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
STONY CREEK ROAD
FairOver: JACKSON CREEK
5.4 MI NE/O LANCHA PL RD, Amador, CA
Built 1955 Load: 38.6 t ADT: 1,023
BELL RD
FairOver: MUD CREEK
0.5 MI E OF MERIDIAN RD, Butte, CA
Built 1962 Load: 38.6 t ADT: 219
PALERMO-HONCUT HWY
FairOver: WYANDOTTE CREEK
0.6 MI N OF COX LANE, Butte, CA
Built 1963 Load: 38.6 t ADT: 1,611
MILTON RD
FairOver: CALAVERAS RIVER
0.8 M E. OF JENNY LIND RD, Calaveras, CA
Built 1979 Load: 38.6 t ADT: 966
STATE ROUTE 86 SB
FairOver: TRIFOLIUM CANAL
11-IMP-086-R34.80, Imperial, CA
Built 1997 Load: 38.6 t ADT: 7,350
FRAZIER MTN ROAD
FairOver: CUDDY CREEK
0.7 MI W OF MONTEREY TRL, Kern, CA
Built 1970 Load: 38.6 t ADT: 5,500
SCOTTS VALLEY ROAD
FairOver: SCOTTS CREEK
3.0 MI E OF HWY 29, Lake, CA
Built 1960 Load: 38.6 t ADT: 2,140
QUAIL TRAIL
FairOver: WOLF CREEK
IN SPRING VALLEY LAKE DEV, Lake, CA
Built 1967 Load: 38.6 t ADT: 36
KONOCTI RD
FairOver: COLE CREEK
1/4 MI E MAIN ST, Lake, CA
Built 1987 Load: 38.6 t ADT: 1,155
INTERSTATE 5
FairOver: NEWELL STREET
07-LA-005-22.26-LA, Los Angeles, CA
Built 1961 Load: 38.6 t ADT: 283,000
STATE ROUTE 134
FairOver: VERDUGO RD
07-LA-134-R8.23-GNDL, Los Angeles, CA
Built 1968 Load: 38.6 t ADT: 226,000
INTERSTATE 210
FairOver: SAN GABRIEL RIVER
07-LA-210-R36.82-IRW, Los Angeles, CA
Built 1968 Load: 38.6 t ADT: 266,000
ALAMEDA ST
FairOver: DOMINGUEZ CHAN
0.8MI S/O I-405 FWY, Los Angeles, CA
Built 1959 Load: 38.6 t ADT: 30,800
ANGELES FOREST HWY
FairOver: ANGELES FOREST HWY OH SP
0.1MI S/O SIERRA HWY, Los Angeles, CA
Built 1961 Load: 38.6 t ADT: 1,687
OLD TPNG CN RD N/C
FairOver: OLD TOPANGA CRK
400FT N/O TOPANGA SKY DR, Los Angeles, CA
Built 1928 Load: 38.6 t ADT: 2,300
CHESEBORO RD
FairOver: CALIFORNIA AQUEDUCT
1.5MI S/O SR-138 HWY, Los Angeles, CA
Built 1968 Load: 38.6 t ADT: 918
AVE K
FairOver: LITTLE ROCK CRK
3.0MI W/O 50TH ST E, Los Angeles, CA
Built 1985 Load: 38.6 t ADT: 2,727
FISH ROCK RD
FairOver: PARDALOE CREEK
5.30 MI W SR 128, Mendocino, CA
Built 1960 Load: 38.6 t ADT: 165
COUNTY ROAD 60
FairOver: WESTSIDE CANAL
3.6 MI W OF CR 189, Modoc, CA
Built 1985 Load: 38.6 t ADT: 150
GRIFFIN ROAD
FairOver: N FK LEWIS CREEK
0.1 MI NE OF SH 198, Monterey, CA
Built 1950 Load: 38.6 t ADT: 50
TUSTIN STREET
FairOver: SANTIAGO CREEK CHANNEL
0.3 MI. N/O ROUTE 22 FWY, Orange, CA
Built 1941 Load: 38.6 t ADT: 27,600
EL TORO ROAD
FairOver: ALISO CREEK
1.0 MI. NE/O TRABUCO ROAD, Orange, CA
Built 1975 Load: 38.6 t ADT: 42,000
DIAMOND MOUNTAN RD
FairOver: E BRANCH LIGHTS CREEK
12.6 MI NE GRNVLE-BKWT RD, Plumas, CA
Built 1954 Load: 38.6 t ADT: 80
GRNVLE RND VLY RD
FairOver: NORTH CANYON CREEK
0.8 MI S OF SH 89, Plumas, CA
Built 1957 Load: 38.6 t ADT: 110
INTERSTATE 10 WB
FairOver: MILLARD CANYON WASH
08-RIV-010-R20.15, Riverside, CA
