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
STATE ROUTE 36
FairOver: RATTLESNAKE CREEK
02-TRI-036-19.06, Trinity, CA
Built 1975 Load: 28.5 t ADT: 560
ROAD M109
FairOver: DEER CREEK
0.9 MI N OF AVE 104, Tulare, CA
Built 1967 Load: 28.5 t ADT: 315
R 208
FairOver: DEER CREEK
0.1 MI S OF A 104, Tulare, CA
Built 1948 Load: 28.5 t ADT: 350
WINDING ROAD
FairOver: REED CREEK
NO DATA ENTERED, Tuolumne, CA
Built 1977 Load: 28.5 t ADT: 50
RIDGE RD
FairOver: OREGON CREEK
0.1 MI E OF S.R. 49, Yuba, CA
Built 1969 Load: 28.5 t ADT: 540
INTERSTATE 580
FairOver: DAVENPORT AVE
04-ALA-580-R39.37-OAK, Alameda, CA
Built 1965 Load: 28.8 t ADT: 134,000
INTERSTATE 680
FairOver: LAGUNA CREEK LANE
04-ALA-680-R15.98-PLE, Alameda, CA
Built 1967 Load: 28.8 t ADT: 122,000
STATE ROUTE 70
FairOver: W BR FEATHER RIV(LK ORO)
03-BUT-070-28.22, Butte, CA
Built 1962 Load: 28.8 t ADT: 2,550
STATE ROUTE 99 SB
FairOver: LINDO CHANNEL
03-BUT-099-R33.87-CHC, Butte, CA
Built 1966 Load: 28.8 t ADT: 24,750
STATE ROUTE 99 NB
FairOver: LINDO CHANNEL
03-BUT-099-R33.87-CHC, Butte, CA
Built 1966 Load: 28.8 t ADT: 24,750
STATE ROUTE 70
FairOver: ABANDONED RR ROW
03-BUT-070-15.13-OVL, Butte, CA
Built 1963 Load: 28.8 t ADT: 20,100
NELSON AVE
FairOver: THERMALITO FOREBAY
2.1 MI W/O ST HWY 70, Butte, CA
Built 1968 Load: 28.8 t ADT: 860
CROUCH AVE
FairOver: LITTLE CHICO CREEK
0.5 MI S CHICO RIVER RD, Butte, CA
Built 1939 Load: 28.8 t ADT: 330
PUTNUM WAY
FairOver: SALT CREEK
1 MI N OF HILLGATE RD, Colusa, CA
Built 1967 Load: 28.8 t ADT: 421
HAHN ROAD
FairOver: TEHAMA-COLUSA CANAL
1.3 MI W CORTINA SCHOL RD, Colusa, CA
Built 1976 Load: 28.8 t ADT: 122
CORTINA SCHOOL RD
FairOver: TEHAMA-COLUSA CANAL
0.8 MI S HAHN RD, Colusa, CA
Built 1976 Load: 28.8 t ADT: 185
HILLGATE ROAD
FairOver: TEHAMA-COLUSA CANAL
2.5 MI WEST OF I-5, Colusa, CA
Built 1976 Load: 28.8 t ADT: 645
CREEKSIDE DR
FairOver: SAN RAMON CREEK
0.4 MI E OF S MAIN ST, Contra Costa, CA
Built 1959 Load: 28.8 t ADT: 2,100
PINOLE VALLEY RD
FairOver: PINOLE CREEK
0.3 MI SOUTH OF I-80, Contra Costa, CA
Built 1936 Load: 28.8 t ADT: 14,000
U.S. HIGHWAY 101
FairOver: KLAMATH BCH RD,WAUKELL C
01-DN-101-R3.77, Del Norte, CA
Built 1965 Load: 28.8 t ADT: 3,600
STATE ROUTE 180
FairOver: KINGS SLOUGH OVERFLOW
06-FRE-180-26.40, Fresno, CA
Built 1946 Load: 28.8 t ADT: 5,650
STATE ROUTE 180
FairOver: RABBIT DRAW
06-FRE-180-29.13, Fresno, CA
Built 1946 Load: 28.8 t ADT: 5,650
NORTH FORK ROAD
FairOver: SAN JOAQUIN RIVER
0.1 MI W/O FRIANT RD, Fresno, CA
Built 1952 Load: 28.8 t ADT: 4,300
STATE ROUTE 36
FairOver: SOUTH FORK VAN DUZEN RIV
01-HUM-036-35.37, Humboldt, CA
Built 1962 Load: 28.8 t ADT: 1,200
C.R. 203
FairOver: GOLD RUN CREEK
4.2 MI S OF SR 36, Lassen, CA
Built 1967 Load: 28.8 t ADT: 600
C.R. 203
FairOver: LASSEN CREEK
6.8 MI SE OF SR 36, Lassen, CA
Built 1967 Load: 28.8 t ADT: 600
