California State Route 116

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State Route 116

Defined by S&HC § 416, maintained by Caltrans

Length:

46.76 mi^[1] (75.25 km)

West end:

SR 1 near Jenner

Major
junctions:

SR 12 in Sebastopol

US 101 in Petaluma

East end:

SR 121 near Sonoma

State highways in California (list - pre-1964)
County routes in California (list)
< SR 115		SR 118 >
History - Unconstructed - Deleted - Freeway - Scenic

State Route 116 is a state highway in Sonoma County, California, U.S. which runs from State Route 1 on the Pacific coast near Jenner to State Route 121 south of Sonoma.

This route is part of the California Freeway and Expressway System^[2] and is eligible for the State Scenic Highway System^[3].

[edit] Route description

State Route 116 proceeds east along the north bank of the Russian River, from State Route 1 to Guerneville, passing through Duncans Mills, Monte Rio, and Guernewood Park. In this section, it is generally called River Road.

At Guerneville, the route turns south-east and passes through Forestville, Graton, and Sebastopol (where it intersects State Route 12) to join U.S. Route 101 in Cotati. In this section, it is generally called Guerneville Highway or Gravenstein Highway.

Southbound State Route 116 in downtown Sebastopol.

The route follows the U.S. 101 alignment south from Cotati to Petaluma, a stretch Caltrans calls the Cotati Grade.

From southern Petaluma, State Route 116 diverges from 101 and heads east again, crossing the Sonoma Mountains directly north of Tolay Lake and descending into the Sonoma Valley to its terminus at State Route 121. In this section, it goes by several names: Lakeville Highway, Stage Gulch Road, and Arnold Drive.