View source for Georgia State Route 400

{{Short description|North-south highway in U.S. state of Georgia}}
{{Use American English|date=April 2025}}
{{Use mdy dates|date=May 2025}}
{{Infobox road
|state=GA
|type=SR
|route=400
|alternate_name=T. Harvey Mathis Parkway<br />Turner McDonald Parkway
|map={{maplink-road|from=Georgia State Route 400.map}}
|map_custom=yes 
|map_notes=SR&nbsp;400 highlighted in red
|length_mi=53.7
|length_ref=<ref name="Google">{{Google maps | url = https://www.google.com/maps?hl=en&q=from:+corner+of+I-85/GA-13/GA-403+and+GA-400+@33.825578,+-84.359894+to:+corner+of+US-19/GA-60/GA-115+and+GA-400+@34.468495,+-83.967648 | title = GA-400 |access-date = October 31, 2012 }}</ref>
|length_round=2
|established=1971, 1993
|direction_a=South
|terminus_a={{jct|state=GA|I|85}} in [[Buckhead, Atlanta|Buckhead]]
|junction=
*{{jct|state=GA|I|285|US|19}} in [[Sandy Springs, Georgia|Sandy Springs]]
*{{jct|state=GA|SR|20}} in [[Cumming, Georgia|Cumming]]
*{{jct|state=GA|SR|369}} in Cumming
*{{jct|state=GA|SR|53}} in [[Dawsonville, Georgia|Dawsonville]]
|direction_b=North
|terminus_b={{jct|state=GA|US|19|SR|60|SR|115}} south-southeast of [[Dahlonega, Georgia|Dahlonega]]
|counties=[[Fulton County, Georgia|Fulton]], [[Forsyth County, Georgia|Forsyth]], [[Dawson County, Georgia|Dawson]], [[Lumpkin County, Georgia|Lumpkin]]
|previous_type=SR
|previous_route=388
|next_type=SR
|next_route=401
}}

'''State Route&nbsp;400''' ('''SR&nbsp;400'''; commonly known as '''Georgia&nbsp;400''') is a [[controlled-access highway|freeway]] and [[state highway (US)|state highway]] in the U.S. state of [[Georgia (U.S. state)|Georgia]] serving parts of [[Atlanta metropolitan area|Metro Atlanta]]. It is [[concurrency (road)|concurrent]] with [[U.S. Route 19 in Georgia|U.S. Route&nbsp;19]] (US&nbsp;19) from exit&nbsp;4 ([[Interstate 285 (Georgia)|Interstate&nbsp;285]] [I-285]) until its northern terminus south-southeast of [[Dahlonega, Georgia|Dahlonega]], linking the city of [[Atlanta, Georgia|Atlanta]] to its north-central [[suburb]]s and [[exurb]]s. SR&nbsp;400 travels from the [[Lindbergh, Atlanta|Lindbergh]] neighborhood in the [[Buckhead]] district of Atlanta, at [[Interstate 85 in Georgia|I-85]], to just south-southeast of Dahlonega. Like the [[Interstate Highway]]s, it is a [[limited-access road]] (with interchanges instead of intersections), but unlike the Interstates, the exit numbers are not mileage-based, they are [[Sequential exit numbering|sequential]]. Once SR&nbsp;400 passes exit&nbsp;18 ([[Georgia State Route 369|SR&nbsp;369]]), it changes from a limited-access freeway into an at-grade [[dual carriageway|divided highway]] with traffic lights, but still with a speed limit of {{convert|65|mph|km/h|0}}, and ends at the J.&nbsp;B. Jones Intersection at [[Georgia State Route 60|SR&nbsp;60]]/[[Georgia State Route 115|SR&nbsp;115]] in [[Lumpkin County, Georgia|Lumpkin County]].

Between I-85 and I-285, SR&nbsp;400 is designated "T.&nbsp;Harvey Mathis Parkway", after a local [[land development|land developer]] and road proponent who died the day after being appointed as head of the [[1996 Summer Olympics|Atlanta Committee for the Olympic Games]] in June 1991, when the tollway was under construction. Upon reaching the Perimeter (I-285) and beyond, the highway is designated "Turner McDonald Parkway", after a Fulton County Public Works Department director.

SR&nbsp;400 is one of only two state routes in the 400–499 series to not be designated as an unsigned route following an Interstate; the other is [[Stone Mountain Freeway|SR&nbsp;410]] near Stone Mountain.{{citation needed|date=November 2021}} Both SR&nbsp;400 and&nbsp;SR&nbsp;410 were originally planned as interstate routes: SR&nbsp;400 was supposed to be I-485 and SR&nbsp;410 was supposed to be I-675.

==Route description==
[[File:400S Buckhead Underpass.JPG|thumb|Passing through the [[Atlanta Financial Center]] in Buckhead on SR&nbsp;400 southbound]]
SR&nbsp;400 begins at I-85 just north of Downtown Atlanta. SR&nbsp;400 travels concurrently with [[Metropolitan Atlanta Rapid Transit Authority|MARTA]]'s [[Red Line (MARTA)|Red Line]] between its [[Buckhead station|Buckhead]] and [[Medical Center station (MARTA)|Medical Center]] stops; the Red Line's final stop is at the [[North Springs station|North Springs]] station. SR&nbsp;400 southbound can access the station via Exit 5C, and traffic from the station can enter SR&nbsp;400 northbound.

SR&nbsp;400 goes through a tunnel under the [[Atlanta Financial Center]] in Buckhead, south of SR&nbsp;400's exit&nbsp;2 ([[Georgia State Route 141 Connector (Atlanta)|SR&nbsp;141 Connector]]/Lenox Road). Farther north, SR&nbsp;400 meets I-285, also known as "The Perimeter" or "Atlanta Bypass".

At I-285, SR&nbsp;400 meets with US&nbsp;19. The two travel concurrently until an intersection with SR&nbsp;60 and SR&nbsp;115 in [[Dahlonega, Georgia|Dahlonega]].

North of I-285, SR&nbsp;400 travels through [[Sandy Springs, Georgia|Sandy Springs]], [[Roswell, Georgia|Roswell]], and [[Alpharetta, Georgia|Alpharetta]] in [[Fulton County, Georgia|Fulton County]]. Major junctions include [[Georgia State Route 140|SR&nbsp;140]] (exit&nbsp;7A/7B on SR&nbsp;400 northbound and exit&nbsp;7 on SR&nbsp;400 southbound) and [[Georgia State Route 120|SR&nbsp;120]] (exit&nbsp;10).

