It travels from U.S. Route 231 (US 231) in St. Clair County near Pell City to US 431 at Alexandria in Calhoun County.

The highway is two lanes for its entire length.

The highway also crosses the Coosa River using the bridge across the Neely Henry Dam.

SR 62 is now assigned to a short highway in Marshall County.

Also, the section of SR 144 between SR 77 and Ragland was signed as St. Clair County Route 26 (CR 26) until SR 144 was extended eastward.