[2][3] Most of the road is two lanes wide, with the exception of the route through the cities of Lompoc and Buellton.

The SR 246/SR 1 concurrency continues east along Ocean Avenue to the eastern edge of the city.

It narrows once again to two lanes through Solvang and Santa Ynez before reaching its eastern terminus at the junction with State Route 154.

[11] SR 246 used to run all the way west to Surf, but this segment along Ocean Avenue to the western city limits of Lompoc was relinquished to local control in 1984.

Except where prefixed with a letter, postmiles were measured on the road as it was in 1964, based on the alignment that existed at the time, and do not necessarily reflect current mileage.