From US&nbsp;19 and I-285 in Sandy Springs, [[Georgia State Route 9|SR&nbsp;9]] travels parallel to SR&nbsp;400 to the west until SR&nbsp;9 reaches [[Coal Mountain, Georgia|Coal Mountain]]. In Coal Mountain, SR&nbsp;9 veers northwest away from SR&nbsp;400, but then later turns northeast toward its northern terminus at its intersection at US&nbsp;19 in downtown Dahlonega.

SR&nbsp;400's exit&nbsp;6 at Northridge Road is known as the Mayor Eva Cohn Galambos Memorial Interchange.

From SR&nbsp;400's exit&nbsp;8, Mansell Road, to exit&nbsp;11, Windward Parkway, North Point Parkway travels parallel to the east of SR&nbsp;400. North Point Parkway provides access to [[North Point Mall]].

SR&nbsp;400 enters [[Forsyth County, Georgia|Forsyth County]] at the overpass of McGinnis Ferry Road. In the county, SR&nbsp;400 travels through [[Cumming, Georgia|Cumming]] and Coal Mountain. Major interchanges include [[Georgia State Route 141|SR&nbsp;141]] (exit&nbsp;13), [[Georgia State Route 20|SR&nbsp;20]] (exit&nbsp;14A/14B on SR&nbsp;400 northbound; exit&nbsp;14 on SR&nbsp;400 southbound), [[Georgia State Route 306|SR&nbsp;306]] (exit&nbsp;17), and [[Georgia State Route 369|SR&nbsp;369]] (exit&nbsp;18). SR&nbsp;400's limited-access portion ends at SR&nbsp;369, and SR&nbsp;400 continues on.

Travelers can access Bald Ridge Marina and boat ramps for [[Lake Lanier]] via exits&nbsp;15 (Bald Ridge Marina Road) and 16 (Pilgrim Mill Road).

North of SR&nbsp;400's intersection with Jot Em Down Road, SR&nbsp;400 continues into [[Dawson County, Georgia|Dawson County]], where it travels through [[Dawsonville, Georgia|Dawsonville]]. Major intersections include [[Georgia State Route 53|SR&nbsp;53]] and [[Georgia State Route 136|SR&nbsp;136]].

At the intersection of SR&nbsp;400 and SR&nbsp;53, a [[continuous-flow intersection]] was completed in May 2017.<ref>{{Cite web |url = http://accesswdun.com/article/2017/5/536295/go-with-the-flow-continuous-flow-intersection-opens-monday-night-in-dawson-co |title = New type of intersection opens Monday night in Dawson Co. |website = AccessWDUN |language = en |access-date = August 8, 2019 }}</ref> Near this intersection is the entrance to North Georgia Premium Outlets.

SR&nbsp;400 continues into [[Lumpkin County, Georgia|Lumpkin County]] just south of its intersection with Whelchel Road and Wilson Drive. After traveling {{convert|3.7|mi|km}} in the county, SR&nbsp;400 and US&nbsp;19 meet SR&nbsp;115 from the north and SR&nbsp;60 from the east. SR&nbsp;400 ends at this point, and US&nbsp;19 turns left and continues north through downtown Dahlonega into the [[Appalachian Mountains]] and the [[Chattahoochee–Oconee National Forest]].

All of SR&nbsp;400 south of the Dawson–Lumpkin county line is included as part of the [[National Highway System (United States)|National Highway System]], a system of roadways important to the nation's economy, defense, and mobility.<ref name="NHS Atlanta">{{cite map |title = National Highway System: Atlanta, GA |date = May 9, 2019 |url = https://www.fhwa.dot.gov/planning/national_highway_system/nhs_maps/georgia/atlanta_ga.pdf |publisher = [[Federal Highway Administration]] |format = PDF |access-date = August 9, 2019 }}</ref><ref name="NHS Georgia">{{cite map |title = National Highway System: Georgia |date = May 8, 2019 |url = https://www.fhwa.dot.gov/planning/national_highway_system/nhs_maps/georgia/ga_georgia.pdf |publisher = Federal Highway Administration |format = PDF |access-date = August 9, 2019 }}</ref>

Exits on the controlled-access part of SR&nbsp;400 are numbered according to the consecutive numbering system instead of reference post (i.e. mile-based) numbering. This is unlike the Interstate Highways in Georgia, which have used reference post numbering since 2000, with the exception of I-24, which continues the exit numbering from Tennessee as the Interstate Highway crosses through Georgia back into Tennessee. This means that exit numbers on SR&nbsp;400 start at 1 and use consecutive numbers (2, 3, 4, etc.) regardless of the nearest mile marker.

At the southern terminus, new ramps connecting SR&nbsp;400 south to I-85 north and I-85 south to SR&nbsp;400 north opened on April 2, 2014.<ref>{{cite web |url = http://www.ajc.com/news/flyover-ramp-connecting-400-opens/FR8X2kUH75GrLephv2V3CN/#14 |title = Flyover ramp connecting Ga. 400 to I-85 opens |publisher = [[The Atlanta Journal-Constitution]] |date = April 2, 2014 |access-date = March 31, 2017 }}</ref> The project was two years in the making and was paid for with funds from the SR&nbsp;400 toll plaza. Prior, drivers had to exit off SR&nbsp;400 onto Sidney Marcus Boulevard to get to I-85 north. On I-85 south, drivers had to take the Cheshire Bride Road/Lenox Road exit to get to Sidney Marcus Boulevard for access onto SR&nbsp;400 north. The ramp from I-85 south is shared with the [[Georgia State Route 13|SR&nbsp;13]] ramp (exit 86). From SR&nbsp;400, Sidney Marcus Boulevard is now exit 1B and the ramp to I-85 north is 1A.

In Forsyth County in 2017–2018, SR&nbsp;400 was expanded from two lanes in each direction to three from McFarland Parkway to SR&nbsp;369 (which is planned to be exit 18).

==History==
[[File:Atl july 001.JPG|thumb|Southbound lanes of 400 north of Pitts Road overpass, 2007]]
Planning for the freeway, later known as the '''North Fulton Expressway''' and the  '''Appalachian Developmental Highway''', began in 1954.<ref name="Original">{{cite web |url = http://www.roswellgov.com/documentcenter/view/361 |archive-url = https://web.archive.org/web/20150924092131/http://www.roswellgov.com/documentcenter/view/361 |url-status = dead |archive-date = September 24, 2015 |title = Historic Preservation Element |date = November 7, 2005 |format = PDF |access-date = September 14, 2013 }}</ref> The initial section north of I-285 was officially dedicated on May&nbsp;24, 1971<ref name="Roswell">{{cite book |editor1-first = Darlene M. |editor1-last = Walsh |title = Roswell: A Pictorial History |edition = 2nd |year = 1994 |isbn = 0-9615854-2-0 |page = 150 }}</ref> and subsequent additions to the north opened in stages through 1981.

