Spanning 2.7 miles (4.3 km), it connects State Route 198 (Main Street) with Interstate 15 south of Spanish Fork in Utah County.

State Route 164 begins at exit 253 of Interstate 15 just south of Spanish Fork.

[1][3] The route travels east along 8000 South for about 1.6 miles (2.6 km) before becoming Arrowhead Trail road and turning to the northeast for another 1.1 miles (1.8 km) and ending at SR-198.

[2] The route has remained unchanged since then, save for minor rewording in the description to accommodate the renumbering of SR-198 at its eastern terminus.

[2] The entire route is in Utah County.