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
BURCH CREEK California Fair 1925 101 955
SODA CREEK California Fair 1925 101 2,300
MILL CREEK California Poor 1925 101 78
BRANCH OF HAEHL CREEK California Fair 1925 101 62
CENTRAL IRRIGATION CANAL California Fair 1925 101 3,050
ANGEL SLOUGH California Poor 1925 101 586
NO NAME DRAIN California Fair 1925 101 397
WHITE CABIN CREEK California Fair 1925 101 185
BRANCH WALKER CREEK California Good 1925 101 155
BRANCH SALT CREEK California Poor 1925 101 91
GLENN-COLUSA CANAL California Fair 1925 101 1,452
CAMP CREEK California Fair 1925 101 20
LINDO CHANNEL California Fair 1925 101 24,100
BIG CHICO CREEK California Fair 1925 101 1,013
ROCKY HONCUT CREEK California Fair 1925 101 234
ROBINSON CREEK California Fair 1925 101 65
HENDRICKS CREEK California Fair 1925 101 594
NORTH BRANCH BRUSH CREEK California Fair 1925 101 1,958
KIMBALL CREEK California Fair 1925 101 230
HUTCHINSON CREEK California Fair 1925 101 1,700
REEDS CREEK OVERFLOW California Good 1925 101 1,700
REEDS CREEK California Fair 1925 101 1,700
DONNER SUMMIT California Fair 1925 101 552
WESTSIDE CANAL California Poor 1925 101 61
WESTSIDE CANAL California Poor 1925 101 12
COON CREEK OVERFLOW California Fair 1925 101 405
COON CREEK California Good 1925 101 140
COON CREEK California Good 1925 101 122
SNAKE RIVER California Fair 1925 101 768
S BRNCH SUTTER-BUTTE CNL California Poor 1925 101 1,159
SNAKE RIVER California Poor 1925 101 325
SOUTH YUBA RIVER California Fair 1925 101 50
YANKEE SLOUGH California Good 1925 101 760
AUBURN RAVINE California Fair 1925 101 4,403
BLUCHER CREEK California Good 1925 101 1,562
PETALUMA RIVER California Good 1925 101 4,200
POOL CREEK California Fair 1925 101 13,800
POOL CREEK California Good 1925 101 2,000
MILLIKEN CREEK California Fair 1925 101 1,033
CONN CREEK OVERFLOW California Good 1925 101 970
TULOCAY CR (CAYETANO CR) California Good 1925 101 2,836
GOODNOW SLOUGH California Good 1925 101 461
DENVERTON SLOUGH California Good 1925 101 30
HUMBUG CREEK California Good 1925 101 10,000
DRAINAGE DITCH California Fair 1925 101 2,346
DRAINAGE DITCH California Good 1925 101 2,346
STONE LAKE DRAIN California Fair 1925 101 2,346
NORTH CHANNEL DRY CREEK California Good 1925 101 6,200
DEER CREEK California Fair 1925 101 200
TRAVERSE CREEK California Fair 1925 101 300

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.