The route has continued into Montgomery County for a short distance as a county-maintained road since at least 1970.

(Atlantic Boulevard continues several blocks further as a local road to the beach.)

Past this intersection, Main Street continues as an unnumbered road into the center of town.

Route 8 continues as a rural minor arterial road into Massachusetts.

North of Rockingham continues as a two-lane road.

KY 18 continues east, still as a mostly commercial road.

State Routes 208 and 9 continue as a concurrent road north into downtown Biddeford.

It then continues east into Modi'in as a local road.

Highway 40 continues as a 2 lane undivided road, passing through several small towns including:

From here, the route continues past a mix of residences and businesses as a two-lane undivided road.