Initial development was led by Fulton County Public Works Department director Turner McDonald, who worked for the county from 1947 until retiring in 1980. In January 1974, the [[Georgia General Assembly]] named a stretch of the highway—from I-285 to the Fulton-Forsyth county line—after McDonald. At the end of that year, on December&nbsp;23, McDonald attended a ceremony officially dedicating the segment between Union Hill Road and SR&nbsp;20 as Turner McDonald Parkway.<ref name="afg-ajc-400">{{cite news |last1 = Johnston |first1 = Andy |title = Actual Factual Georgia |url = https://www.ajc.com/news/actual-factual-georgia/fa8fSzm6wzyxz62sYltmNP/ |access-date = August 18, 2024 |work = [[The Atlanta Journal-Constitution]] |date = March 24, 2014 }}</ref>

The road was widened in the late 1980s from its original four-lane configuration to eight lanes between I-285 and [[historic bridges of the Atlanta area#Holcomb Bridge|Holcomb Bridge]] Road, and to six lanes between Holcomb Bridge Road and Haynes Bridge Road. The widening projects were brought on by the massive [[suburbanization|growth]] that the freeway brought to northern Fulton and southern Forsyth counties. In 2005 the [[Georgia Department of Transportation]] (GDOT) began widening the section from Holcomb Bridge Road to McFarland Parkway from six to eight lanes. In addition, metal [[noise barrier]] walls and a [[Jersey barrier|concrete divider]] in the median were also added. In 2010, a [[half-diamond interchange]] (exit 4C) was added on the north side of Hammond Drive, allowing southbound exits and northbound entrances.

The northern portion of the inside-the-Perimeter route remained alive following the freeway revolts, and after [[lawsuit]]s by residents that spent several years in court, GDOT was able to force the extension through Buckhead. Dozens of homes were taken through [[eminent domain]] or the threat of it, and the highway was built through the middle of formerly-secluded and forested neighborhoods. Some remaining residents live on [[cul-de-sac|dead end]] streets with metal barrier walls. During planning stages of the highway in 1984, the [[SunTrust Bank|Robinson-Humphrey Bank Company]] proposed a massive expansion of its office building in Buckhead, now known as the [[Atlanta Financial Center]], which was to be built directly in the proposed routing of the highway. A compromise was worked out for [[Fulton County, Georgia|Fulton County]] to pay $3&nbsp;million to Robinson-Humphrey to offset extra construction costs. This allowed the new tower to be constructed with special concrete supports allowing for the highway and eventual MARTA [[Red Line (MARTA)|Red Line]] to run underneath; the deal also covered Robinson-Humphrey's $1 million donation of the right-of-way to the [[Georgia Department of Transportation|Georgia DOT]].<ref>{{cite web |url = http://digitalcollections.library.gsu.edu/cdm/ref/collection/atlphotos/id/2557 |title = Ga. 400 digs in at high-rise |author = Beasley, David |work = Atlanta Journal-Constitution |date = May 13, 1990 |access-date = February 22, 2017 }}</ref> Construction of the massive tunnel underneath the office complex and its parking garage was underway in 1990; the tunnel was sealed off with concrete to protect the building from noise and vibration. The original plans for the North Tollway put interchanges at Marion Road (now [[Sidney Marcus]] Boulevard), Peachtree Road at North Stratford Road, Wieuca Road, Windsor Parkway, and Johnston Ferry Road.<ref>{{cite web |last1 = Hill |first1 = Eric |title = North Atlanta Tollway - Community Impact Studies |url = https://digitalcollections.library.gsu.edu/digital/collection/PlanATL/id/49956/rec/15 |publisher = [[Georgia Department of Transportation]] |access-date = January 9, 2023 |pages = 33–37 |date = 1972 }}</ref> By 1972, plans had been adjusted to exclude the Wieuca Road exit and add an expressway connecting Andrews Road at Roswell Road to Peachtree Road at Lenox Road as an alternative to a direct interchange with Peachtree Road.<ref>{{cite web |title = North Atlanta Tollway - Environmental Impact Analysis |url = https://digitalcollections.library.gsu.edu/digital/collection/PlanATL/id/52736/rec/1 |publisher = [[Georgia Department of Transportation]] |access-date = January 9, 2023 |page = 28 |date = 1972 }}</ref> The mainline toll booth would have been south of Peachtree Road.<ref>{{cite web |title = Proposed Atlanta urban area tollways |url = https://digitalcollections.library.gsu.edu/digital/collection/PlanATL/id/44033/rec/40 |access-date = January 9, 2023 |page = 24 |date = 1974 }}</ref> By 1986, the present alignment with only 3 exits (Marion Road, Buckhead Loop/Lenox Road, and Glenridge Connector) and a single tollbooth north of Peachtree Road were finalized, eliminating direct access to both Peachtree Road and the residential Buckhead neighborhoods.<ref>{{cite web |title = Draft environmental impact statement: project: the North Atlanta Parkway |url = https://digitalcollections.library.gsu.edu/digital/collection/PlanATL/id/45392/rec/12 |access-date = January 9, 2023 |pages = 17–18 |date = 1986 }}</ref> [[Atlanta City Council]] member [[Buddy Fowlkes]] was opposed to the extension of GA&nbsp;400; "I'm encouraged," he said in 1989. "People are starting to understand that there are alternatives to the Georgia 400 extension."<ref name="ac-netwon-400-89">{{cite news |last1 = Newton |first1 = Jim |title = Aides to Mayor Fail To Round Up Votes Needed for Ga. 400 |work = The Atlanta Constitution |date = April 18, 1989 }}</ref> In 1991, the State Road and Tollway Authority authorized $96&nbsp;million in bonds to pay for the GA&nbsp;400 Buckhead extension which would be paid back by 2011 with toll revenue.<ref>{{cite news |last1 = Simmons |first1 = Andria |title = GA. 400 TIMELINE |url = https://www.ajc.com/news/transportation/400-tolls-end-friday/w7SpiPdt8x1GR9BsQ8vFPP/ |access-date = January 9, 2023 |publisher = [[Atlanta Journal-Constitution]] |date = November 21, 2013 }}</ref> 
The road opened to traffic on August&nbsp;1, 1993, after three years of construction.<ref>{{cite news |last1 = Newton |first1 = Jonathan |title = Ga. 400 toll booths through the years |url = https://www.ajc.com/news/local/photos-400-toll-booths-through-the-years/xYphHfgN8XjOIGTgyQ5CtM/ |publisher = [[Atlanta Journal-Constitution]] |date = August 2, 1993 }}</ref> Existing exits were renumbered up by four to accommodate the extension{{Citation needed|reason=No evidence for exit renumbering|date=January 2023}}, which had a single [[toll plaza]] in the middle of its length when opened.