STATE ROUTE 60
FairOver: STONER CREEK ROAD
07-LA-060-19.10-IDY, Los Angeles, CA
Built 1966 Load: 28.8 t ADT: 204,000
FIRST ST
FairOver: LITTLE DALTON WASH
0.3MI E/O AZUSA AVE, Los Angeles, CA
Built 1970 Load: 28.8 t ADT: 2,550
STATE ROUTE 140
FairOver: MERCED RIVER
10-MPA-140-42.50, Mariposa, CA
Built 2008 Load: 28.8 t ADT: 1,400
INTERSTATE 80 WB
FairOver: KINGVALE ROAD
03-PLA-080-69.23, Placer, CA
Built 1959 Load: 28.8 t ADT: 13,500
SPANISH RANCH RD
FairOver: SPANISH CREEK
INTERSECT BUCKS LAKE RD, Plumas, CA
Built 1962 Load: 28.8 t ADT: 50
INTERSTATE 10 WB
FairOver: BURIED MOUNTAIN WASH
08-RIV-010-R78.54, Riverside, CA
Built 1965 Load: 28.8 t ADT: 11,250
INTERSTATE 10 EB
FairOver: DESPERATION ARROYO
08-RIV-010-R77.09, Riverside, CA
Built 1965 Load: 28.8 t ADT: 11,250
INTERSTATE 10 EB
FairOver: WEST BURIED MTN WASH
08-RIV-010-R77.97, Riverside, CA
Built 1965 Load: 28.8 t ADT: 11,250
INTERSTATE 10 WB
FairOver: WEST COTTON GULCH
08-RIV-010-R79.94, Riverside, CA
Built 1965 Load: 28.8 t ADT: 11,250
STATE HIGHWAY 2
FairOver: SHEEP CREEK
08-SBD-002-2.44, San Bernardino, CA
Built 1936 Load: 28.8 t ADT: 7,200
9TH ST
FairOver: TWIN WARM CREEK
0.7 MI E WATERMAN AVE, San Bernardino, CA
Built 1960 Load: 28.8 t ADT: 12,500
OUTER LOOP RD
FairOver: STORM DRAINAGE CHANNEL
NEAR DENNING SPRING DR, San Bernardino, CA
Built 1986 Load: 28.8 t ADT: 1,200
NORTH LOOP RD
FairOver: STORM DRAINAGE CHANNEL
S OF SPANISH CANYON WAY, San Bernardino, CA
Built 1986 Load: 28.8 t ADT: 1,200
S VISTA WAY
FairOver: BUENA VISTA CREEK
50FT N/O HAYMAR DR, San Diego, CA
Built 1966 Load: 28.8 t ADT: 319
S 38TH STREET
FairOver: SOUTH BR CHOLLAS CREEK
0.26 MI S/O NATIONAL AVE, San Diego, CA
Built 1960 Load: 28.8 t ADT: 4,297
INTERSTATE 5 NB
FairOver: PARADISE CUT
10-SJ-005-R13.01, San Joaquin, CA
Built 1969 Load: 28.8 t ADT: 71,500
N1-E41 CONNECTOR
FairOver: MORRO CREEK
05-SLO-001-30.00-MOBY, San Luis Obispo, CA
Built 1962 Load: 28.8 t ADT: 3,200
W41-S1 CONNECTOR
FairOver: MORRO CREEK
05-SLO-041-0.01-MOBY, San Luis Obispo, CA
Built 1962 Load: 28.8 t ADT: 4,400
HIGUERA ST
FairOver: SAN LUIS OBISPO CREEK
AT SR 101, San Luis Obispo, CA
Built 1928 Load: 28.8 t ADT: 4,927
MADONNA RD
FairOver: SAN LUIS OBISPO CREEK
ADJACENT TO CALTRANS YD, San Luis Obispo, CA
Built 1963 Load: 28.8 t ADT: 30,400
HILLSDALE BLVD
FairOver: FOSTER CITY LAGOON
.6 MI N/O FOSTER CITY BLV, San Mateo, CA
Built 1964 Load: 28.8 t ADT: 11,372
PARK ROAD
FairOver: GAVIOTA CREEK
GAVIOTA STATE PARK, Santa Barbara, CA
Built 1909 Load: 28.8 t ADT: 5
STEVENS CANYON RD
FairOver: STEVENS CREEK
1.9 MI NW/O REDWOOD GU RD, Santa Clara, CA
Built 2004 Load: 28.8 t ADT: 1
STATE ROUTE 263
FairOver: DRY GULCH
02-SIS-263-54.51, Siskiyou, CA
Built 1929 Load: 28.8 t ADT: 1,200
Showing 11,501-11,550 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.