U.S. Route 45 in Alabama

U.S. Route 45
US 45 highlighted in red
Route information
Maintained by ALDOT
Length	59.181 mi[1] (95.243 km)
Major junctions
South end	US 98 in Mobile
Major intersections	I-65 in Prichard SR 17 north of Deer Park
North end	US 45 near State Line, Mississippi
Location
Country	United States
State	Alabama
Counties	Mobile, Washington
Highway system
United States Numbered Highway System List Special Divided Alabama State Highway System Interstate US State
← SR 44 US 45 → SR 46 ← SR 56 SR 57 → I-59

In the U.S. state of Alabama, U.S. Route 45 (US 45) is a 60-mile-long (97 km) north–south United States Highway in the east south central state of Alabama. It travels from Mobile to the Mississippi state line, just east of State Line, Mississippi. The highway's southern terminus is in Mobile, at an intersection with US 98. Its northern terminus in the state of Alabama is at the Mississippi state line.

In Alabama, all of the U.S. Highways have one or more unsigned state highways designated along its length. US 45 travels concurrently with State Route 17 (SR 17) from its southern terminus to just north of Deer Park. For the rest of its length in the state, the highway travels concurrently with State Route 57 (SR 57).