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
EB 4 OFF-RAMP
FairOver: MORMON SLOUGH
10-SJ-004-R16.20-STKN, San Joaquin, CA
Built 1972 Load: 34.3 t ADT: 4,700
TRACY BOULEVARD
FairOver: MIDDLE RIVER
2 MI SOUTH OF S.H. 4, San Joaquin, CA
Built 1977 Load: 34.3 t ADT: 1,347
SHELTON ROAD
FairOver: CALAVERAS RIVER
0.6 MI S WIMER RD, San Joaquin, CA
Built 1976 Load: 34.3 t ADT: 122
SUTTER STREET
FairOver: MORMON SLOUGH
0.5 MI N CHARTER WAY, San Joaquin, CA
Built 1915 Load: 34.3 t ADT: 2,700
MAIN STREET
FairOver: STOCKTON DIVERTING CANAL
JUST NORTH GILLIS ROAD, San Joaquin, CA
Built 1969 Load: 34.3 t ADT: 4,729
STATE ROUTE 166
FairOver: HUASNA RIVER
05-SLO-166-16.45, San Luis Obispo, CA
Built 1959 Load: 34.3 t ADT: 2,600
SNEATH LN
FairOver: HILLSIDE
E CLAREMONT DR, San Mateo, CA
Built 1975 Load: 34.3 t ADT: 13,000
SNEATH LN
FairOver: HILLSIDE
EAST CLAREMONT DR, San Mateo, CA
Built 1975 Load: 34.3 t ADT: 13,000
STATE ROUTE 1
FairOver: UP RR & AMTRAK
05-SB-001-46.45, Santa Barbara, CA
Built 1948 Load: 34.3 t ADT: 2,200
STATE ROUTE 1 NB
FairOver: SAN ANTONIO CREEK
05-SB-001-M33.10, Santa Barbara, CA
Built 1966 Load: 34.3 t ADT: 6,900
PARADISE ROAD
FairOver: LOS LAURELES CREEK
0.8 MI N SR 154, Santa Barbara, CA
Built 1970 Load: 34.3 t ADT: 1,760
CASTILLO STREET
FairOver: MISSION CREEK
AT CANON PERDIDO, Santa Barbara, CA
Built 1963 Load: 34.3 t ADT: 3,750
SB US HIGHWAY 101
FairOver: CARNADERO CREEK
04-SCL-101-4.20, Santa Clara, CA
Built 1949 Load: 34.3 t ADT: 26,000
NB US HIGHWAY 101
FairOver: CARNADERO CREEK
04-SCL-101-4.20, Santa Clara, CA
Built 1931 Load: 34.3 t ADT: 26,000
BUKER ROAD
FairOver: KELSEY CREEK
SCOTT BAR, Siskiyou, CA
Built 1984 Load: 34.3 t ADT: 15
INTERSTATE 505 NB
FairOver: ALLENDALE RD
04-SOL-505-R5.57, Solano, CA
Built 1974 Load: 34.3 t ADT: 11,400
VALLEY FORD RD
FairOver: AMERICANO CREEK
3.6 MI E JCT SR 1, Sonoma, CA
Built 1985 Load: 34.3 t ADT: 3,000
SALMON CREEK ROAD
FairOver: SALMON CREEK
0.1 MI NW BODEGA HWY, Sonoma, CA
Built 1958 Load: 34.3 t ADT: 500
MILL CREEK RD
FairOver: MILL CREEK
3.1 MI W OF WESTSIDE RD, Sonoma, CA
Built 1957 Load: 34.3 t ADT: 600
GEYSERS ROAD
FairOver: HILLSIDE
1.0 MI E/O BIG SULPHUR CR, Sonoma, CA
Built 2006 Load: 34.3 t ADT: 150
N99-MITCHELL RD OF
FairOver: CERES MAIN CANAL
10-STA-099-R10.03, Stanislaus, CA
Built 1965 Load: 34.3 t ADT: 7,400
NEEDHAM ROAD
FairOver: DELTA-MENDOTA CANAL
0.15 MI W OF STARK ROAD, Stanislaus, CA
Built 1963 Load: 34.3 t ADT: 67
WILDWOOD ROAD
FairOver: HAYFORK CREEK
3.7 MI SOUTH OF S.R. 3, Trinity, CA
Built 1945 Load: 34.3 t ADT: 330
STATE ROUTE 118
FairOver: TAPO CANYON RD
07-VEN-118-R27.30-SIMV, Ventura, CA
Built 1969 Load: 34.3 t ADT: 152,000
COUNTY ROAD 6
FairOver: TEHAMA-COLUSA CANAL
0.9 MI W/O I-5, Yolo, CA
Built 1978 Load: 34.3 t ADT: 390
GENERALS HIGHWAY (