Built 1966 Load: 38.6 t ADT: 45,500
PALISADES DRIVE
FairOver: WARDLOW WASH
0.9 MI W/O SERFAS CLUB DR, Riverside, CA
Built 1939 Load: 38.6 t ADT: 2,000
STATE ROUTE 66
FairOver: UP RR
08-SBD-066-20.83-SBD, San Bernardino, CA
Built 1967 Load: 38.6 t ADT: 19,700
INTERSTATE 40 WB
FairOver: OLD DAD WASH
08-SBD-040-R74.51, San Bernardino, CA
Built 1972 Load: 38.6 t ADT: 16,500
INTERSTATE 5
FairOver: AGUA HEDIONDA LAGOON
11-SD-005-R48.68-CBD, San Diego, CA
Built 1953 Load: 38.6 t ADT: 222,000
SB-15 OFFRAMP
FairOver: MURPHY CREEK
11-SD-015-R6.88-SD, San Diego, CA
Built 1967 Load: 38.6 t ADT: 18,100
99 FRONTAGE RD E
FairOver: PIXLEY SLOUGH
0.6 MI S ARMSTRONG RD, San Joaquin, CA
Built 1964 Load: 38.6 t ADT: 2,155
STATE ROUTE 152
FairOver: LLAGAS CREEK
04-SCL-152-11.33, Santa Clara, CA
Built 1958 Load: 38.6 t ADT: 22,300
STEEL BRIDGE ROAD
FairOver: SOUTH COW CREEK
0.9 MI SE OF BATEMAN RD., Shasta, CA
Built 1980 Load: 38.6 t ADT: 10
MOFFETT CREEK RD
FairOver: MOFFETT CREEK
4.4 MI E SR 3, Siskiyou, CA
Built 1975 Load: 38.6 t ADT: 145
PADDON ROAD
FairOver: PUTAH SOUTH CANAL
0.3 MI N ROBINSON ROAD, Solano, CA
Built 1955 Load: 38.6 t ADT: 241
MERIDIAN RD
FairOver: SWEENEY CREEK
1.8 MI N MIDWAY RD, Solano, CA
Built 1972 Load: 38.6 t ADT: 877
KENILWORTH AVE
FairOver: SONOMA CREEK
0.1 MI W MERWIN AVE, Sonoma, CA
Built 1971 Load: 38.6 t ADT: 100
STATE ROUTE 99
FairOver: CERES MAIN CANAL
10-STA-099-R10.03, Stanislaus, CA
Built 1941 Load: 38.6 t ADT: 96,000
RUTH DAM ROAD
FairOver: RUTH DAM
100' W MAD RIVER ROAD, Trinity, CA
Built 1972 Load: 38.6 t ADT: 30
FOOTHILL ROAD
FairOver: SINBAD CREEK
AT KILKARE RD, Alameda, CA
Built 1948 Load: 38.9 t ADT: 1,000
FALLON ROAD
FairOver: KOBOLD CREEK
0.3 MI SE OF TASSAJARA RD, Alameda, CA
Built 2010 Load: 38.9 t ADT: 4,000
VIKING DR
FairOver: GRAYSON CREEK
AT RUTH DR, Contra Costa, CA
Built 1960 Load: 38.9 t ADT: 8,300
MT AUKUM RD
FairOver: CLEAR CREEK
.2 MI S/O PLEASANT VALY R, El Dorado, CA
Built 1967 Load: 38.9 t ADT: 2,959
MILLERTON ROAD
FairOver: FRIANT-KERN CANAL
0.5 MI E OF N FORK RD, Fresno, CA
Built 1979 Load: 38.9 t ADT: 7,400
U.S. HIGHWAY 101
FairOver: PATRICKS POINT DR
01-HUM-101-R106.07, Humboldt, CA
Built 1970 Load: 38.9 t ADT: 4,200
STATE ROUTE 99
FairOver: POSO CREEK
06-KER-099-44.54, Kern, CA
Built 1951 Load: 38.9 t ADT: 59,000
FRAZIER MTN ROAD
FairOver: CUDDY CREEK
0.5 MI E OF MONTEREY TRL, Kern, CA
Built 1970 Load: 38.9 t ADT: 6,300
ROAD M1
FairOver: BENMORE CREEK
9 MI. NE OF POTTER VALLEY, Lake, CA
Built 1970 Load: 38.9 t ADT: 300
WILLOW ST
FairOver: W ACCESS RD UC
0.5MI W/O I-605 FWY, Los Angeles, CA
Built 1962 Load: 38.9 t ADT: 28,620
LOWER AZUSA RD
FairOver: RIO HONDO
1.0MI W/O PECK RD, Los Angeles, CA
Built 1959 Load: 38.9 t ADT: 30,816
Showing 15,701-15,750 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.