The highway runs for 20+1⁄2 miles (33.0 km) from the village of Shin Pond in Mt.

SR 159 begins in the west at Shin Pond Village in the northwest corner of Mt.

Chase, on Shin Pond Road about 10 miles (16 km) northwest of SR 11.

[2] The highway proceeds almost due south and slightly east through Mt.

Crossing into Island Falls, SR 159 interchanges with Interstate 95 at exit 276 before terminating at US 2 in the town center.