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 70
GoodOver: SOUTH HONCUT CREEK
03-YUB-070-25.81, Yuba, CA
Built 1941 Load: 28.2 t ADT: 9,700
INTERSTATE 880
GoodOver: DAMON SLOUGH
04-ALA-880-26.53-OAK, Alameda, CA
Built 1948 Load: 28.5 t ADT: 199,000
STATE ROUTE 99 SB
GoodOver: BIKE PATH
03-BUT-099-R34.63-CHC, Butte, CA
Built 1966 Load: 28.5 t ADT: 24,750
MAXWELL ROAD
GoodOver: COLUSA TROUGH
2.4 MI E FOUR MI RD, Colusa, CA
Built 1972 Load: 28.5 t ADT: 2,282
WALNUT BLVD
GoodOver: E CONTRA COSTA ID CANAL
0.5 MI S BALFOUR RD, Contra Costa, CA
Built 1968 Load: 28.5 t ADT: 13,086
FOURTH ST
GoodOver: RODEO CREEK
0.1 MI E PARKER AVE, Contra Costa, CA
Built 1986 Load: 28.5 t ADT: 4,279
STATE ROUTE 178 EB
GoodOver: BOREL CANAL
06-KER-178-R43.69, Kern, CA
Built 1974 Load: 28.5 t ADT: 2,100
N405-E&W10 CONNCTR
GoodOver: NATIONAL BLVD
07-LA-405-29.16-LA, Los Angeles, CA
Built 1964 Load: 28.5 t ADT: 32,000
E118-W210 CONN
GoodOver: DRONFIELD AVENUE
07-LA-118-R13.68-LA, Los Angeles, CA
Built 1975 Load: 28.5 t ADT: 13,262
STATE ROUTE 118
GoodOver: CANOGA AVE
07-LA-118-R2.32-LA, Los Angeles, CA
Built 1971 Load: 28.5 t ADT: 155,000
ALAMEDA AVE
GoodOver: BURBANK WESTERN CHAN
0.3MI S/O I-5 FWY, Los Angeles, CA
Built 1949 Load: 28.5 t ADT: 36,252
NASH DRIVE
GoodOver: HILLSIDE
BET JEWETT DR AND W TERM, Los Angeles, CA
Built 1983 Load: 28.5 t ADT: 10
TUPELO RIDGE DR
GoodOver: DRY CYN CHAN
1.8MI N/O BOUQUET CN RD, Los Angeles, CA
Built 1979 Load: 28.5 t ADT: 1,437
UPPER BIG T CYN RD
GoodOver: ALDER CRK BR
4.1MI E/O ANGELES FOR HWY, Los Angeles, CA
Built 1983 Load: 28.5 t ADT: 140
MCBEAN PARKWAY
GoodOver: SANTA CLARA RIV
0.5MI N/O MAGIC MTN PKY, Los Angeles, CA
Built 1985 Load: 28.5 t ADT: 61,500
BRANSCOMB RD
GoodOver: SOUTH FORK EEL RIVER
1.5 MI E WILDERNESS RDGE, Mendocino, CA
Built 1961 Load: 28.5 t ADT: 104
CANYON RD
GoodOver: OUTSIDE CANAL
0.3 MI S PIONEER RD, Merced, CA
Built 1965 Load: 28.5 t ADT: 477
STATE ROUTE 299
GoodOver: RUSH CREEK
02-MOD-299-8.07, Modoc, CA
Built 1964 Load: 28.5 t ADT: 1,500
ROBLEY RD
GoodOver: CALERA CREEK
JUST W CORRAL DE TIERRA, Monterey, CA
Built 1961 Load: 28.5 t ADT: 1,100
WASHINGTON ST
GoodOver: DRY CREEK
JUST SOUTH OF DARMS LANE, Napa, CA
Built 1970 Load: 28.5 t ADT: 343
STATE ROUTE 36
GoodOver: BAILEY CREEK
02-PLU-036-R13.73, Plumas, CA
Built 1966 Load: 28.5 t ADT: 5,000
INTERSTATE 10 EB
GoodOver: WEST CACTUS WASH
08-RIV-010-R72.93, Riverside, CA
Built 1965 Load: 28.5 t ADT: 11,250
70TH AVENUE
GoodOver: COACHELLA CANAL WSTWAY 1
50' E/O CLEVELAND STREET, Riverside, CA
Built 1954 Load: 28.5 t ADT: 2,170
STATE ROUTE 16
GoodOver: DEER CREEK OVERFLOW
03-SAC-016-14.37, Sacramento, CA
Built 1948 Load: 28.5 t ADT: 11,050
INTERSTATE 15 NB
GoodOver: PANO DITCH
08-SBD-015-R138.73, San Bernardino, CA
