The highway ends at the Idaho state line north of Willard Field.

[3] The roadway continues east as SH-60, traveling 5.510 miles (8.867 km) through the Coeur d'Alene Reservation in Benewah County to end at U.S. Route 95 (US-95).

[5] SR 274 follows the route of an Oregon Railroad and Navigation Company line built in the 1890s between Tekoa and Plummer.

[6] A road was later built north of Little Hangman Creek and codified in 1937 as a branch of SSH 3H.

Bicycle Route 40 was designated along SR 274 from Tekoa to the Idaho state line.