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Historic Bridges in California

4,414 bridges built before 1951 in California still in service today.

Bridges Built Before 1951

The United States has 4,414 bridges in California built before 1951 that remain in active service. These structures are 75+ years old — many predate modern engineering codes and were not designed for today's traffic volumes and vehicle weights. The average design life of a bridge is 50 years, making these aging structures a significant infrastructure concern.

Clear
Bridge State Condition Year Built Age (Years) ADT
RUBIO WASH California Fair 1914 112 32,542
ARROYO SECO CHAN California Good 1914 112 3,570
Live Oak Cyn. Channel California Good 1914 112 204
WEST CUCAMONGA WASH California Good 1914 112 30,172
MIDDLE CHANNEL DAY WASH California Good 1914 112 47,000
SAN ANTONIO OVERFLOW California Good 1914 112 21,500
SAN ANTONIO OVERFLOW California Fair 1914 112 21,500
CUCAMONGA OVERFLOW California Fair 1914 112 31,500
BUENA VISTA CREEK California Fair 1914 112 19,173
UNIVERSITY AVE California Good 1914 112 2,179
HUTTON CREEK California Fair 1915 111 25
SACRAMENTO RIVER California Fair 1915 111 320
STRONGS CREEK California Fair 1915 111 4,924
SHOTGUN CREEK California Fair 1915 111 10
PAYNES CREEK SLOUGH California Poor 1915 111 1,373
SAMSON SLOUGH California Poor 1915 111 1,837
THEMPER DITCH California Fair 1915 111 4,152
WILLOW CREEK California Fair 1915 111 2,678
WILLOW CREEK OVERFLOW California Fair 1915 111 2,678
WILSON CREEK OVERFLOW California Good 1915 111 2,678
EAST FORK WILSON CREEK California Fair 1915 111 2,678
CROSS DRAIN California Good 1915 111 11,600
CROSS DRAIN California Good 1915 111 11,600
NELSON SLOUGH California Good 1915 111 1,254
LOST SLOUGH California Good 1915 111 1,380
MIDDLE FORK HAMLIN SLU California Fair 1915 111 1,254
OSTAP ARCH California Fair 1915 111 5,462
POWELL SLOUGH California Good 1915 111 6,400
STONE CORRAL CREEK OVFL California Fair 1915 111 1,976
FUNKS CREEK OVERFLOW California Fair 1915 111 642
SYCAMORE SLOUGH California Poor 1915 111 70
SYCAMORE SLOUGH California Poor 1915 111 60
LITTLE INDIAN CREEK California Poor 1915 111 37
GRASSHOPPER SLOUGH California Fair 1915 111 25,000
DRY CREEK California Good 1915 111 22,000
BEST SLOUGH California Good 1915 111 25,000
ROCK CREEK California Poor 1915 111 62
STEMPLE CREEK California Fair 1915 111 3,100
SANTA ROSA CREEK California Good 1915 111 500
MAACAMA CREEK California Fair 1915 111 800
DRY CREEK California Fair 1915 111 838
CALABAZAS CREEK California Fair 1915 111 800
SCHOOL DRAW California Fair 1915 111 3,200
JAMESON CANYON CREEK California Fair 1915 111 4,470
AMERICAN RIVER California Poor 1915 111 26,500
GOLD CREEK California Fair 1915 111 1,000
SOUTH FK AMERICAN RIVER California Fair 1915 111 284
FRENCH CREEK California Fair 1915 111 1,000
OLD RIVER California Poor 1915 111 8,200
MIDDLE RIVER California Fair 1915 111 7,200

About Historic Bridge Data

Bridges built before 1951 are classified as historic in this database. Many were designed to 1940s standards with lower load limits and narrower lanes. While FHWA requires regular inspections of all bridges regardless of age, older structures often require more frequent monitoring and rehabilitation investment.

All Bridges Poor Condition Scour Critical Bridge Stats