 U.S. Route 78 | ||||
|---|---|---|---|---|
| State Route 4 | ||||
 US 78 highlighted in red | ||||
| Route information | ||||
| Maintained by ALDOT | ||||
| Existed | 1926–present | |||
| Major junctions | ||||
| West end |   I-22 / US 78 at the Mississippi state line | |||
| East end | US 78 at the Georgia state line | |||
| Location | ||||
| Country | United States | |||
| State | Alabama | |||
| Counties | Marion, Walker, Jefferson, Saint Clair, Talladega, Calhoun, Cleburne | |||
| Highway system | ||||
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U.S. Route 78 (US 78) is a major east–west U.S. Highway across the central part of Alabama. It is internally designated State Route 4 (SR 4) by the Alabama Department of Transportation (ALDOT), though the only section of SR 4 that is signed is along portions mainly west of Jasper. The section from the Mississippi state line to near Graysville is concurrent with Interstate 22 (I-22); from Graysville south to Birmingham, US 78 takes its original routing. East of Birmingham to the Georgia state line, US 78 has been replaced as a major through-route by I-20. The two routes roughly parallel each other, with junctions at Leeds and Pell City.[1][2]
West of Jasper, old US 78 is signed as SR 118 to Guin, and the segment from Guin northward to I-22 at Hamilton is signed as US 43/US 278.
- ^ "Overview Map of US 78 (AL; 1)" (Map). Google Maps. Retrieved January 2, 2023.
- ^ "Overview Map of US 78 (AL; 2)" (Map). Google Maps. Retrieved January 5, 2023.