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
MOORPARK ROAD
GoodOver: ARROYO CONEJO
0.1 MI N/O THOK BLVD, Ventura, CA
Built 1939 Load: 18.1 t ADT: 30,050
FOOTHILL RD
GoodOver: ELLSWORTH BARRANCA
4.1 MI W OF PECK RD, Ventura, CA
Built 1915 Load: 18.1 t ADT: 1,500
SOUTH WARNER ROAD
GoodOver: EAST CREEK
2.5 MI W OF PATTERSON, Modoc, CA
Built 1958 Load: 18.2 t ADT: 50
STATE ROUTE 185
GoodOver: SAN LORENZO CREEK
04-ALA-185-1.61, Alameda, CA
Built 1960 Load: 18.5 t ADT: 18,000
WINDING ROAD
GoodOver: CAMP CREEK
NO DATA ENTERED, El Dorado, CA
Built 1976 Load: 18.5 t ADT: 50
NO DATA ENTERED
GoodOver: NO DATA ENTERED
NO DATA ENTERED, Humboldt, CA
Built 1957 Load: 18.5 t ADT: 50
Pruett Rd/Railroad
GoodOver: All-American Canal
Within City of Calexico, Imperial, CA
Built 1938 Load: 18.5 t ADT: 400
STATE ROUTE 14 SB
GoodOver: SANTIAGO RD
07-LA-014-R50.75, Los Angeles, CA
Built 1965 Load: 18.5 t ADT: 48,500
STATE ROUTE 14 NB
GoodOver: SANTIAGO RD
07-LA-014-R50.75, Los Angeles, CA
Built 1965 Load: 18.5 t ADT: 48,500
MAGNOLIA BLVD F RD
GoodOver: BURBANK WESTERN CHAN
0.1MI W/O I-5 FWY, Los Angeles, CA
Built 1949 Load: 18.5 t ADT: 408
WASHINGTON BLVD
GoodOver: ARROYO SECO CHAN
0.8MI W/O FAIR OAKS AVE, Los Angeles, CA
Built 1939 Load: 18.5 t ADT: 1,262
WOODLAND DR
GoodOver: SIERRA MADRE WASH
1.5MI N/O I-10 FWY, Los Angeles, CA
Built 1928 Load: 18.5 t ADT: 116
LAS ROCAS DR
GoodOver: SIERRA MADRE WASH
0.6MI W/O SANTA ANITA AVE, Los Angeles, CA
Built 1928 Load: 18.5 t ADT: 378
RELIZ CYN RD
GoodOver: RELIZ CREEK
3.5 MI SOUTH OF ELM AVE, Monterey, CA
Built 1953 Load: 18.5 t ADT: 150
KEARNY VILLA RD
GoodOver: SAN CLEMENTE CANYON
0.92MI N/O SR163, San Diego, CA
Built 1949 Load: 18.5 t ADT: 23,560
CORD ROAD
GoodOver: BEAR CREEK BRANCH
0.2 MI S OF SR 12, San Joaquin, CA
Built 1978 Load: 18.5 t ADT: 50
LOWER GAS POINT RD
GoodOver: BRAD CREEK
3.4 MI N JCT GAS POINT R, Shasta, CA
Built 1972 Load: 18.5 t ADT: 10
SOUTH RUSSIAN ROAD
GoodOver: RUSSIAN CREEK
SAWYERS BAR, Siskiyou, CA
Built 1966 Load: 18.5 t ADT: 50
PETALUMA BLVD N
GoodOver: PETALUMA RIVER
0.2 MI S JCT US 101, Sonoma, CA
Built 1925 Load: 18.5 t ADT: 4,200
OLD HWY 99 W
GoodOver: OAT CREEK
0.1 MI N OF FLORES AVE, Tehama, CA
Built 1940 Load: 18.5 t ADT: 4,000
CAPAY ROAD
GoodOver: TEHAMA-COLUSA CANAL
1.3 MI E OF RD 99 W, Tehama, CA
Built 1960 Load: 18.5 t ADT: 400
TULE CREEK ROAD
GoodOver: SALT CREEK
0.8 MI WEST OF S.R. 3, Trinity, CA
Built 1947 Load: 18.5 t ADT: 670
US 50-RAMP G15-WB
GoodOver: DREVER STREET
03-YOL-050-2.65-WSAC, Yolo, CA
Built 1966 Load: 18.5 t ADT: 8,400
Canal Service Road
GoodOver: Carballo Wash Overchute
6 m north of Yuma, AZ, Imperial, CA
Built 1965 Load: 18.6 t ADT: 50
STATE ROUTE 299
GoodOver: MAD RIVER
01-HUM-299-R1.55, Humboldt, CA
Built 1948 Load: 18.8 t ADT: 4,775
ZERKER RD
GoodOver: FRIANT-KERN CANAL
2.2 MI N 7TH STANDARD RD, Kern, CA
Built 1950 Load: 18.8 t ADT: 1,650
E10-S57&N57 CONN
GoodOver: KELLOGG DR
07-LA-010-42.10-POM, Los Angeles, CA
Built 1972 Load: 18.8 t ADT: 8,200
ROAD 36
GoodOver: LITTLE DRY CREEK
0.25 MI N OF AVE 14, Madera, CA
Built 1973 Load: 18.8 t ADT: 1,000
STATE ROUTE 140
GoodOver: MERCED RIVER
10-MPA-140-49.85, Mariposa, CA
Built 1926 Load: 18.8 t ADT: 1,400
TRABUCO CANYON RD.