[[File:GA 400 northern terminus in Lumpkin County, April 2017.jpg|thumb|SR&nbsp;400's northern terminus in [[Lumpkin County, Georgia|Lumpkin County]]]]In addition, the North Line (now Red Line) for Atlanta's [[Metropolitan Atlanta Rapid Transit Authority|MARTA]] train system was constructed in the [[road median|median]] from the Glenridge Connector to south of Lenox Road, and was opened on June&nbsp;8, 1996, extending the line from [[Lenox Square]] mall north to [[Perimeter Mall]], and connecting the [[Perimeter Center]] area to the rail system. That [[edge city]] largely developed due to its proximity to the 400/285 interchange.
[[File:US19nGA400nRoadSigns (32561639480).jpg|left|thumb|SR&nbsp;400 with the north Georgia mountains in the distance]]
Direct access from SR&nbsp;400 southbound to I-85 northbound (and the reverse direction) opened in April 2014, ending the need to take the indirect route via Sidney Marcus Boulevard. In June 2015, a ceremony was held to name the [[Overpass|flyover]] bridges for Captain Herb Emory, a beloved local [[traffic report]]er for [[WSB (AM)|WSB]] AM and [[WSB-TV]] (as well as other [[duopoly (broadcasting)|co-owned station]]s) who had died in April 2014.<ref>{{cite web |url = http://www.wsbtv.com/news/local/ga-400-flyover-renamed-capt-herb-emory/33427589 |title = GA-400 flyover named for Capt. Herb Emory |date = July 22, 2015 |publisher = WSB-TV |access-date = March 31, 2017 }}</ref> At one time, SR&nbsp;400 was to connect to [[Interstate 675 (Georgia)|I-675]] in southeast [[DeKalb County, Georgia|DeKalb]] county. However, residents in [[intown Atlanta]] neighborhoods did not want the highway to cut through and partially destroy their neighborhoods (as had occurred in [[Sweet Auburn]] and other neighborhoods), and a [[freeway revolt]] ensued, ending when then-Governor [[Jimmy Carter]] signed a new [[city charter]] and the [[USDOT]] rejected the [[environmental impact statement|highway studies]] in 1973, and [[George Busbee]] had the plan officially terminated when he became governor in 1975. The point where this road would have had its interchange with the also-doomed [[Interstate 485 (Georgia)|I-485]] (now [[Freedom Parkway]] and [[Georgia State Route 10|SR&nbsp;10]] to [[Stone Mountain Freeway]]) is now the site of the [[Jimmy Carter Library and Museum]]. A later routing of I-485 would have had that number running from the Downtown Connector east to the current library, then north on what is now SR&nbsp;400. A revival of the connection to I-675 was proposed in 2009. A [[tunnel]] would go under [[East Atlanta]] and other [[neighborhoods in Atlanta]] on the DeKalb-county side, south to [[Interstate 20 in Georgia|I-20]]. A surface road through less-developed land would then go south to I-675. The project would be a [[public–private partnership|public/private initiative]]. As of September 2024, the project is not on the GDOT's Major Mobility Investment Program List<ref>{{Cite web |date = April 22, 2019 |title = Home |url = https://majormobilityga.com/ |access-date = September 20, 2024 |language = en-US }}</ref>

Funding for a project to create a new interchange on SR&nbsp;400 at SR&nbsp;369/Browns Bridge Rd came from the Forsyth County Transportation Bond, approved by voters in 2014, along with GDOT funding.<ref>{{Cite web |date = July 15, 2019 |title = Preliminary Widening Work To Begin At Ga. 369, 400 Interchange |url = https://patch.com/georgia/cumming/preliminary-widening-work-begin-ga-369-400-interchange |access-date = August 8, 2019 |website = Cumming, GA Patch |language = en }}</ref> Previously, SR&nbsp;400 met SR&nbsp;369 at a signalized intersection, where the freeway part of SR&nbsp;400 ended. Plans showed that a partial cloverleaf interchange would be built, with ramps from both directions of SR&nbsp;400 meeting SR&nbsp;369 at traffic lights; the northbound SR&nbsp;400 ramp would also meet at the entrance of Browns Bridge Church. Also as a part of this project, SR&nbsp;369 will be widened from its intersection with SR&nbsp;9, through the interchange at SR&nbsp;400, to its intersection at SR&nbsp;306.<ref>{{Citation |last = walker |first = brandon |title = GA 400/GA 369 Interchange Project-Forsyth County |date = August 16, 2018 |url = https://www.flickr.com/photos/125122378@N05/43354156564/ |access-date = August 8, 2019 }}</ref> The widening project is currently still underway as of 2023. Workers cleared the area and removed underground storage tanks, per county officials.<ref>{{Cite news |last = David Ibata |first = For the AJC |title = Forsyth soon to start Ga. 369/400 interchange project |language = en |newspaper = The Atlanta Journal-Constitution |url = https://www.ajc.com/news/local/forsyth-soon-start-369-400-interchange-project/nePMVJazQZF1tN9uxb3rUN/ |access-date = August 8, 2019 }}</ref> Forsyth County acquired four properties as part of right-of-way acquisition and is expected to go out for bid in the fall of 2019; a bid is expected to be awarded in early 2020.<ref>{{Cite web |title = Work set to begin at Hwy. 369, Ga. 400 interchange |url = https://www.forsythnews.com/local/work-set-begin-hwy-369-ga-400-interchange/ |access-date = August 8, 2019 |website = www.forsythnews.com }}</ref> Construction began in late 2020 and the interchange opened in early 2023.<ref>{{Cite web |title=Forsyth County Government News {{!}} Learn More About the NEW Exit 18 at SR&nbsp;369/400, See Traffic Impacts |url=https://www.forsythco.com/News/sr-369-browns-bridge-overpass-opens-overnight-april-3 |access-date=May 13, 2023 |website=www.forsythco.com |language=en-US}}</ref>

==Tolls==
[[File:Atl july 005.JPG|thumb|Former Toll booth on southbound Georgia 400]]
When SR&nbsp;400 was a toll road, the toll plaza, operated by the State Road and Tollway Authority (SR&nbsp;TA), collected 50¢ tolls in both the northbound and southbound directions.  The toll plaza was located north of Lenox Road (exit 2). Each direction had two open-road toll lanes, which collected tolls at highway speeds using the Georgia Peach Pass [[electronic toll collection|electronic tag]] (formerly "Cruise Card"), and seven gated toll lanes that accepted cash. The toll facility handled a total of approximately 120,000 vehicles per day. About 37% of transactions were paid via [[Peach Pass]], the same technology also used by [[SunPass]] in Florida, [[North Carolina Quick Pass|Quick Pass]] in North Carolina, [[TxTag]] in Texas, and [[PikePass]] in [[Oklahoma]]. Peach Pass can be used interchangeably with the Florida and North Carolina systems and passes, but not with TxTag and PikePass, due to a lack of reciprocal billing arrangements with those non-adjacent states.

