From Main Street (US 1/SR 27), it heads north past many houses, a cemetery, school, and a museum.

It enters the town of Alna and continues north through a mix of wooded areas and houses.

At the settlement known as Alna Center, SR 218 passes the town hall and fire department.

SR 218 strays further from the river at this point first passing a sand quarry but then returns to closely following it on top of a bluff.

It first passes a general store/gas station then heads through an area containing houses, clearings, and woods.