FairOver: MARBLE FORK KAWEAH RIVER
3.7 MI. NORTH OF ASH MOU, Tulare, CA
Built 1968 Load: 34.5 t ADT: 1,493
VASCO ROAD
FairOver: UP RR,ACE, FLOOD CONTROL
0.9 MI S OF I-580, Alameda, CA
Built 1987 Load: 34.7 t ADT: 19,500
DURNEL RD
FairOver: NORTH FORK HAMLIN SLOUGH
1.75 MI N OF NELSON RD, Butte, CA
Built 1968 Load: 34.7 t ADT: 48
CHEROKEE RD
FairOver: THERMALITO CANAL
0.4 MI NE TBLE MTN BL, Butte, CA
Built 1966 Load: 34.7 t ADT: 775
WALKER ROAD
FairOver: CLARKS CREEK
0.2 MI NORTH OF RTE 199, Del Norte, CA
Built 2002 Load: 34.7 t ADT: 25
S DE WOLF AVE
FairOver: FOWLER SWITCH CANAL
AT DINUBA AVE, Fresno, CA
Built 1938 Load: 34.7 t ADT: 800
DUNLAP ROAD
FairOver: MILL CREEK
0.5 MI S/O MILLWOOD RD, Fresno, CA
Built 1973 Load: 34.7 t ADT: 600
BAYLISS RD
FairOver: WALKER CREEK
1.1 MI E OF I-5, Glenn, CA
Built 1965 Load: 34.7 t ADT: 1,167
U.S. HIGHWAY 101
FairOver: MAPLE HILL RD,SALMON CRK
01-HUM-101-23.89, Humboldt, CA
Built 1962 Load: 34.7 t ADT: 5,100
COLE RD
FairOver: BRIAR CANAL
40 FT E/O BOWKER RD, Imperial, CA
Built 1971 Load: 34.7 t ADT: 4,900
STATE ROUTE 134
FairOver: SINCLAIR AVE
07-LA-134-R8.56-GNDL, Los Angeles, CA
Built 1967 Load: 34.7 t ADT: 234,000
STATE ROUTE 14
FairOver: AVENUE "J"
07-LA-014-R67.95-LAN, Los Angeles, CA
Built 1972 Load: 34.7 t ADT: 25,500
CANWOOD ST
FairOver: MEDEA CRK
0.3MI E/O KANAN RD, Los Angeles, CA
Built 1964 Load: 34.7 t ADT: 8,755
ROADSIDE DR
FairOver: MEDEA CRK
0.3MI E/O KANAN RD, Los Angeles, CA
Built 1964 Load: 34.7 t ADT: 3,366
South ST
FairOver: COYOTE CR
0.3MI E/O CARMENITA RD, Los Angeles, CA
Built 1951 Load: 34.7 t ADT: 22,718
LOYNES DR
FairOver: LOS CERRITOS DRA CHA
300FT W/O STUDEBAKER RD, Los Angeles, CA
Built 1966 Load: 34.7 t ADT: 8,240
DON JULIAN RD
FairOver: PUENTE CRK
0.3MI E/O 7TH AVE, Los Angeles, CA
Built 1953 Load: 34.7 t ADT: 9,246
VALENCIA BLD S
FairOver: SANTA CLARA RIV SF
0.3MI N/O MGC MNT PRKWY, Los Angeles, CA
Built 1967 Load: 34.7 t ADT: 27,000
175TH ST E
FairOver: CALIFORNIA AQUEDUCT
2.0MI S/O SR-138 HWY, Los Angeles, CA
Built 1968 Load: 34.7 t ADT: 21
263RD ST E
FairOver: CALIFORNIA AQUEDUCT
1.0MI S/O SR-138 HWY, Los Angeles, CA
Built 1968 Load: 34.7 t ADT: 236
LTL TUJUNGA CYN RD
FairOver: MAREK CYN WASH
1.3MI N/O FOOTHILL BLVD, Los Angeles, CA
Built 1970 Load: 34.7 t ADT: 2,040
YEAGER ST
FairOver: LIVE OAK WASH
0.3MI N/O PUDDINGSTONE DR, Los Angeles, CA
Built 2011 Load: 34.7 t ADT: 1,818
ROAD 19
FairOver: ASH SLOUGH
0.8 MI N AVE 26, Madera, CA
Built 1981 Load: 34.7 t ADT: 142
STATE ROUTE 99 SB
FairOver: BLACK RASCAL CANAL
10-MER-099-17.30, Merced, CA
Built 1964 Load: 34.7 t ADT: 25,500
STATE ROUTE 139
FairOver: HOWARDS GULCH
02-MOD-139-R2.23, Modoc, CA
Built 1966 Load: 34.7 t ADT: 1,600
Showing 15,101-15,150 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.