SR&nbsp;400 was the only active [[toll road]] in Georgia, after the [[F.J. Torras Causeway|Torras Causeway]] toll between [[Brunswick, Georgia|Brunswick]] and [[St. Simons Island]] on the southeastern Georgia coast was removed in 2003,<ref name="Governor">{{cite press release |title = Governor Perdue and Georgia DOT Announce Elimination of Torras Causeway Toll |date = September 12, 2003 |url = http://sonnyperdue.georgia.gov/00/press/detail/0,2668,78006749_91290006_91680929,00.html |archive-url = https://web.archive.org/web/20131015030433/http://sonnyperdue.georgia.gov/00/press/detail/0,2668,78006749_91290006_91680929,00.html |url-status = dead |archive-date = October 15, 2013 |access-date = September 14, 2013 }}</ref> until the [[High occupancy/toll and express toll lanes|high occupancy toll express lanes]] opened on I-85 in 2011. The SR&nbsp;400 toll was to expire in 2011 after 20 years. In March 2009, local TV news reports brought up an issue regarding tolls on the road, since SRTA reported that enough money has been collected to pay the [[municipal bond|bond]]s used to construct the road (though [[prepayment of loan|prepayment]] prior to 2011 was prohibited).  Despite promises that the toll would be removed once the road was paid for, the tolls continued to be collected.  The road costs $2 million per year just to maintain (plus occasional [[repaving]]), and it cost several million more for the [[demolition]] of the toll plaza. (One option would have been to simply close the toll plaza, allowing drivers to pass through without paying.) On September 24, 2010, then Governor [[Sonny Perdue]] and members of the [[State Road and Tollway Authority]] (SRTA) voted to keep the tolls on until 2020 in order to fund 11 new projects on the highway.<ref name="TollsRemain">{{cite news |date = September 24, 2010 |title = Ga. 400 Toll Will Remain Until 2020 |publisher = [[WSB-TV]] |location = Atlanta, GA |url = http://www.wsbtv.com/news/ga-400-toll-will-remain-until-2020/241820394 |access-date = September 14, 2013 }}</ref>

In July 2012, two weeks before voters of Georgia voted on the Transportation Referendum act, Governor Deal said that the toll on SR&nbsp;400 would be abandoned in November 2013, meaning that, at the beginning of 2014, SR&nbsp;400 would be a toll-free road.<ref>{{cite news |date = July 19, 2012 |title = Governor to remove Ga. 400 toll barriers |publisher = WSB-TV |location = Atlanta, GA |url = http://www.wsbtv.com/news/local/governor-remove-ga-400-toll-barriers/242138330 |access-date = July 19, 2012 }}</ref><ref>{{Cite news |last = Simmons |first = Andria |date = November 21, 2013 |title = Ga. 400 tolls end Friday |language = English |work = The Atlanta Journal-Constitution |url = https://www.ajc.com/news/transportation/400-tolls-end-friday/w7SpiPdt8x1GR9BsQ8vFPP/ |access-date = September 2, 2022 |issn = 1539-7459 }}</ref> Tolling was discontinued on November 22, 2013, at 11:08 am; the last toll was collected by Governor [[Nathan Deal]] and was paid by the same couple that paid the first toll in 1993. The toll plaza was removed in a four-phase demolition project.<ref>{{cite news |last = Parrish |first = Sandra |title = Deal fulfills promise to end tolls on GA 400 |url = http://www.wsbradio.com/news/deal-fulfills-promise-end-tolls-400/K4mkBzzloZQ1uDJNi3hfLP/ |access-date = November 22, 2013 |newspaper = WSB Radio |date = November 22, 2013 }}</ref>

In 2012, a feasibility study was initiated by the Georgia Department of Transportation to explore the possibility of adding tolled express lanes.<ref>{{cite web |title = GA 400 Express Lanes |url = http://www.dot.ga.gov/travelingingeorgia/expresslanes/ga400/Pages/default.aspx |publisher = Georgia Department of Transportation |access-date = September 14, 2013 |url-status = dead |archive-url = https://web.archive.org/web/20130907163525/http://www.dot.ga.gov/travelingingeorgia/expresslanes/ga400/Pages/default.aspx |archive-date = September 7, 2013 }}</ref> The proposed express lanes would be {{convert|24|mi|km}} long, and mirror the existing lanes on [[Interstate 85 in Georgia#Express lanes|I-85]]. The lanes' southern terminus will be I-285 in [[Sandy Springs, Georgia|Sandy Springs]], and their northern terminus would be [[Georgia State Route 20|SR&nbsp;20]] in [[Cumming, Georgia|Cumming]]. Fees would be similar to the existing I-85 lanes, and will be paid using Peach Pass, making the express lanes compatible with the existing express lanes on I-85 (as well as the former toll plaza in Buckhead if it had remained in operation).

== Future ==

=== McGinnis Ferry Road interchange ===
A traffic study in 2007 explored the possibility of a new interchange on SR&nbsp;400 at McGinnis Ferry Road; this interchange feasibility report was approved by GDOT in 2010 and Forsyth County in 2012.<ref name=":0">{{Cite web |url = https://www.northfulton.com/news/construction-of-ga-at-mcginnis-ferry-interchange-to-begin-next/article_b27680b2-037d-5aca-9a8c-d695738e5dde.html |title = Construction of Ga. 400 at McGinnis Ferry interchange to begin next year |last = Sturgeon |first = Kathleen |website = Appen Media Group |language = en |access-date = August 8, 2019 }}</ref> The exit is to be located between exit 11 (Windward Parkway) and exit 12 (McFarland Parkway). Construction started in October 2021, and is expected to be completed in 2023.<ref>{{Cite web|url=https://www.forsythnews.com/news/transportation/clearing-begins-interchange-project-ga-400-mcginnis-ferry/|title=Clearing begins for interchange project at GA 400, McGinnis Ferry {{!}} Projects {{!}} McGinnis Ferry Interchange|website=nfcid-final|language=en|access-date=August 8, 2019}}</ref> Construction will be completed by Forsyth County and GDOT. As a part of the project, one lane each way will be added on SR&nbsp;400 between the Windward Parkway exit and the McFarland Parkway exit, and southbound SR&nbsp;400  will have an additional lane added between McFarland Parkway and McGinnis Ferry Road. Also, as part of the construction:<ref name=":0" /><ref>{{Cite web |url = https://www.forsythnews.com/local/plans-shown-for-new-ga-400-interchange-at-mcginnis-ferry-road/ |title = Plans shown for new Ga. 400 interchange at McGinnis Ferry Road |website = www.forsythnews.com |access-date = August 8, 2019 }}</ref>

* The McGinnis Ferry Road bridge over SR&nbsp;400 is already replaced and operational, but the ramps to SR&nbsp;400 are expected to complete in 2026.
* McGinnis Ferry Road will be widened to four lanes from Bethany Bend to the SR&nbsp;400 intersection, and to six lanes from the SR&nbsp;400 interchange to the intersection of McGinnis Ferry Road, Union Hill Road, and Ronald Reagan Boulevard. Ronald Reagan Boulevard will also be widened to six lanes from McGinnis Ferry Road to Counselors Way.
* Sidewalks will be added on the southbound side of McGinnis Ferry Road, and a multi-use path will be added on the northbound side of McGinnis Ferry Road. 
* Additional right and left turn lanes will be added on McGinnis Ferry Rd at major intersections.

