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| Georgia State Route 42 | |
|---|---|
| State | GA |
| Type | SR |
| Route | 42 |
| Length mi | 79.5 |
| Direction a | South |
| Terminus a | Jackson |
| Direction b | North |
| Terminus b | Atlanta |
| Counties | Butts County, Henry County, Spalding County, Fayette County, Clayton County, DeKalb County, Fulton County |
Georgia State Route 42 is a state highway in the U.S. state of Georgia that connects Jackson in the south with Atlanta in the north, traversing a mix of rural, suburban, and urban landscapes. The route serves as a connector between several principal arterial roads and interstates, providing access to communities including McDonough, Fayetteville, and Riverdale. Established in the early 20th century, the corridor has undergone multiple realignments and interacts with major transportation nodes such as Interstate 75, Interstate 675, and U.S. Route 19.
SR 42 begins in Jackson at an intersection with US 23 and proceeds northward through Butts County toward McDonough, intersecting US 23 Business and crossing corridors that lead to Lake Jackson and SR 16. Continuing into Spalding County, the route reaches Griffin area approaches and connects with US 19 and US 41, providing linkage to I-75 and commercial centers serving Perry and Macon. Through Fayette County the highway passes near Fayetteville and intersects roadways feeding Fort Benning–adjacent transportation axes and suburban developments associated with Peachtree City. Entering Clayton County and DeKalb County, the corridor serves Riverdale and Decatur suburbs before reaching its northern terminus in Atlanta near major interchanges with I-20, I-285, and arterial routes to Hartsfield–Jackson Atlanta International Airport.
The alignment that became SR 42 traces origins to early state road plans tied to 1920s efforts to connect county seats such as Jackson and McDonough with the state capital Atlanta. During the New Deal era and post-World War II expansion, SR 42 saw paving and designation enhancements paralleling growth in Henry County and Fulton County. The mid-20th century construction of I-75 and I-285 prompted realignments to improve access to Hartsfield–Jackson Atlanta International Airport and industrial zones near Savannah-bound freight corridors. Late 20th and early 21st century suburbanization around McDonough, Fayetteville, and Riverdale led to corridor widening projects influenced by regional planning agencies such as the Atlanta Regional Commission and transportation initiatives tied to Federal Highway Administration programs.
SR 42 intersects several principal routes and interstates that serve as freight and commuter arteries. Notable junctions include its southern terminus at US 23 in Jackson; connections with SR 16 near Jackson; intersections with US 19 and US 41 providing access toward Macon and Atlanta; an interchange with I-75 facilitating north–south movement; crossings of U.S. Route 23/US 41 corridors that link to Columbus and Augusta routes; and northern termini proximate to I-20 and I-285 in the Atlanta metropolitan network, intersecting local arterials used by commuters to Decatur and Hapeville.
SR 42 has spawned or interfaces with related numbered routes and spurs that address local access and continuity. These include connector segments tying to SR 74 and SR 54 near Fayetteville and Peachtree City; business alignments through downtown McDonough and Griffin; and auxiliary links that provide continuity to US 23 and US 19. Coordination with regional corridors such as SR 520 and planning bodies including the Metropolitan Atlanta Rapid Transit Authority has influenced corridor-level decisions and multimodal connections.
Planned improvements for the SR 42 corridor reflect metropolitan growth projections and freight mobility strategies promoted by the Georgia Department of Transportation and the Atlanta Regional Commission. Proposals have included targeted widening to add capacity near McDonough and Fayetteville, intersection upgrades where SR 42 meets I-675 and US 19, and pedestrian-bicycle enhancements connecting to Silver Comet Trail-style networks. Funding discussions have referenced federal programs administered by the Federal Highway Administration and state bond initiatives that also supported projects on I-75 and I-285.
Over its history, several segments of the original SR 42 alignment were decommissioned or reclassified as local or business routes amid construction of interstates and new state highways. Notable realignments shifted the primary route to bypass downtown cores such as McDonough and Griffin, while former corridors were redesignated as county roads under the jurisdiction of Henry County and Spalding County. These changes paralleled statewide modernization efforts that also altered routes for US 41 and US 19 to improve through movement and freight efficiency.
Category:State highways in Georgia