Total Bridges
27,040
Public highway bridges in California
State profile · Below national median SD
California bridge safety
Condition ratings, load ratings, and structural-deficiency data for every public highway bridge in California — drawn straight from the FHWA National Bridge Inventory.
- 27,040
- Public bridges
- 32.5%
- Good condition
- 4.6%
- Poor condition
- 4.6%
- Structurally deficient
Good Condition
32.5%
8,777 bridges rated 7-9
-17.5pp vs 50% benchmark
Poor Condition
4.6%
1,244 bridges rated 0-4
Structurally Deficient
4.6%
1,244 bridges flagged for repair priority
-2.4pp vs national avg 7.0%
California vs national bridge condition
California — Good condition share 32.5%
National avg
Share of bridges rated 7-9 on the FHWA 0-9 scale (deck, superstructure, substructure all good).
California — Structurally deficient share 15.3%
National avg
Lower is better. Bar maxes at 30% (worst-state ceiling). National average sits at 7.0%.
Condition Distribution
Bridge inventory deck-condition mix — California (FHWA NBI)
Counties (58)
Alameda 800 Alpine 32 Amador 62 Butte 441 Calaveras 106 Colusa 211 Contra Costa 686 Del Norte 96 El Dorado 196 Fresno 929 Glenn 242 Humboldt 398 Imperial 448 Inyo 67 Kern 686 Kings 168 Lake 129 Lassen 108 Los Angeles 3937 Madera 250 Marin 217 Mariposa 109 Mendocino 357 Merced 532 Modoc 87 Mono 49 Monterey 390 Napa 160 Nevada 135 Orange 1224 Placer 347 Plumas 170 Riverside 1142 Sacramento 775 San Benito 76 San Bernardino 1465 San Diego 1707 San Francisco 170 San Joaquin 666 San Luis Obispo 408 San Mateo 393 Santa Barbara 429 Santa Clara 1041 Santa Cruz 203 Shasta 500 Sierra 65 Siskiyou 423 Solano 383 Sonoma 613 Stanislaus 390 Sutter 120 Tehama 452 Trinity 194 Tulare 599 Tuolumne 128 Ventura 511 Yolo 282 Yuba 136
California vs nearby ranks
Adjacent states on the structurally deficient leaderboard (lower share = better)
States are ranked by share of bridges flagged structurally deficient — the FHWA classification for any span where deck, superstructure, or substructure carries a condition rating of 4 or below. Lower percentages indicate stronger maintenance funding and inspection follow-through. States here sit immediately above and below California on the same metric.
39
Ohio
4.54% top marginal rate
34
New Jersey
4.59% top marginal rate
06
California
4.60% top marginal rate
05
Arkansas
4.71% top marginal rate
53
Washington
4.81% top marginal rate
Bridges Needing Most Attention in California
Six lowest-condition bridges in California, ranked by composite NBI rating. Each is inspected at least every 24 months.
SPRING CREEK RD
PoorOver: FALL RIVER
0.5 MI N OF MCARTHUR RD, Shasta, CA
Built 1950 Load: 2.7 t ADT: 50
ORESTIMBA ROAD
PoorOver: CCID MAIN CANAL
0.1 MI E DRAPER RD, Stanislaus, CA
Built 1919 Load: 2.9 t ADT: 684
CLARK STREET
PoorOver: M.I.D. CANAL
0.1 MI WEST OF ROAD 26.0, Madera, CA
Built 1955 Load: 3.2 t ADT: 200
GULLING STREET
Structurally DeficientOver: MIDDLE FORK FEATHER RIV
0.2 MI S SH 70, Plumas, CA
Built 1954 Load: 3.2 t ADT: 10,046
AVENUE 10
PoorOver: COTTONWOOD CREEK
JUST E/O ROAD 23, Madera, CA
Built 1950 Load: 3.6 t ADT: 50
S BISHOP AVE
PoorOver: CRESCENT DITCH
0.64 MI S/O MT WHITNEY AV, Fresno, CA