This project complements construction to extend Ronald Reagan Boulevard from McFarland Parkway to Majors Road.<ref>{{Cite web |url = https://patch.com/georgia/cumming/new-road-be-alternative-sr-400-mcginnis-ferry-sr-20 |title = New Road To Be Alternative To SR&nbsp;400 From McGinnis Ferry To SR&nbsp;20 |date = July 9, 2018 |website = Cumming, GA Patch |language = en |access-date = August 8, 2019 }}</ref>

=== I-285 Interchange ===
GDOT, working with North Perimeter Contractors, began construction in February 2017 at the SR&nbsp;400/I-285 interchange to add collector-distributor lanes and flyover ramps to ease congestion at the interchange.<ref name=":1">{{Cite web |url = http://www.dot.ga.gov/BuildSmart/Projects/Pages/I285SR400.aspx |title = I 285 SR&nbsp;400 Improvements |website = www.dot.ga.gov |access-date = August 8, 2019 |archive-date = December 22, 2019 |archive-url = https://web.archive.org/web/20191222011617/http://www.dot.ga.gov/buildsmart/projects/pages/i285sr400.aspx |url-status = dead }}</ref><ref name=":2">[https://perimeterconnects.com/wp-content/uploads/I285-SR400Improvements-FAQs.pdf Improvements] perimeterconnects.com</ref> The interchange currently sees 420,000 drivers each day, despite that the current interchange was designed to accommodate 100,000 drivers daily.<ref name=":3">{{Cite news |url = https://www.ajc.com/news/state--regional-govt--politics/extra-work-delays-285-400-interchange-project/6E4kWhXnyVIpixWImcyXeK/ |title = Extra work delays I-285/Ga. 400 interchange project |last = David Wickert |first = The Atlanta Journal-Constitution |newspaper = The Atlanta Journal-Constitution |language = en |access-date = August 8, 2019 }}</ref> The project is expected to cost $800 million and is estimated to save drivers on SR&nbsp;400 and I-285 a combined 20,000 hours of driving time each day.<ref name=":4">{{Cite web|url=https://perimeterconnects.com/285at400/|title=285 at 400 {{!}} Perimeter Connects|language=en-US|access-date=March 16, 2021}}</ref> The project will also include:<ref name=":1" /><ref name=":2" /><ref name=":3" />
* The conversion of the SR&nbsp;400 and Abernathy Rd (exit 5) to a diverging diamond interchange.
* The reconstruction of the Mount Vernon Highway bridge over SR&nbsp;400, the Peachtree Dunwoody Rd bridge over I-285, and the Glenridge Dr bridge over I-285.
* The construction of multi-use paths along the southeastern portion of SR&nbsp;400 and I-285, and path improvements along Mount Vernon Highway and Abernathy Road. These improvements will also connect to Path 400.<ref>[https://path400greenway.org/ Path 400 webpage]</ref>

Construction was originally expected to be completed by 2020, but due to discovering unmarked utility lines, and labor shortages & supply-chain problems as a result of the [[COVID-19 pandemic in the United States|COVID-19 pandemic]], will now continue into {{Currentyear}}.<ref>{{Cite web |last = Wickert |first = David |title = Work on I-285 interchange at Ga. 400 to continue into 2024 |url = https://www.ajc.com/news/commuting-blog/work-on-i-285-interchange-at-ga-400-to-continue-into-2024/GYU2XY4ABJHZZLHTGDJQBPA4GU/ |access-date = August 16, 2023 |website = Commuting Blog (The Atlanta Journal-Constitution) }}</ref>

=== SR&nbsp;400 Express Lanes ===
[[File:US19nGA400nRoadSigns-MM4 (42118271701).jpg|thumb|SR&nbsp;400 North at [[North Springs station]] in 2012 before the I-285 interchange reconstruction and Express Lanes project]]
GDOT is currently conducting environmental studies to study the impact of new express toll lanes each way on SR&nbsp;400, starting at the North Springs [[Metropolitan Atlanta Rapid Transit Authority|MARTA]] station and traveling 16 miles along SR&nbsp;400 to the McFarland Parkway exit (exit 12).<ref name=":5">{{Cite web |url = http://www.dot.ga.gov/DS/GEL/SR400 |title = SR&nbsp;400 Express Lanes |website = www.dot.ga.gov |access-date = August 8, 2019 |archive-date = August 8, 2019 |archive-url = https://web.archive.org/web/20190808175804/http://www.dot.ga.gov/DS/GEL/SR400 |url-status = dead }}</ref> The express lanes, for which drivers will need a Peach Pass to travel on, will be two buffer-separated lanes each way from the North Springs MARTA station to McGinnis Ferry Rd and one buffer-separated lane each way from McGinnis Ferry Rd to McFarland Parkway.<ref name=":6">{{Cite web |url = https://atlanta.curbed.com/2019/4/17/18411608/ga-highway-400-express-lanes-traffic-peach-pass |title = The billion-dollar Ga. Highway 400 express lanes project: What you need to know |last = Warren |first = Karon |date = April 17, 2019 |website = Curbed Atlanta |access-date = August 8, 2019 }}</ref> The express lanes will use '[[dynamic pricing]],' so drivers will pay higher prices during rush hour; but, transit buses and registered vanpools will not have to pay additional fees to use these lanes.<ref name=":7">{{Cite web |url = https://www.alpharetta.ga.us/government/departments/public-works/ga-400-express-lanes-project |title = GA 400 Express Lanes Project |website = www.alpharetta.ga.us |access-date = August 8, 2019 }}</ref> In addition, a bus rapid transit system, Georgia's first, will run along the express lanes; the system will possibly include bus access to stops at or near the North Spring MARTA station, Holcomb Bridge Road, [[North Point Mall]], Old Milton Parkway, and an existing MARTA park and ride at Windward Parkway.<ref name=":7" /> The local SR&nbsp;400 lanes and the express lanes are expected to have direct merges around Northridge Road (exit 6), Haynes Bridge Rd (exit 9) and at its terminus at McFarland Parkway; expected direct access ramps will be located at the North Springs MARTA station, Holcomb Bridge Road (exit 7), Webb Bridge Road, and Union Hill Road.<ref name=":5" />