GoodOver: TRABUCO CREEK
1.4 MI N/O SNTA MARGARITA, Orange, CA
Built 1980 Load: 18.8 t ADT: 3,000
WISE RD
GoodOver: SOUTH SUTTER CANAL
2.0 MI W DOWD RD, Placer, CA
Built 1972 Load: 18.8 t ADT: 95
MOORE RD
GoodOver: SOUTH SUTTER CANAL
1.9 MI E BREWER RD, Placer, CA
Built 1972 Load: 18.8 t ADT: 721
INTERSTATE 10
GoodOver: SAN GORGONIO WASH
08-RIV-010-R16.14-BAN, Riverside, CA
Built 1940 Load: 18.8 t ADT: 111,000
WYNOLA ROAD
GoodOver: BANNER CREEK
25 FT W/O SR 78, San Diego, CA
Built 1944 Load: 18.8 t ADT: 138
STATE ROUTE 9
GoodOver: SARATOGA CREEK
04-SCL-009-6.70-SAR, Santa Clara, CA
Built 1917 Load: 18.8 t ADT: 10,350
BENTON ST
GoodOver: SARATOGA CREEK
W OF SAN TOMAS EXPWY, Santa Clara, CA
Built 1960 Load: 18.8 t ADT: 5,200
PUTAH CREEK RD
GoodOver: PUTAH SOUTH CANAL
3.0 MI W WINTERS RD, Solano, CA
Built 1957 Load: 18.8 t ADT: 650
ARNOLD DR
GoodOver: SONOMA CR (GLEN ELLEN)
LONDON RANCH RD, Sonoma, CA
Built 1939 Load: 18.8 t ADT: 6,300
DEL PUERTO CYN RD
GoodOver: WASHINGTON CANYON CREEK
9.6 MI W OF I-5, Stanislaus, CA
Built 1960 Load: 18.8 t ADT: 96
BUTTE HOUSE ROAD
GoodOver: WADSWORTH CANAL
0.25 MI E OF HUMPHREY RD., Sutter, CA
Built 1999 Load: 18.8 t ADT: 3,866
WALNUT ROAD
GoodOver: KOPTA SLOUGH
0.3 MI N ORANGEWOOD RD, Tehama, CA
Built 1966 Load: 18.8 t ADT: 200
AVENUE 56
GoodOver: FRIANT-KERN CANAL
0.45 MI WEST OF ROAD 192, Tulare, CA
Built 1949 Load: 18.8 t ADT: 665
AVENUE 24
GoodOver: FRIANT-KERN CANAL
0.05 MI WEST OF ROAD 184, Tulare, CA
Built 1950 Load: 18.8 t ADT: 150
STATE ROUTE 65
GoodOver: DRY CREEK
03-YUB-065-2.21, Yuba, CA
Built 1915 Load: 18.8 t ADT: 22,000
STATE ROUTE 254
GoodOver: ELK CREEK
01-HUM-254-10.43, Humboldt, CA
Built 1940 Load: 19.1 t ADT: 565
FIELDBROOK RD
GoodOver: SQUAW CREEK
2.9 MI N/E OF RTE 299, Humboldt, CA
Built 1951 Load: 19.1 t ADT: 1,173
STATE ROUTE 78
GoodOver: CONDIT DITCH
11-IMP-078-8.23, Imperial, CA
Built 1949 Load: 19.1 t ADT: 1,200
HANAWALT AVE
GoodOver: FRIANT-KERN CANAL
0.15 MI EAST OF DRIVER RD, Kern, CA
Built 1948 Load: 19.1 t ADT: 200
STATE ROUTE 2
GoodOver: FERN CANYON
07-LA-002-29.55, Los Angeles, CA
Built 1931 Load: 19.1 t ADT: 3,700
ATLANTIC TO N71O
GoodOver: LOS ANGELES RIVER
07-LA-710-13.09-LBCH, Los Angeles, CA
Built 1971 Load: 19.1 t ADT: 5,250
Showing 17,651-17,700 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.