State Route 116 marker

State Route 116

Map of Sonoma County in western California with SR 116 highlighted in red
Route information
Maintained by Caltrans
Length46.500 mi[1] (74.834 km)
SR 116 is broken into pieces, and the length does not reflect the US 101 overlap that would be required to make the route continuous.
Tourist
routes		 SR 116 between SR 1 and the Sebastopol city limit[2]
Major junctions
West end SR 1 near Jenner
Major intersections
East end SR 121 near Sonoma
Location
CountryUnited States
StateCalifornia
CountiesSonoma
Highway system
← SR 115→ SR 118

State Route 116 (SR 116) is a state highway in the U.S. state of California in Sonoma County. The route runs from SR 1 on the Pacific coast near Jenner to SR 121 south of Sonoma.

Route description

The California route 116 bridge over the Russian River at Guerneville, viewed from the historic Guerneville Bridge
Southbound State Route 116 in downtown Sebastopol

SR 116 proceeds east along the north bank of the Russian River, from SR 1 to Guerneville, passing through Duncans Mills, Monte Rio, and Guernewood Park as River Road.

At the intersection of the Guerneville Bridge, the route turns southeast and passes through Forestville. River Road continues eastward as a country road towards Fulton and Santa Rosa. The section of SR 116 connecting Guerneville and Forestville is known as Pocket Canyon Road, named for the canyon it passes through. The four east-west blocks of Forestville through which 116 passes are called Front Street, but the route veers south again towards Graton and Sebastopol. Here it is called Gravenstein Highway North until the intersection with Covert Street in Sebastopol. There it undergoes another name change: Healdsburg Avenue. But it doesn't last long—heading south (right turn), it becomes North Main Street for two blocks where it intersects Bodega Highway SR 12), whereupon it becomes South Main Street. When the one-way street becomes a two-way street again, 116 is known as Gravenstein Highway South all the way to Cotati where it runs concurrently with U.S. Route 101 (US 101) as the Redwood Highway south to Petaluma. In Petaluma, Lakeville Highway takes SR 116 to Stage Gulch Road, which makes a left turn east toward Sonoma, crossing the Sonoma Mountains directly north of Tolay Lake and descending into the Sonoma Valley. In Sonoma, SR 116 runs along Arnold Drive to its terminus at SR 121 near Schellville.

SR 116 is part of the California Freeway and Expressway System,[3] and a portion just west of US 101 is part of the National Highway System,[4] a network of highways that are considered essential to the country's economy, defense, and mobility by the Federal Highway Administration.[5] SR 116 is eligible to be included in the State Scenic Highway System,;[6] however, it is only a scenic highway as designated by Caltrans from SR 1 to the Sebastopol city limit,[7] meaning that it is a substantial section of highway passing through a "memorable landscape" with no "visual intrusions", where the potential designation has gained popular favor with the community.[8]

Major intersections

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. R reflects a realignment in the route since then, M indicates a second realignment, L refers to an overlap due to a correction or change, and T indicates postmiles classified as temporary (for a full list of prefixes, see California postmile § Official postmile definitions).[1] Segments that remain unconstructed or have been relinquished to local control may be omitted. The entire route is in Sonoma County.

LocationPostmile
[1][9][10]		Exit
[11]		DestinationsNotes
​0.00 SR 1 – Bodega Bay, Jenner, Fort BraggWest end of SR 116
​21.80Guerneville Road – Santa Rosa
SebastopolR26.73–
R26.82
 SR 12 east (Sebastopol Avenue, Bodega Avenue) – Santa Rosa
Cotati35.03
12.69[N 1]
 US 101 north (Redwood Highway) / Gravenstein Highway – Eureka		Interchange; west end of US 101 overlap
 West end of freeway on US 101
12.00[N 1]481AWest Sierra Avenue – Cotati
​10.67[N 1]479Railroad Avenue
Petaluma5.76[N 1]476Old Redwood Highway, Petaluma Boulevard North (US 101 Bus. south) – Penngrove
4.76[N 1]474East Washington Street – Central Petaluma
 East end of freeway on US 101
3.58[N 1]
35.04
 US 101 south (Redwood Highway) / Lakeville Street – San Francisco		Interchange; east end of US 101 overlap
​39.27Lakeville Road – Lakeville, Vallejo
​44.84Arnold Drive – Sonoma
​46.75 SR 121 / Bonneau Road – San Francisco, NapaEast end of SR 116
1.000 mi = 1.609 km; 1.000 km = 0.621 mi
  1. 1 2 3 4 5 6 Indicates that the postmile represents the distance along US 101 rather than SR 116.

See also

References

  1. 1 2 3 California Department of Transportation. "State Truck Route List". Sacramento: California Department of Transportation. Archived from the original (XLS file) on June 30, 2015. Retrieved June 30, 2015.
  2. ↑ California Department of Transportation (August 2019). "Officially Designated State Scenic Highways and Historic Parkways" (XLSX). Sacramento: California Department of Transportation. Retrieved March 27, 2019.
  3. ↑ "Article 2 of Chapter 2 of Division 1". California Streets and Highways Code. Sacramento: California Office of Legislative Counsel. Retrieved February 6, 2019.
  4. ↑ Federal Highway Administration (March 25, 2015). National Highway System: Santa Rosa, CA (PDF) (Map). Scale not given. Washington, DC: Federal Highway Administration. Retrieved September 30, 2017.
  5. ↑ Natzke, Stefan; Neathery, Mike & Adderly, Kevin (June 20, 2012). "What is the National Highway System?". National Highway System. Washington, DC: Federal Highway Administration. Retrieved July 1, 2012.
  6. ↑ "Article 2.5 of Chapter 2 of Division 1". California Streets & Highways Code. Sacramento: California Office of Legislative Counsel. Retrieved February 6, 2019.
  7. ↑ California Department of Transportation (August 2019). "Officially Designated State Scenic Highways and Historic Parkways" (XLSX). Sacramento: California Department of Transportation. Retrieved September 30, 2017.
  8. ↑ California Department of Transportation (2012). Scenic Highway Guidelines (PDF). Sacramento: California Department of Transportation. p. 5. Retrieved June 8, 2017.
  9. ↑ California Department of Transportation (July 2007). "Log of Bridges on State Highways". Sacramento: California Department of Transportation.
  10. ↑ California Department of Transportation, All Traffic Volumes on CSHS, 2005 and 2006
  11. ↑ California Department of Transportation, California Numbered Exit Uniform System, U.S. Route 101 Freeway Interchanges, Retrieved on 2009-02-07.
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