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
US HIGHWAY 101 SB
GoodOver: HILLSIDE
07-VEN-101-10.21-CMRL, Ventura, CA
Built 1987 Load: 30.5 t ADT: 132,000
C.R. 90
GoodOver: COTTONWOOD SLOUGH
0.15 MI N OF C.R. 24, Yolo, CA
Built 1959 Load: 30.5 t ADT: 234
STATE ROUTE 12
GoodOver: COSGROVE CREEK
10-CAL-012-10.32, Calaveras, CA
Built 1956 Load: 30.8 t ADT: 6,800
INTERSTATE 5
GoodOver: HILLGATE ROAD
03-COL-005-6.84, Colusa, CA
Built 1957 Load: 30.8 t ADT: 35,000
S160-W4 CONNECTOR
GoodOver: UP RR
04-CC-160-0.25, Contra Costa, CA
Built 1971 Load: 30.8 t ADT: 11,950
DIABLO RD-S680 ON
GoodOver: SAN RAMON CREEK
04-CC-680-R7.43, Contra Costa, CA
Built 1975 Load: 30.8 t ADT: 4,750
STATE ROUTE 49
GoodOver: HASTINGS CREEK
03-ED-049-28.19, El Dorado, CA
Built 1962 Load: 30.8 t ADT: 3,500
MOUNT AUKUM ROAD
GoodOver: NORTH FK COSUMNES RIVER
2.6 MI S PLEASANT VALY RD, El Dorado, CA
Built 1960 Load: 30.8 t ADT: 1,746
STATE ROUTE 86 NB
GoodOver: TRIFOLIUM CANAL
11-IMP-086-R34.82, Imperial, CA
Built 1948 Load: 30.8 t ADT: 7,350
INTERSTATE 8 EB
GoodOver: BOULDER CREEK
11-IMP-008-R0.96R, Imperial, CA
Built 1964 Load: 30.8 t ADT: 5,423
BUCK OWENS BLVD
GoodOver: CALLOWAY CANAL
1 MI NORTH OF S.R. 178, Kern, CA
Built 1965 Load: 30.8 t ADT: 7,348
U.S. HIGHWAY 395
GoodOver: SUSAN RIVER
02-LAS-395-72.29, Lassen, CA
Built 1954 Load: 30.8 t ADT: 1,775
STATE ROUTE 1
GoodOver: SAN GABRIEL RIVER
07-LA-001-0.04-LBCH, Los Angeles, CA
Built 1931 Load: 30.8 t ADT: 36,400
ST RTE 1 (PCH)
GoodOver: SANTA MONICA STORM DRAIN
07-LA-001-37.01-LA, Los Angeles, CA
Built 1940 Load: 30.8 t ADT: 82,000
STATE ROUTE 1
GoodOver: BNSF RY
07-LA-001-9.93-LA, Los Angeles, CA
Built 1936 Load: 30.8 t ADT: 26,500
STATE ROUTE 14
GoodOver: AVENUE Q
07-LA-014-R60.19-PMDL, Los Angeles, CA
Built 1966 Load: 30.8 t ADT: 89,000
STATE ROUTE 134 EB
GoodOver: ARBOR DELL HILLMONT UC
07-LA-134-R10.97-LA, Los Angeles, CA
Built 1971 Load: 30.8 t ADT: 223,000
INTERSTATE 405
GoodOver: HILLSIDE
07-LA-405-32.72-LA, Los Angeles, CA
Built 1975 Load: 30.8 t ADT: 268,700
SAN FERNANDO RD
GoodOver: VERDUGO WA
0.1MI N/O US-101 FWY, Los Angeles, CA
Built 1939 Load: 30.8 t ADT: 37,044
GREENLEAF CYN RD
GoodOver: GREENLEAF CYN CRK
0.4MI W/O TOPANGA CYN BL, Los Angeles, CA
Built 1942 Load: 30.8 t ADT: 204
LEMON AVE
GoodOver: ARCADIA WASH
0.1MI E/O EL MONTE AVE, Los Angeles, CA
Built 1955 Load: 30.8 t ADT: 816
OAK GROVE DR
GoodOver: FLINT CYN WASH
0.3MI W/O WINDSOR AVE, Los Angeles, CA
Built 1955 Load: 30.8 t ADT: 6,347
ROAD 200
GoodOver: FINE GOLD CREEK
8.3 MI NE STATE RTE 41, Madera, CA
Built 1947 Load: 30.8 t ADT: 1,200
CR 16
GoodOver: FRESNO RIVER
1 MI N OF AVE 14, Madera, CA
Built 1964 Load: 30.8 t ADT: 368
INTERSTATE 5 SB
GoodOver: DELTA-MENDOTA CANAL
