SR 190 heads west along Washington Street where it passes numerous houses, churches, and other community buildings.

The setting becomes more rural and heads in a more northwesterly direction at Clark Street.

The road skirts around the east side of Quoddy, a settlement within the city of Eastport.

It then enters the town of Perry and heads through a mix of residences and woods.

The road ends at a T-intersection with US 1 in a rural area southwest of the town center.