Construction was to begin in 2021, but due to increased costs (which exceeded GDOT's $1.7 billion budget) had to be delayed.<ref>{{Cite news |last = Wickert |first = David |title = Construction of Ga. 400 toll lanes may be delayed again |language = English |work = The Atlanta Journal-Constitution |url = https://www.ajc.com/politics/construction-of-ga-400-toll-lanes-may-be-delayed-again/VSDUYMYXWFBYBCPLY6U4JK6N54/ |access-date = August 16, 2023 |issn = 1539-7459 }}</ref> A new developer is expected to be announced in early 2024, construction to begin in 2025, and substantial completion to take place in 2031.<ref>{{Cite web |title = SR&nbsp;400 Express Lanes |url = https://0001757-gdot.hub.arcgis.com/ |access-date = August 16, 2023 |website = 0001757-gdot.hub.arcgis.com |language = en-us }}</ref> As a part of the project, GDOT has said that they might be acquiring around 50 homes near the North Springs MARTA station, as well as small pieces of land along SR&nbsp;400 north of Sandy Springs.<ref name=":8">{{Cite web |url = https://www.mdjonline.com/neighbor_newspapers/gdot-s-matthews-project-designed-to-minimize-impact-on-residents/article_2497a740-453b-11e9-9b8f-abd831fd6ed1.html |title = GDOT's Matthews: 400 project designed to minimize impact on residents |last = Catts @NeighborEverett |first = Everett |website = MDJOnline.com |language = en |access-date = August 8, 2019 }}</ref>

In November 2024, the state of Georgia signed a contract with private firm SR&nbsp;400 Peach Partners to revamp {{convert|16|mi|km}} of SR&nbsp;400 north of I-285, and then operate the express lanes as a private tollway for 50 years. Construction is expected to start in late 2025, and substantial completion is anticipated in 2031.<ref>{{cite web |title = SR&nbsp;400 Express Lanes |url = https://0001757-gdot.hub.arcgis.com/ |publisher = Georgia DOT }}</ref><ref>{{cite web |title = Why Atlanta Is Putting $4B Into One Road |url = https://www.youtube.com/watch?v=OCUv0yqSeCg |publisher = Build Core }}</ref>

==== Expansion of SR&nbsp;400 Express Lanes to I-285 ====
GDOT is also working on environmental studies for express lanes along the top end of I-285, from Paces Ferry Rd to Henderson Rd, with construction slated to start in 2023 and finish in 2029.<ref>{{Cite web |url = http://www.dot.ga.gov/DS/GEL/I285TopEnd |title = I285TopEnd |website = www.dot.ga.gov |access-date = August 8, 2019 |archive-date = August 8, 2019 |archive-url = https://web.archive.org/web/20190808175807/http://www.dot.ga.gov/DS/GEL/I285TopEnd |url-status = dead }}</ref> Once this project is complete, GDOT will add express lanes along SR&nbsp;400 from the North Springs MARTA station south to meet with the I-285 express lanes once they are completed.<ref name=":8" />

==Filming==
Several scenes from the movie ''[[Smokey and the Bandit]]'' were filmed on SR&nbsp;400, which was used due to the low traffic volumes at the time of filming during its construction. The "[[Alabama]]" [[police chase]], where a Georgia State Patrol car chases Bandit, who is driving a [[Pontiac Firebird Trans Am|Trans-Am]], takes place on SR&nbsp;400 at the interchange with SR&nbsp;141/Peachtree Parkway, Exit 13.<ref>{{Cite web |url = http://georgiaroadgeek.blogspot.com/2006/03/ga-400-was-movie-star.html |title = The Georgia Road Geek: GA 400 Was A Movie Star |last = Geek |first = Georgia Road |date = March 2, 2006 |website = The Georgia Road Geek |access-date = August 8, 2019 }}</ref> In addition, other film scenes were shot along SR&nbsp;400 between McFarland Parkway in Alpharetta (Exit 12) and SR&nbsp;20/Buford Highway in Cumming (Exit 14).<ref>{{Cite web |url = http://www.atlantatimemachine.com/smokey/44.htm |title = Georgia 400 looking south between Ga. Hwy 20 and Ga. Hwy 141 |website = www.atlantatimemachine.com |access-date = August 8, 2019 }}</ref>  Filming also took place in other parts of metro Atlanta, including [[McDonough, Georgia|McDonough]] and [[Jonesboro, Georgia|Jonesboro]].<ref>{{Cite web |url = https://horsepowermemories.com/2017/06/16/smokey-and-the-bandit-filming-locations-a-40-year-now-and-then-look-back/ |title = Smokey and the Bandit Filming Locations: A 40-Year Now and Then Look Back |last = horsepowermemories |date = June 16, 2017 |website = Horsepower Memories |language = en |access-date = August 8, 2019 }}</ref>

