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Interstate 675 (Georgia)

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Interstate 675 (Georgia)
Interstate 675 (Georgia)
Public domain · source
StateGA
Route675
Length mi11.92
Established1986
HistoryOpened 1987–1990
Direction aSouth
Terminus aGeorgia State Route 401, Georgia State Route 401 near Fayette County
JunctionInterstate 285 (Georgia), Interstate 285 (Georgia) in DeKalb County
Direction bNorth
Terminus bInterstate 75 (Georgia), Interstate 75 (Georgia) in Clayton County
CountiesFulton County; DeKalb County; Clayton County

Interstate 675 (Georgia) is an auxiliary Interstate spur serving the southern suburbs of Atlanta, running north–south for approximately 11.9 miles. The route links major corridors including I‑75, I‑285, and connects suburban municipalities such as Stockbridge, Morrow, and Forest Park. Built in the late 20th century, the highway functions as a commuter artery, freight route, and hurricane-evacuation corridor for the Atlanta metro area.

Route description

The freeway begins near Fayetteville and proceeds north through Henry County adjacent to Clayton County suburbs, intersecting state routes such as SR 138 and SR 42. As it approaches Hartsfield–Jackson Airport airspace, I‑675 crosses municipal boundaries into Forest Park and meets I‑285 at a major stack that provides movements to the airport, downtown Atlanta, and Cobb County via I‑20. North of I‑285 the route continues through DeKalb County, skirting communities such as Union City before terminating at I‑75 near Stockbridge and Clayton State University.

The right-of-way features collector–distributor lanes near the I‑285 interchange and bridges spanning waterways including the South River and tributaries of the Ocmulgee River. Roadway features incorporate variable-message signs used by agencies such as the Georgia DOT, and connections to park-and-ride facilities serving regional transit providers including MARTA and Xpress GA.

History

Plans for an arterial route paralleling Peach State corridors date to regional studies coordinated by entities such as the MARTA and the Georgia DOT in the 1960s and 1970s, alongside proposals related to the Interstate Highway System expansion. Environmental reviews referenced wetlands associated with the Chattahoochee watershed and federal statutes administered by the USDOT. Construction progressed in phases during the 1980s, with segments opening concurrently with improvements to I‑75 and I‑285. The highway played roles in regional events such as traffic management for the 1996 Summer Olympics planning and local emergency responses to storms that impacted airport operations.

Community engagement involved municipal governments including Clayton County, DeKalb County, and local institutions such as Clayton State University and Emory University affiliates, influencing interchange design and noise mitigation. Later rehabilitation projects addressed pavement deterioration consistent with national programs administered by the FHWA.

Future and proposed changes

Proposals under discussion with the Georgia DOT, regional planning organizations like the Atlanta Regional Commission, and federal partners include widening projects, managed lanes concepts similar to those on I‑85 and I‑75 corridors, and interchange reconfiguration at I‑285 to improve freight access to Port of Savannah supply chains. Transit-oriented development proposals near the corridor reference connections to MARTA expansions and HOV or Express Lane conversions modeled after the Peach Pass system. Environmental reviews would involve the EPA and compliance with statutes administered by the NHTSA where applicable.

Community groups, business coalitions such as Metro Atlanta Chamber of Commerce, and municipal planning departments have proposed multimodal improvements, enhanced bicycle and pedestrian crossings in coordination with agencies like Georgia DNR to protect riparian corridors.

Exit list

Note: mileposts correspond to Georgia DOT conventions and federal mileposting used on the Interstate System.

- Southern terminus — connection with SR 401/local arterial roads serving Fayette County and Fayetteville. - Interchange with SR 42 — access to Morrow and Jonesboro. - Interchange with SR 138 — access to Riverdale. - Major interchange — I‑285 (outer perimeter) — movements to airport, downtown, and Cobb County. - Northern terminus — junction with I‑75 near Stockbridge and Jonesboro.

Traffic and safety

Traffic volumes are influenced by commuter flows from suburbs such as Stockbridge, Morrow, and Union City into downtown Atlanta and to Hartsfield–Jackson Airport; peak-hour patterns mirror regional trends analyzed by the ARC and Georgia DOT. Freight traffic utilizes the corridor to access distribution centers served by chains headquartered in the region and to reach the Port of Savannah via I‑75 and I‑16 connectors. Safety initiatives have included resurfacing projects, improved lighting in collaboration with county sheriffs' offices such as the Clayton County Sheriff's Office and the Fulton County Sheriff's Office, and enforcement campaigns supported by the Georgia State Patrol.

Accident mitigation measures reference federal best practices from the FHWA and state-level guidelines from Georgia DOT; countermeasures have addressed incidents involving hazardous materials with coordination from agencies including the EPA and local emergency management agencies.

I‑675 interfaces with primary corridors including I‑75, I‑285, and nearby state routes such as SR 42 and SR 138. The spur complements other Atlanta-area auxiliary Interstates such as I‑285 and I‑85 spurs, forming part of the NHS critical to commerce and mobility in the Atlanta metro area. Transit connections include services by MARTA and regional commuter bus services like Xpress GA.

Category:Interstate Highways in Georgia