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
ROAD 28
FairOver: WALKER CREEK
1.0 MI E/O ROAD 'F', Glenn, CA
Built 1974 Load: 28.2 t ADT: 235
STATE ROUTE 254
FairOver: GREENLAW CREEK
01-HUM-254-46.12, Humboldt, CA
Built 1959 Load: 28.2 t ADT: 330
STATE ROUTE 299
FairOver: GLENDALE DR
01-HUM-299-R3.78, Humboldt, CA
Built 1965 Load: 28.2 t ADT: 11,200
ALDERPOINT ROAD
FairOver: NORTH DOBBYN CREEK
5 MI N/O ALDERPOINT, Humboldt, CA
Built 1966 Load: 28.2 t ADT: 201
STATE ROUTE 86 NB
FairOver: GRAVEL WASH
11-IMP-086-59.77, Imperial, CA
Built 1981 Load: 28.2 t ADT: 7,300
STATE ROUTE 111
FairOver: REED WASH
11-IMP-111-40.90, Imperial, CA
Built 1950 Load: 28.2 t ADT: 3,650
INTERSTATE 5
FairOver: GORMAN SCHOOL RD
07-LA-005-R85.80, Los Angeles, CA
Built 1966 Load: 28.2 t ADT: 37,708
LONG BCH BLVD
FairOver: LOS ANGELES RIV
0.1MI E/O I-710 FWY, Los Angeles, CA
Built 1946 Load: 28.2 t ADT: 25,758
ARROW HWY
FairOver: BIG DALTON WASH
0.1MI W/O AZUSA AVE, Los Angeles, CA
Built 1956 Load: 28.2 t ADT: 12,059
CHIQUITO CYN RD
FairOver: SAN MRTNZ CHIQUITO CYN C
0.3MI N/O SR-126 HWY, Los Angeles, CA
Built 1958 Load: 28.2 t ADT: 1,836
STATE ROUTE 152 WB
FairOver: BERENDA SLOUGH
06-MAD-152-12.37, Madera, CA
Built 1968 Load: 28.2 t ADT: 15,000
CR 21
FairOver: BERENDA CREEK
0.17 MI N AVE 19, Madera, CA
Built 1950 Load: 28.2 t ADT: 159
AVENUE 21
FairOver: ASH SLOUGH
0.15 MI E OF RD 7, Madera, CA
Built 1971 Load: 28.2 t ADT: 150
FISHER ROAD
FairOver: ESCALADIAN CANAL
YOUD ROAD, Merced, CA
Built 1960 Load: 28.2 t ADT: 421
CR 54/CENTERVILLE
FairOver: NORTH BRANCH PIT RIVER
0.3 MI SOUTH OF SH 299, Modoc, CA
Built 1958 Load: 28.2 t ADT: 245
STATE ROUTE 1
FairOver: VICENTE CREEK
05-MON-001-R25.89, Monterey, CA
Built 1964 Load: 28.2 t ADT: 2,000
TASSAJARA ROAD
FairOver: CACHAGUA CREEK
INT CACHAGUA & TASSAJARA, Monterey, CA
Built 1950 Load: 28.2 t ADT: 660
BARANCA PKWY WB
FairOver: PETERS CANYON CHANNEL
0.2 MI E JAMBOREE RD, Orange, CA
Built 1969 Load: 28.2 t ADT: 10,700
INDUSTRIAL AVE
FairOver: ORCHARD CREEK
0.5 MI N ATHENS AVE, Placer, CA
Built 1950 Load: 28.2 t ADT: 8,724
STATE ROUTE 111 SB
FairOver: SNOW CREEK
08-RIV-111-R60.04L, Riverside, CA
Built 1937 Load: 28.2 t ADT: 9,500
INTERSTATE 10 EB
FairOver: PAUL GULCH
08-RIV-010-R81.21, Riverside, CA
Built 1965 Load: 28.2 t ADT: 11,250
FRED WARING DRIVE
FairOver: COACHELLA CANAL
0.2 MI. W/O MADISON ST, Riverside, CA
Built 1966 Load: 28.2 t ADT: 21,200
INTERSTATE 40
FairOver: MESQUITE WASH
08-SBD-040-147.25, San Bernardino, CA
Built 1957 Load: 28.2 t ADT: 17,400
INTERSTATE 5
FairOver: LAS FLORES CREEK
11-SD-005-R61.43-OCN, San Diego, CA
Built 1967 Load: 28.2 t ADT: 66,000
EL NORTE PARKWAY
FairOver: ESCONDIDO CREEK
0.22M W/O VALLEY PKWY, San Diego, CA
Built 1973 Load: 28.2 t ADT: 21,927
AUTO PARKWAY
FairOver: ESCONDIDO CREEK
