State Route 36 (SR 36) is a 44.5-mile-long (71.6 km) east–west state highway in the northern part of the U.S. state of Alabama. The western terminus of the highway is at its intersection with SR 33 at Wren, an unincorporated community in Lawrence County. The eastern terminus of the highway is at its intersection with U.S. Route 231 (US 231) at Lacey’s Spring in Morgan County.
Alabama State Route 36 begins in Wren at AL-33. To the south is the hill that is characteristic of the northern border of the William B. Bankhead National Forest directly visible to the south. It enters Speake and junctions with AL-157 directly after an s-bend. It crosses the two roadways of the road (AL-157 is a four-lane divided highway) and s-bends again. It crosses the county line into Morgan County.
The route almost immediately enters Danville and junctions with CR-41 (Danville Road), which leads to Addison and Decatur. . It junctions with CR-72 (Iron Man Road) and continues onward to U.S. 31 in Hartselle. It passes through the center of town and reaches I-65 three miles later. Past this point, the route is in almost a completely straight line. To the south, there are visible mountains. It eventually junctions with AL-67. This is located in Somerville, in a part referred to by some as Pence. Two miles later, it turns northeast and passes through forest, entering Cotaco, which is home to its junctions with CR-35 (Cotaco-Florette Road) and CR-32 (Union Hill Road). It passes by Lacey Springs then drops down to its eastern terminus at U.S. 231. This junction is four miles south of the Tennessee River/Huntsville's city limits and fourteen miles north of Arab.
The current designation of SR 36 was formed in 1957 along the former route of SR 33. Beginning in 1940, the first incarnation of SR 36 was along the current route of SR 33.
SR 33 in Wren
SR 157 southeast of Moulton
US 31 in Hartselle
I-65 in Hartselle
SR 67 southeast of Somerville
US 231 in Lacey’s Spring
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CR 41 (Danville Road)
