State Route 251 (California)
 
Examples of unconstructed routes in California
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| Highway names | |
|---|---|
| Interstates: | Interstate XX (I-XX) |
| US Highways: | U.S. Route XX (US XX) |
| State: | State Route XX (SR XX) |
| System links | |
The following state highways in the U.S. state of California are entirely or partially unconstructed; in other words, their routings have been defined by state law, but no route has been adopted by the California Department of Transportation (Caltrans).
State Route 11 is a planned 3-mile (4.8 km) tolled route, running southeast from near the junction of SR 905 and SR 125 to a future Mexican border crossing east of Otay Mesa. The first phase of the highway from SR 905 to Enrico Fermi Drive opened on March 19, 2016.
The westernmost 9.2 miles (14.8 km) of State Route 12 are unconstructed, from SR 116 in Sebastopol west to SR 1. This would be today's Bodega Highway and Freestone-Valley Ford Road, but Caltrans has no plans to take them over.
The south end of State Route 13 is unconstructed, extending 4.5 miles (7.2 km) beyond I-580 to SR 61 near the Oakland International Airport. A very short piece at the north end has also not been built, extending west into the San Francisco Bay to the unconstructed SR 61 freeway.
A 21.8-mile (35.1 km) extension of State Route 14 from the Newhall Pass interchange with I-5 south to SR 1 northwest of Santa Monica was once proposed as the Reseda Freeway. The post miles on the existing alignment reflect the existence of this unconstructed segment, but the new exit numbers on State Route 14 suggest this segment has been abandoned. The section between US 101 and SR 118 would be Reseda Boulevard, but Caltrans has no plans to take it over.
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