0.1M W/O W. VALLEY PKWY, San Diego, CA
Built 1982 Load: 28.2 t ADT: 25,700
N5-MARCH LN OFFRMP
FairOver: EBMUD AQUEDUCT
10-SJ-005-29.83, San Joaquin, CA
Built 1970 Load: 28.2 t ADT: 10,800
STATE ROUTE 1
FairOver: SAN GREGORIO CREEK
04-SM-001-17.90, San Mateo, CA
Built 1941 Load: 28.2 t ADT: 6,100
STATE ROUTE 84
FairOver: SAN FRANCISCO BAY-SOUTH
04-SM-084-R29.25-MLP, San Mateo, CA
Built 1981 Load: 28.2 t ADT: 62,000
U.S. HIGHWAY 101
FairOver: COLMA CREEK
04-SM-101-21.61-SSF, San Mateo, CA
Built 1947 Load: 28.2 t ADT: 188,000
STATE ROUTE 166
FairOver: CUYAMA RIVER
05-SB-166-R30.37, Santa Barbara, CA
Built 1974 Load: 28.2 t ADT: 2,500
HAPPY CANYON ROAD
FairOver: SANTA AQUEDA CREEK
2.8 MI E SR 154, Santa Barbara, CA
Built 1952 Load: 28.2 t ADT: 873
WEST CLIFF DRIVE
FairOver: RAILROAD AND VIADUCT LN
WEST CLIFF AND BEACH ST, Santa Cruz, CA
Built 2001 Load: 28.2 t ADT: 5,000
STATE ROUTE 263
FairOver: SHASTA RIVER
02-SIS-263-56.35, Siskiyou, CA
Built 1931 Load: 28.2 t ADT: 1,200
MULLOY ROAD
FairOver: WILLOW CREEK
0.5 MI SOUTH OF YORK RD, Siskiyou, CA
Built 1982 Load: 28.2 t ADT: 41
STATE ROUTE 12
FairOver: DENVERTON CREEK
04-SOL-012-12.92, Solano, CA
Built 1957 Load: 28.2 t ADT: 12,200
US HIGHWAY 101 SB
FairOver: ASTI STORE RD
04-SON-101-R47.85, Sonoma, CA
Built 1964 Load: 28.2 t ADT: 10,850
BODEGA HWY
FairOver: SALMON CREEK
0.9 MI FROM SR 1, Sonoma, CA
Built 1962 Load: 28.2 t ADT: 1,400
MONTGOMERY DR
FairOver: SANTA ROSA CREEK
PIERCE ST & SOTOYOME DR, Sonoma, CA
Built 1906 Load: 28.2 t ADT: 8,600
LONE PINE RD
FairOver: BLUCHER CREEK
0.3 MI W OF S.H. 116, Sonoma, CA
Built 1958 Load: 28.2 t ADT: 1,950
OCCIDENTAL RD
FairOver: ATASCADERO CREEK
1.12 MI W S.R. 116, Sonoma, CA
Built 1971 Load: 28.2 t ADT: 5,100
RIVER ROAD
FairOver: HILLSIDE
1.7 MI WEST OF MIRABEL RD, Sonoma, CA
Built 2003 Load: 28.2 t ADT: 13,450
INTERSTATE 5 NB
FairOver: DIABLO GRANDE PKWY
10-STA-005-15.86, Stanislaus, CA
Built 1967 Load: 28.2 t ADT: 20,500
LA LOMA AVENUE
FairOver: DRY CREEK & MORTON ST
0.8 MI NE OF YOSEMITE BL, Stanislaus, CA
Built 1950 Load: 28.2 t ADT: 16,738
INTERSTATE 5 NB
FairOver: SOUTH FORK BLUE TENT CRK
02-TEH-005-31.75, Tehama, CA
Built 1940 Load: 28.2 t ADT: 19,500
SR 1 NB
FairOver: CALLEGUAS CREEK
07-VEN-001-9.87, Ventura, CA
Built 1957 Load: 28.2 t ADT: 4,300
STATE ROUTE 33 SB
FairOver: CANADA LARGA RD
07-VEN-033-R4.49, Ventura, CA
Built 1970 Load: 28.2 t ADT: 12,500
STATE ROUTE 33 NB
FairOver: CANADA LARGA RD
07-VEN-033-R4.49, Ventura, CA
Built 1970 Load: 28.2 t ADT: 12,500
66TH AV-S880 ONRMP
FairOver: DAMON SLOUGH
04-ALA-880-26.53-OAK, Alameda, CA
Built 1948 Load: 28.5 t ADT: 3,300
CARBONDALE ROAD
FairOver: WILLOW CREEK
E FOREST HOME RD, Amador, CA
Built 1940 Load: 28.5 t ADT: 225
Showing 11,401-11,450 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.