Built 1950 Load: 3.9 t ADT: 125
All Bridges in California
ETSBRG HNYDEW RD
FairOver: MATTOLE RIVER
5.77 MI N/O THORNE RD, Humboldt, CA
Built 1928 Load: 16.8 t ADT: 200
HOWE CREEK ROAD
FairOver: HOWE CREEK
2.1 MI S/O BLUE SLIDE RD, Humboldt, CA
Built 2006 Load: 16.8 t ADT: 19
CARROLL CRK RD
FairOver: LOS ANGELES AQUEDUCT
0.4 MI W OF RTE 395 JCT, Inyo, CA
Built 1927 Load: 16.8 t ADT: 50
WALKER CREEK RD
FairOver: LOS ANGELES AQUEDUCT
0.5 MI W OF RTE 395 JCT, Inyo, CA
Built 1927 Load: 16.8 t ADT: 50
SUMMIT AVE
FairOver: HILLSIDE
1.4 MI INTRX LOVELL AVE, Marin, CA
Built 1980 Load: 16.8 t ADT: 257
GLENWOOD AVE
FairOver: ROSS CREEK
JUST N/O LAGUNITAS RD, Marin, CA
Built 1909 Load: 16.8 t ADT: 2,370
SPRUCE RD
FairOver: FAIRFAX CREEK
50 FT W OF ARROYO RD, Marin, CA
Built 1930 Load: 16.8 t ADT: 255
HORNITOS ROAD
FairOver: BEAR CREEK
3.6 MI N OF SR 140, Mariposa, CA
Built 1948 Load: 16.8 t ADT: 350
SCHOOL HOUSE ROAD
FairOver: OWENS CREEK
0.9 MI SE OF SR 140, Mariposa, CA
Built 1936 Load: 16.8 t ADT: 380
OLD HIGHWAY
FairOver: OWENS CREEK
0.3 MI EAST OF SR 140, Mariposa, CA
Built 1920 Load: 16.8 t ADT: 100
STATE ROUTE 1
FairOver: SOUTH FORK EEL RIVER
01-MEN-001-104.96, Mendocino, CA
Built 1944 Load: 16.8 t ADT: 700
OAK AVENUE
FairOver: SOUTH SLOUGH
0.8 MI E OF QUINLEY AVE, Merced, CA
Built 1935 Load: 16.8 t ADT: 128
CENTER AVENUE
FairOver: DELTA-MENDOTA CANAL
0.6 MI S ALMOND DRIVE, Merced, CA
Built 1950 Load: 16.8 t ADT: 660
MAINE ST
FairOver: BIDWELL CREEK
FORT BIDWELL, Modoc, CA
Built 1934 Load: 16.8 t ADT: 400
SALINAS ST
FairOver: TEMBLADERO SLOUGH
0.15 MI S SR 183, Monterey, CA
Built 1942 Load: 16.8 t ADT: 200
SAN JUAN GRADE RD
FairOver: GABILAN CREEK
1 MI N OF CRAZY HORSE RD, Monterey, CA
Built 1940 Load: 16.8 t ADT: 630
SAN JUAN GRADE RD
FairOver: N GABILAN CREEK
1.5 MI N CRAZY HORSE RD, Monterey, CA
Built 1940 Load: 16.8 t ADT: 630
MYRTLEDALE RD
FairOver: NAPA RIVER
0.2 MI SE TUBBS LANE, Napa, CA
Built 1930 Load: 16.8 t ADT: 671
MCCOURTNEY ROAD
FairOver: DRY CREEK
S/E OF S.H. 26, Nevada, CA
Built 1960 Load: 16.8 t ADT: 899
GLASSELL STREET
FairOver: SANTA ANA RIVER CHANNEL
0.3 MI S/O ROUTE 91 FWY, Orange, CA
Built 1963 Load: 16.8 t ADT: 22,000
CULVER DRIVE
FairOver: SAN DIEGO CREEK CHANNEL
0.2 MI S BARRANCA PKY, Orange, CA
Built 1971 Load: 16.8 t ADT: 47,700
PLACER HILLS RD
FairOver: BEAR RIVER CANAL
1.2 MI N OF I-80, Placer, CA
Built 1935 Load: 16.8 t ADT: 8,097
CROTHER RD
FairOver: WOOLEY CREEK
AT PLACER HILLS RD, Placer, CA
Built 1930 Load: 16.8 t ADT: 320
OPHIR ROAD
FairOver: AUBURN RAVINE
0.25 KM E JCT WISE RD, Placer, CA
Built 1925 Load: 16.8 t ADT: 4,403
BIG SPRINGS RD/A13
FairOver: HAMILTON BRANCH CREEK
0.1 MI WEST OF SR 147, Plumas, CA
Built 1955 Load: 16.8 t ADT: 1,300
BLARSDEN GRAGLE RD
FairOver: MIDDLE FORK FEATHER RIV
0.5 MI NORTH OF S.H.89, Plumas, CA
Built 1910 Load: 16.8 t ADT: 370
SLOAT-POPLAR VLY R
FairOver: MIDDLE FORK FEATHER RIV
AT SLOAT RD, Plumas, CA
Built 1959 Load: 16.8 t ADT: 140
KIEFER BLVD
FairOver: DEER CREEK
0.7 MI NW STATE RTE 16, Sacramento, CA
Built 1930 Load: 16.8 t ADT: 479
PANOCHE ROAD
FairOver: PANOCHE CREEK
2 MI W LITTLE PANOCHE RD, San Benito, CA
Built 1946 Load: 16.8 t ADT: 800
RAMONA AVE
FairOver: SAN ANTONIO CREEK CHAN
