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
EL CAMPO RD
FairOver: LOS BERROS CREEK
0.1 MI NE LS BRS-ARY G RD, San Luis Obispo, CA
Built 1956 Load: 26.2 t ADT: 1,161
DEL RIO RD
FairOver: GRAVES CREEK
0.40 MI W OF SR 101, San Luis Obispo, CA
Built 1957 Load: 26.2 t ADT: 3,500
NEGRANTI RD
FairOver: TORO CREEK
2.5 MI NE OF SR 1, San Luis Obispo, CA
Built 1965 Load: 26.2 t ADT: 30
FAIR OAKS BLVD
FairOver: ARROYO GRANDE CREEK
ARROYO GRANDE, San Luis Obispo, CA
Built 1977 Load: 26.2 t ADT: 8,945
STATE ROUTE 9
FairOver: LOS GATOS CREEK
04-SCL-009-11.30-LGTS, Santa Clara, CA
Built 1956 Load: 26.2 t ADT: 35,000
MAGDALENA COURT
FairOver: HALE CREEK
0.02 MI W/O MAGDALENA AVE, Santa Clara, CA
Built 1961 Load: 26.2 t ADT: 70
WATER STREET
FairOver: BRANCIFORTE CREEK
AT MARKET STREET, Santa Cruz, CA
Built 1924 Load: 26.2 t ADT: 100,000
PARK AVENUE
FairOver: BURNEY CREEK
0.15 MI E TAMARACK AVE, Shasta, CA
Built 1958 Load: 26.2 t ADT: 980
LEMON CANYON ROAD
FairOver: LEMON CREEK
1.4 MI E OF SR 49 NR SIE, Sierra, CA
Built 1965 Load: 26.2 t ADT: 25
INTERSTATE 5 SB
FairOver: DIABLO GRANDE PKWY
10-STA-005-15.86, Stanislaus, CA
Built 1967 Load: 26.2 t ADT: 20,500
ROEDING ROAD
FairOver: T.I.D. CERES MAIN CANAL
80' W/O MOORE ROAD, Stanislaus, CA
Built 1900 Load: 26.2 t ADT: 2,500
STATE ROUTE 36
FairOver: MILL CREEK
02-TEH-036-91.46, Tehama, CA
Built 1966 Load: 26.2 t ADT: 1,100
JOHNSON RD
FairOver: REEDS CREEK
2.4 MI E/O MASTEN RD, Tehama, CA
Built 1960 Load: 26.2 t ADT: 200
CAMPO RD
FairOver: OAT CREEK
0.65 MI E SAN BENITO AVE, Tehama, CA
Built 1963 Load: 26.2 t ADT: 200
WILDWOOD-MAD RIVER
FairOver: E FK SO FK TRINITY RIVER
NO DATA ENTERED, Trinity, CA
Built 1980 Load: 26.2 t ADT: 50
STATE ROUTE 198
FairOver: SJVR
06-TUL-198-R17.87, Tulare, CA
Built 1965 Load: 26.2 t ADT: 19,000
ROAD 132
FairOver: ELK BAYOU
0.25 MI N OF A180, Tulare, CA
Built 1953 Load: 26.2 t ADT: 200
STATE ROUTE 126 WB
FairOver: TWELFTH STREET
07-VEN-126-R12.29-SPA, Ventura, CA
Built 1965 Load: 26.2 t ADT: 18,250
STATE ROUTE 126
FairOver: ELLSWORTH BARRANCA
07-VEN-126-R6.43, Ventura, CA
Built 1965 Load: 26.2 t ADT: 25,000
INTERSTATE 5
FairOver: BUCKEYE CREEK
03-YOL-005-R28.59, Yolo, CA
Built 1968 Load: 26.2 t ADT: 15,000
STINSON BEACH ROAD
FairOver: EASKOOT CREEK
West from US Route 101 on, Marin, CA
Built 1959 Load: 26.3 t ADT: 150
VALLEY LOOP ROAD
FairOver: MERCED RIVER
14.2 miles east from El P, Mariposa, CA
Built 1933 Load: 26.3 t ADT: 3,416
CALAVERAS RD
FairOver: SAN ANTONIO CREEK
0.9 MI SE/O I-680, Alameda, CA
Built 1932 Load: 26.6 t ADT: 1,920
STATE ROUTE 70
FairOver: THERMALITO CANAL
03-BUT-070-16.31, Butte, CA
Built 1963 Load: 26.6 t ADT: 19,000
CLIFTON COURT ROAD
FairOver: ITALIAN SLOUGH
0.5 MI E BYRON HIGHWAY, Contra Costa, CA
Built 1950 Load: 26.6 t ADT: 100
SR 33 (DERRICK AV)
