California State Route 53

State Route 53

SR 53 highlighted in red

Route information

Maintained by Caltrans

Length

7.45 mi^[1] (11.99 km)

Major junctions

South end

SR 29 at Lower Lake

North end

SR 20 near Clearlake

Location

Country

United States

State

California

Counties

Lake

Highway system

State highways in California

←

SR 52

→

SR 54

State Route 53 (SR 53), also known as the Clearlake Expressway for part of its length, is a state highway in the U.S. state of California that runs in a north–south direction in Lake County east of Clear Lake, It connects SR 29 and SR 20 via the city of Clearlake.

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Route description

SR 53 begins at California State Route 29 in the town of Lower Lake, near Anderson Marsh State Historic Park, primarily as a four-lane divided semi-rural expressway. The highway then heads northward along Clear Lake, the largest freshwater lake located entirely in California. It bypasses the center of Clearlake, California, instead going through the neighborhood of the "Avenues". Once it crosses Lakeshore Drive, it narrows down to a two-lane highway until its northern terminus at California State Route 20 north of the city limits.^[2]

State Route 53 is part of the California Freeway and Expressway System,^[3] and 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 53 is eligible for the State Scenic Highway System,^[6] but it is not officially designated as a scenic highway by the California Department of Transportation.^[7]

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).^[8] Segments that remain unconstructed or have been relinquished to local control may be omitted. The entire route is in Lake County.

Location	Postmile ^[8]^[1]^[9]	Destinations	Notes
Lower Lake	0.00	SR 29 (Lower Lake Road) / Morgan Valley Road – Lakeport, Middletown	South end of SR 53
Clearlake	1.47	Lakeshore Drive; Old State Highway	Former SR 53 north
Clearlake	2.96	Clearlake Highlands, 40th Avenue	Former SR 53 south
	7.45	SR 20 to US 101 – Williams, Clearlake Oaks, Northshore Resorts	North end of SR 53
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

References

^ ^a ^b California Department of Transportation (April 2008). "Log of Bridges on State Highways". Sacramento: California Department of Transportation.
^ California Road Atlas (Map). Thomas Brothers. 2008.
^ "Article 2 of Chapter 2 of Division 1". California Streets and Highways Code. Sacramento: California Office of Legislative Counsel. Retrieved February 6, 2019.
^ Federal Highway Administration (March 25, 2015). National Highway System: California (North) (PDF) (Map). Scale not given. Washington, DC: Federal Highway Administration. Retrieved October 14, 2017.
^ 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.
^ "Article 2.5 of Chapter 2 of Division 1". California Streets & Highways Code. Sacramento: California Office of Legislative Counsel. Retrieved February 6, 2019.
^ California Department of Transportation (August 2019). "Officially Designated State Scenic Highways and Historic Parkways" (XLSX). Sacramento: California Department of Transportation. Retrieved October 14, 2017.
^ ^a ^b 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.
^ California Department of Transportation, All Traffic Volumes on CSHS, 2007