0.3 MI N CHINO HILLS PKWY, San Bernardino, CA
Built 1958 Load: 16.8 t ADT: 19,370
FOOTHILL BLVD
FairOver: SAN ANTONIO OVERFLOW
0.15 MI E MONTE VISTA AVE, San Bernardino, CA
Built 1914 Load: 16.8 t ADT: 21,500
EL CAMINO REAL
FairOver: SAN DIEGUITO RIVER
0.3MI S/O VIA DE LA VALLE, San Diego, CA
Built 1940 Load: 16.8 t ADT: 14,500
TREASURE ISLAND RD
FairOver: SIDEHILL
JNO TREAS ISLAND SHV #8, San Francisco, CA
Built 1938 Load: 16.8 t ADT: 3,000
LAMMERS ROAD
FairOver: DELTA-MENDOTA CANAL
0.8 MI S VALPICO ROAD, San Joaquin, CA
Built 1950 Load: 16.8 t ADT: 1,439
HI MOUNTAIN RD
FairOver: ARROYO GRANDE CREEK
1.5 MI E LOPEZ CYN RD, San Luis Obispo, CA
Built 1965 Load: 16.8 t ADT: 50
CAYUCOS CR RD
FairOver: CAYUCOS CREEK
THUNDER CANYON RD, San Luis Obispo, CA
Built 1928 Load: 16.8 t ADT: 276
THOMPSON RD
FairOver: DELEISSIGUES CREEK
0.75 MI NW TEFFT ST, San Luis Obispo, CA
Built 1916 Load: 16.8 t ADT: 5,834
BAYSHORE BLVD
FairOver: RECREATIONAL TRAIL
0.2 MI. N. OF VALLEY DR., San Mateo, CA
Built 1928 Load: 16.8 t ADT: 35,000
DRAKE AVE
FairOver: SANCHEZ CREEK
EAST OF CARMELITA, San Mateo, CA
Built 1930 Load: 16.8 t ADT: 100
US HIGHWAY 101 NB
FairOver: SAN ANTONIO CREEK
05-SB-101-67.09, Santa Barbara, CA
Built 1916 Load: 16.8 t ADT: 14,500
LAS CANOAS RD
FairOver: RATTLESNAKE CANYON
1.2 MI N/E MISSION CYN RD, Santa Barbara, CA
Built 1919 Load: 16.8 t ADT: 220
4 TH ST
FairOver: CARPINTERIA CREEK
IN CARP. ST. PARK, Santa Barbara, CA
Built 1967 Load: 16.8 t ADT: 200
PIERCE RD
FairOver: CALABAZAS CREEK
0.4 MI S/W SURREY LN, Santa Clara, CA
Built 1935 Load: 16.8 t ADT: 1,529
ALAMITOS ROAD
FairOver: HERBERT CREEK
0.7 MI W OF HICKS RD, Santa Clara, CA
Built 1956 Load: 16.8 t ADT: 170
OLD PAGE MILL ROAD
FairOver: MATADERO CREEK
.5 MI N/O I-280, Santa Clara, CA
Built 1918 Load: 16.8 t ADT: 250
OLD PAGE MILL ROAD
FairOver: MATADERO CREEK
0.6 MI N/O I-280, Santa Clara, CA
Built 1918 Load: 16.8 t ADT: 205
APTOS CREEK ROAD
FairOver: APTOS CREEK
FOREST OF NISENE MARKS SP, Santa Cruz, CA
Built 1955 Load: 16.8 t ADT: 200
WILD PLUM ROAD
FairOver: NORTH FORK YUBA RIVER
0.7 MI EAST OF SR 49, Sierra, CA
Built 1963 Load: 16.8 t ADT: 200
OLD REDWOOD HWY
FairOver: SOTOYOME CREEK
0.7 MI SE EASTSIDE RD, Sonoma, CA
Built 1913 Load: 16.8 t ADT: 5,900
STWRT PT-SKGG SPRG
FairOver: SHINGLE MILL CR (OHLSON)
14.3 MI SR 1 VIA ANPLS RD, Sonoma, CA
Built 1935 Load: 16.8 t ADT: 300
Showing 8,751-8,800 of 27,040 bridges
Data sourced from the FHWA National Bridge Inventory (NBI), latest released cycle. See our methodology for details. Retrieved and formatted by PlainBridges Editorial.
Disclaimer: This information is provided for informational purposes only and does not constitute professional advice. Data is sourced from the FHWA National Bridge Inventory (NBI). A "structurally deficient" rating is a repair-priority signal, not a closure or unsafe-to-cross designation. Consult a qualified civil engineer before making decisions based on this data.
Understanding Bridge Conditions
How FHWA rates bridge condition on a 0-9 scale.
Check Your Daily Bridges
How to look up bridge condition data for bridges on your route.
Read our methodology — how this data is sourced, computed, and verified.