Built 1965 Load: 28.5 t ADT: 22,000
STATE ROUTE 1
GoodOver: JFK DRIVE
04-SF-001-4.45-SF, San Francisco, CA
Built 1936 Load: 28.5 t ADT: 81,000
INTERSTATE 5
GoodOver: UP RR SPUR, W ACACIA ST
10-SJ-005-27.79-STKN, San Joaquin, CA
Built 1970 Load: 28.5 t ADT: 113,000
LOS OSOS VALLEY RD
GoodOver: LOS OSOS CREEK
LOS OSOS VALLEY ROAD, San Luis Obispo, CA
Built 1991 Load: 28.5 t ADT: 16,105
STATE ROUTE 192
GoodOver: TORO CREEK
05-SB-192-12.14, Santa Barbara, CA
Built 1928 Load: 28.5 t ADT: 2,000
LOS COCHES ST
GoodOver: BERRYESSA CREEK
0.1 MI S CALAVERAS RD, Santa Clara, CA
Built 1971 Load: 28.5 t ADT: 6,800
BEAR CREEK RD
GoodOver: RUNDEL CREEK
0.72 MI W/O SH17, Santa Clara, CA
Built 1938 Load: 28.5 t ADT: 4,000
CRESTBROOK DRIVE
GoodOver: SARATOGA CREEK
NW SARATOGA AVE, Santa Clara, CA
Built 1956 Load: 28.5 t ADT: 780
STATE ROUTE 96
GoodOver: IRVING CREEK
02-SIS-096-R7.25, Siskiyou, CA
Built 1966 Load: 28.5 t ADT: 410
CANYON CREEK ROAD
GoodOver: CANYON CREEK
SCOTT BAR, Siskiyou, CA
Built 1966 Load: 28.5 t ADT: 50
STWRT PT-SKGG SPRG
GoodOver: HAUPT CREEK
6.0 MI E OF SR 1, Sonoma, CA
Built 1937 Load: 28.5 t ADT: 200
RIVER ROAD
GoodOver: ORESTIMBA CREEK
0.6 MI SE CROWS LNDING RD, Stanislaus, CA
Built 1958 Load: 28.5 t ADT: 2,246
LAKE ROAD
GoodOver: T.I.D. MAIN CANAL
0.5 MI E OF HICKMAN, Stanislaus, CA
Built 1920 Load: 28.5 t ADT: 2,102
INTERSTATE 5 SB
GoodOver: ELDER CREEK
02-TEH-005-R16.99, Tehama, CA
Built 1965 Load: 28.5 t ADT: 14,000
INTERSTATE 5 NB
GoodOver: ELDER CREEK
02-TEH-005-R16.99, Tehama, CA
Built 1965 Load: 28.5 t ADT: 14,000
INTERSTATE 5 NB
GoodOver: BURCH CREEK
02-TEH-005-R8.01, Tehama, CA
Built 1966 Load: 28.5 t ADT: 13,500
ROAD 252(PLANO ST)
GoodOver: TULE RIV & POPLAR DITCH
0.4 MI N OF SR 190, Tulare, CA
Built 1953 Load: 28.5 t ADT: 21,000
M 189A
GoodOver: MIDDLE FORK TULE RIVER
0.1 MI SE SR 190, Tulare, CA
Built 1967 Load: 28.5 t ADT: 25
ROAD 148
GoodOver: INSIDE CREEK
0.63 MI S OF SR 137, Tulare, CA
Built 1967 Load: 28.5 t ADT: 75
AVENUE 32
GoodOver: WHITE RIVER
0.1 MI E OF RT 168, Tulare, CA
Built 1947 Load: 28.5 t ADT: 75
ROAD 130
GoodOver: SAND CREEK
0.1 MI N OF AVE 414, Tulare, CA
Built 1965 Load: 28.5 t ADT: 300
AVENUE 432
GoodOver: TRAVER DITCH
0.4 MI E OF RD 64, Tulare, CA
Built 1971 Load: 28.5 t ADT: 1,200
RD 148
GoodOver: CAMERON CREEK
0.1 MI S OF AVE 288, Tulare, CA
Built 1951 Load: 28.5 t ADT: 250
Gordon Wells Rd
GoodOver: All-American Canal
19 mi w/o Yuma, Imperial, CA
Built 2009 Load: 28.6 t ADT: 20
W580-680 CONNECTOR
GoodOver: ALAMO CANAL
04-ALA-580-20.56-PLE, Alameda, CA
Built 1965 Load: 28.8 t ADT: 42,200
ROUTE 980
GoodOver: 29TH STREET
04-ALA-980-1.64-OAK, Alameda, CA
Built 1969 Load: 28.8 t ADT: 57,500
Showing 19,351-19,400 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.