FairOver: CALIFORNIA AQUEDUCT
06-FRE-033-46.78, Fresno, CA
Built 1967 Load: 26.6 t ADT: 1,700
MAXSON ROAD
FairOver: WATTS CREEK
1.5 MI E WATTS VALLEY RD, Fresno, CA
Built 1925 Load: 26.6 t ADT: 100
N PIEDRA RD
FairOver: BYRD SLOUGH
1.95 MI S WELDON AVE, Fresno, CA
Built 1965 Load: 26.6 t ADT: 1,700
US HIGHWAY 101 NB
FairOver: PALMER BLVD
01-HUM-101-62.23, Humboldt, CA
Built 1958 Load: 26.6 t ADT: 22,000
FISHER ROAD
FairOver: RESERVATION MAIN DRAIN
0.4 MI N/O ROSS RD, Imperial, CA
Built 1940 Load: 26.6 t ADT: 51
STATE ROUTE 91
FairOver: UP RR
07-LA-091-R16.54-BFL, Los Angeles, CA
Built 1968 Load: 26.6 t ADT: 242,000
FOOTHILL BLVD
FairOver: SANTA ANITA WASH
0.2MI E/O SANTA ANITA AVE, Los Angeles, CA
Built 1928 Load: 26.6 t ADT: 27,242
GLENOAKS BLVD
FairOver: PACOIMA WASH
0.4MI E/O MACLAY AVE, Los Angeles, CA
Built 1953 Load: 26.6 t ADT: 21,632
STATE ROUTE 253
FairOver: ANDERSON CREEK
01-MEN-253-0.54, Mendocino, CA
Built 1965 Load: 26.6 t ADT: 2,300
STATE ROUTE 162
FairOver: BLOODY RUN CREEK
01-MEN-162-7.13, Mendocino, CA
Built 1959 Load: 26.6 t ADT: 860
REEVES CANYON ROAD
FairOver: MILL CREEK
2.2 MI WEST OF US 101, Mendocino, CA
Built 2012 Load: 26.6 t ADT: 100
STATE ROUTE 140
FairOver: OUTSIDE CANAL
10-MER-140-2.30, Merced, CA
Built 1968 Load: 26.6 t ADT: 1,175
ELLIOT AVENUE
FairOver: CANAL CREEK
0.9 MI E BUHACH RD, Merced, CA
Built 1973 Load: 26.6 t ADT: 257
SHAW AVENUE
FairOver: ESCALADIAN CANAL
0.25 MI E SHAFFER RD, Merced, CA
Built 1964 Load: 26.6 t ADT: 100
CR 64/JESS VALLEY
FairOver: SOUTH FORK PIT RIVER
3.5 MI E S.R. 395, Modoc, CA
Built 1972 Load: 26.6 t ADT: 315
STATE ROUTE 1
FairOver: CASTRO CANYON
05-MON-001-43.12, Monterey, CA
Built 1937 Load: 26.6 t ADT: 3,150
STATE ROUTE 49
FairOver: BEAR RIVER
03-PLA-049-11.35, Placer, CA
Built 1961 Load: 26.6 t ADT: 28,000
N. SUNRISE AVENUE
FairOver: MINERS RAVINE
0.1 M S OF E ROSEVILL PKY, Placer, CA
Built 1998 Load: 26.6 t ADT: 16,784
INTERSTATE 15 NB
FairOver: WARM SPRINGS CREEK
08-RIV-015-7.78-TMCA, Riverside, CA
Built 1968 Load: 26.6 t ADT: 64,750
INTERSTATE 10 WB
FairOver: SADDLE GULCH
08-RIV-010-R79.58, Riverside, CA
Built 1965 Load: 26.6 t ADT: 11,250
STATE ROUTE 371
FairOver: CAHUILLA CREEK
08-RIV-371-70.53, Riverside, CA
Built 1961 Load: 26.6 t ADT: 3,950
ROUTE 74
FairOver: LEACH CANYON CHANNEL
08-RIV-074-13.23-ESN, Riverside, CA
Built 1977 Load: 26.6 t ADT: 29,500
AUTO CENTER DRIVE
FairOver: SAN JACINTO RIVER
0.2 MI NW/O RAILRD CYN RD, Riverside, CA
Built 1957 Load: 26.6 t ADT: 6,507
PANOCHE ROAD
FairOver: PANOCHE CREEK
EAST NEW IDRIA RD, San Benito, CA
Built 1970 Load: 26.6 t ADT: 800
NAT TRAILS HWY
FairOver: BNSF RY & AMTRAK
0.26 MI E OF GOFFS RD, San Bernardino, CA
Built 1931 Load: 26.6 t ADT: 502
Showing 11,051-11,100 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.