Hercules, California

I-80 east at Exit 23 - CA-4 East/Hercules/Stockton. Approaching Exit 24 - Willow Ave. This is the western end of CA-4, which follows the south side of the Carquinez Straits towards Stockton. CA-4 is a trans-Sierra highway, crossing at Ebbetts Pass. I-80 continues east towards Sacramento.