Stemple Creek is a 16 mi (26 km) long, westward-flowing stream in the California counties of Sonoma and Marin, which feeds into the Estero de San Antonio.

[1] Its waters ultimately reach Bodega Bay, part of the Gulf of the Farallones National Marine Sanctuary on the Pacific Ocean.

It passes south of Two Rock, California, then crosses into Marin County just west of Training Center Petaluma.

The newest and longest of these, built in 1982, is the 210 ft (64 m) long concrete slab structure at milepost 47.41 on State Route 1.

The oldest, built in 1915, is the 39 ft (11.9 m) concrete tee beam bridge carrying Valley Ford Road, located 7.5 mi (12.1 km) from State Route 1.