Spanning just over 5 miles (8.0 km), it connects Helper and Spring Glen with Kenilworth to the northeast.

State Route 157 begins on US-6/US-191 at the Poplar Street/Hill Street interchange in the city of Helper.

The route then continues south 1.2 miles (1.9 km) along South Main Street (which becomes North Spring Glen Road) toward Spring Glen, parallel to US-6/US-191, before turning east onto Kenilworth Road (initially 4500 North).

[1][3] State Route 157 was established in 1933 as connecting what was then SR-8 (now US-6) between Helper and Spring Glen with Kenilworth.

[2][4] The entirety of the former SR-244 designation, which includes the Poplar Street segment of modern SR-157, remains signed as U.S. Route 6 Business.