==Exit list==
{{Jcttop|exit|state=GA|length_ref=<ref name="Google"/>}}
{{GAint|exit
|county=Fulton
|cspan=15
|location=Atlanta
|lspan=4
|mile=0.0
|exit=1A
|road={{Jct|state=GA|I|85|name1=[[Georgia State Route 403|SR&nbsp;403]]|location1=[[Downtown Atlanta]]|location2=[[Hartsfield-Jackson Atlanta International Airport|Atlanta Airport]]|extra=airport|location3=[[Greenville, South Carolina|Greenville]]}}
|notes=Southern terminus
}}
{{GAint|exit
|type=incomplete
|mile=0.6
|exit=1B
|road=Sidney Marcus Boulevard
|notes=Southbound exit and northbound entrance only; to [[Lindbergh Center station]]
}}
{{GAint|exit
|mile=2.8
|exit=2
|road={{jct|state=GA|SR-Conn|141|dab1=Atlanta|name1=Lenox Road|city1=Buckhead|location1=[[Buckhead]]}}
|notes=[[Single-point urban interchange]]
}}
{{GAint|exit
|type=closed
|mile=4.1
|place=Toll plaza (demolished 2014)
}}
{{GAint|exit
|location=Sandy Springs
|lspan=6
|mile=6.6
|exit=3
|road=Glenridge Connector
|notes=Northbound exit via exit 4A; former [[Georgia State Route 407 Loop|SR&nbsp;407 Loop]]
}}
{{GAint|exit
|mile=6.8
|type=concur
|exit=4
|road={{jct|state=GA|I|285|US|19|name1=Atlanta Bypass / [[Georgia State Route 407|SR&nbsp;407]]|dir2=south|location1=[[Greenville, South Carolina|Greenville]]|city2=Augusta|location3=[[Chattanooga, Tennessee|Chattanooga]]|location4=[[Birmingham, Alabama|Birmingham]]}}
|notes=Southern end of US&nbsp;19 concurrency; signed as exits 4A (east) and 4B (west)
}}
{{GAint|exit
|type=incomplete
|mile=7.4
|exit=4C
|road=Hammond Drive
|notes=Southbound exit and northbound entrance only; scheduled to be part of exit 5 at conclusion of I-285–SR&nbsp;400 interchange project
}}
{{GAint|exit
|mile=8.4
|exit=5
|road=Abernathy Road&nbsp;– [[Dunwoody, Georgia|Dunwoody]], [[Sandy Springs, Georgia|Sandy Springs]]
|notes=Northbound exits signed as exits 5A (east) and 5B (west) from 1993 to 2020 
}}
{{GAint|exit
|type=incomplete
|mile=10.0
|exit=5C
|road={{jct|extra=light-rail}}{{jct|extra=bus}} [[North Springs (MARTA station)|North Springs MARTA station]]
|notes=Southbound exit and northbound entrance only; no commercial vehicles; scheduled to be part of exit 5 at conclusion of I-285–SR&nbsp;400 interchange project <br /> Northern terminus of [[Red Line (MARTA)|Red Line]]
}}
{{GAint|exit
|mile=12.0
|exit=6
|road=Northridge Road
|notes=Mayor Eva Cohn Galambos Memorial Interchange<ref>{{cite web |title = House Resolution 1052 (AS PASSED HOUSE AND SENATE) |url = http://www.legis.ga.gov/Legislation/20152016/162139.pdf |website = [[Georgia General Assembly]] Legislation |access-date = February 14, 2019 }}</ref>
}}
{{GAint|exit
|location=Roswell
|mile=15.0
|exit=7
|road={{jct|state=GA|SR|140|name1=Holcomb Bridge Road|city1=Roswell|city2=Peachtree Corners}}
|notes=Northbound exit signed as exits 7A (east) and 7B (west); southbound exit signed only as Roswell.
}}
{{GAint|exit
|location=Alpharetta
|lspan=4
|mile=16.4
|exit=8
|road=Mansell Road
}}
{{GAint|exit
|mile=18.3
|exit=9
|road=Haynes Bridge Road
}}
{{GAint|exit
|mile=19.6
|exit=10
|road={{jct|state=GA|SR|120|name1=Old Milton Parkway|city1=Alpharetta}}
}}
{{GAint|exit
|mile=21.0
|exit=11
|road=Windward Parkway
}}
{{GAint|exit
|county1=Fulton
|county2=Forsyth
|location=Milton
|mile=22.4
|exit=11B
|road=McGinnis Ferry Road
|notes=Opened in 2023<ref name="Forsyth County News">{{cite web |title = Here's the latest on 6 transportation projects in Forsyth County |url = https://www.forsythnews.com/news/transportation/heres-the-latest-on-6-transportation-projects-in-forsyth-county/ |date = August 13, 2021 }}</ref>
}}
{{GAint|exit
|county=Forsyth
|cspan=7
|location=none
|mile=23.8
|exit=12
|road=McFarland Parkway
|notes=Northbound exit signed as exits 12A (east) and 12B (west)
}}
{{GAint|exit
|location=none
|mile=28
|exit=13
|road={{jct|state=GA|SR|141|name1=Peachtree Parkway|city1=Cumming|city2=Norcross}}
}}
{{GAint|exit
|location=none
|mile=30.8
|exit=14
|road={{jct|state=GA|SR|20|city1=Cumming|city2=Buford}}
|notes=Northbound exit signed as exits 14A (east) and 14B (west)
}}
{{GAint|exit
|location=Cumming
|mile=32.8
|exit=15
|road=Bald Ridge Marina Road
}}
{{GAint|exit
|location=none
|lspan=3
|mile=34.7
|exit=16
|road=Pilgrim Mill Road – [[Cumming, Georgia|Cumming]]
}}
{{GAint|exit
|mile=36.3
|exit=17
|road={{jct|state=GA|SR|306|name1=Keith Bridge Road|city1=Gainesville}}
}}
{{GAint|exit
|mile=37.2
|exit=18
|type=
|road={{jct|state=GA|SR|369|name1=Browns Bridge Road|city1=Canton|city2=Gainesville}}
|notes=End of limited access portion, former intersection, converted to interchange in 2023, and the first northward freeway expansion since 1971.
}}

{{GAint|exit
|county=Dawson
|cspan=2
|location=Dawsonville
|mile=44.9
|espan=3
|road={{jct|state=GA|GA|53|city1=Dawsonville|city2=Gainesville}}
|notes=[[Continuous-flow intersection]] 
}}
{{GAint
|location=none
|mile=47.8
|road={{jct|state=GA|GA|136|city1=Dawsonville|city2=Gainesville}}
}}
{{GAint
|county=Lumpkin
|location=none
|type=concur
|mile=53.7
|road={{jct|state=GA|US|19|dir1=north|SR|60|SR|115|dir3=east|city1=Dahlonega|city2=Murrayville|city3=Gainesville}}
|notes=Northern terminus of SR&nbsp;400; western terminus of SR&nbsp;115; northern end of US&nbsp;19 concurrency; J.B. Jones Intersection
}}
{{Jctbtm|exit|keys=closed,concur,incomplete}}

==See also==
* {{Portal-inline|Georgia (U.S. state)}}
* {{portal-inline|U.S. roads}}
* [[Georgia State Route 9E]]
* [[Transportation in Atlanta]]

==Notes==
{{reflist|group=lower-alpha}}

==References==
{{Reflist}}

==External links==
{{AttachedKML|display=title,inline}}
* {{Commons category-inline|Georgia State Route 400}}
* [https://web.archive.org/web/20100721195625/http://www.state-ends.com/georgia/040000/ Georgia State Route 400 on State-Ends.com]
* [http://www.georgiatolls.com/ State Road and Tollway Authority homepage]
* [http://www.peachpass.com/about/ Peach Pass]

[[Category:State highways in Georgia (U.S. state)|400]]
[[Category:Former toll roads in Georgia (U.S. state)]]
[[Category:Transportation in Fulton County, Georgia]]
[[Category:Transportation in Forsyth County, Georgia]]
[[Category:Transportation in Dawson County, Georgia]]
[[Category:Transportation in Lumpkin County, Georgia]]
[[Category:Freeways in the United States]]
[[Category:Roads in Atlanta]]
[[Category:Sandy Springs, Georgia]]
[[Category:Roswell, Georgia]]