State Route 70 (SR 70) is an 8.290-mile-long (13.341 km) state highway entirely within southern Shelby County in the north-central part of the U.S. state of Alabama. The western terminus of the highway is at an intersection with U.S. Route 31 (US 31), just north of Calera. The eastern terminus of the highway is at an intersection with SR 25 in Columbiana. West of the western terminus, the roadway continues as . The interchange of US 31 with Interstate 65 (I-65) at exit 231 is less than one mile (1.6 km) from the intersection of US 31 with SR 70.
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The intersection of SR 70 with US 31 is approximately 25 miles (40 km) south of downtown Birmingham. Until the mid-1990s, SR 70 between Columbiana and Calera traveled through a mostly rural area of the county. Since then, numerous new housing developments have been constructed along this highway, to house part of the growing population of Shelby County. Besides Columbiana and Calera, SR 70 does not travels through any other incorporated towns or villages.
US 31 at Calera
SR 25 at Columbiana
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US 31 (SR 3) / CR 22 west – Montevallo, Calera, Alabaster
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