10-MER-005-24.84, Merced, CA
Built 1967 Load: 30.8 t ADT: 15,500
INTERSTATE 5 NB
GoodOver: DELTA-MENDOTA CANAL
10-MER-005-24.86, Merced, CA
Built 1967 Load: 30.8 t ADT: 21,500
ROUTE 1
GoodOver: OLD NEWPORT BLVD DRAIN
12-ORA-001-19.72-NPTB, Orange, CA
Built 2000 Load: 30.8 t ADT: 46,000
INTERSTATE 10
GoodOver: CALADA DITCH
08-RIV-010-R130.86, Riverside, CA
Built 1966 Load: 30.8 t ADT: 10,650
INTERSTATE 10 WB
GoodOver: PALEN DITCH
08-RIV-010-R110.47, Riverside, CA
Built 1966 Load: 30.8 t ADT: 10,700
INTERSTATE 10 WB
GoodOver: EAST CACTUS WASH
08-RIV-010-R73.45, Riverside, CA
Built 1965 Load: 30.8 t ADT: 11,250
INTERSTATE 10 EB
GoodOver: COTTON GULCH
08-RIV-010-R80.33, Riverside, CA
Built 1965 Load: 30.8 t ADT: 11,250
INTERSTATE 10 WB
GoodOver: AZTEC DITCH
08-RIV-010-R115.40, Riverside, CA
Built 1966 Load: 30.8 t ADT: 10,700
INTERSTATE 10 EB
GoodOver: AZTEC DITCH
08-RIV-010-R115.40, Riverside, CA
Built 1966 Load: 30.8 t ADT: 10,700
INTERSTATE 10
GoodOver: ALTA DITCH
08-RIV-010-R119.59, Riverside, CA
Built 1966 Load: 30.8 t ADT: 10,700
INTERSTATE 10 EB
GoodOver: ALTA DITCH
08-RIV-010-R119.59, Riverside, CA
Built 1966 Load: 30.8 t ADT: 10,700
W10-S15 CONN RAMP
GoodOver: DAY CANYON CHANNEL
08-SBD-010-10.12-ONT, San Bernardino, CA
Built 1975 Load: 30.8 t ADT: 29,000
STATE ROUTE 18
GoodOver: WATERMAN CANYON RD
08-SBD-018-R13.29, San Bernardino, CA
Built 1969 Load: 30.8 t ADT: 16,800
MISSION BLVD
GoodOver: SAN ANTONIO CREEK CHAN
50' E OF L.A. COUNTY LINE, San Bernardino, CA
Built 1929 Load: 30.8 t ADT: 20,177
EL CAMINO REAL
GoodOver: BUENA VISTA CREEK
50FT S/O RTE 78 OFFRAMP, San Diego, CA
Built 1966 Load: 30.8 t ADT: 40,522
BRYANT ST
GoodOver: HILLSIDE
JUST SW OF BEALE ST, San Francisco, CA
Built 1953 Load: 30.8 t ADT: 20,000
JACK TONE RD
GoodOver: MOSHER SLOUGH
1 MI N OF 8-MILE RD, San Joaquin, CA
Built 1962 Load: 30.8 t ADT: 2,752
ATKINS RD
GoodOver: BEAR CREEK BRANCH
1.8 MI N OF BRANDT RD, San Joaquin, CA
Built 1971 Load: 30.8 t ADT: 150
CATHEDRAL OAKS RD
GoodOver: SAN JOSE CREEK
EAST OF KELLOG AVE, Santa Barbara, CA
Built 1964 Load: 30.8 t ADT: 10,208
W JULIAN ST
GoodOver: GUADALUPE RIVER
NEAR RIVER ST, Santa Clara, CA
Built 1976 Load: 30.8 t ADT: 8,000
LINCOLN AVE
GoodOver: LOS GATOS CREEK
0.3 MI S OF I-280, Santa Clara, CA
Built 1956 Load: 30.8 t ADT: 27,000
US HIGHWAY 101 SB
GoodOver: LYNCH CREEK
04-SON-101-5.19-PET, Sonoma, CA
Built 1955 Load: 30.8 t ADT: 43,000
M231
GoodOver: NORTH FORK TULE RIVER
0.19 MI NE OF SM239, Tulare, CA
Built 1967 Load: 30.8 t ADT: 25
US HIGHWAY 101 NB
GoodOver: DULAH ROAD
07-VEN-101-R34.68, Ventura, CA
Built 1973 Load: 30.8 t ADT: 40,500
ROYAL AVENUE
GoodOver: ARROYO SIMI
0.4 MI W SEQUOIA AVE, Ventura, CA
Built 1968 Load: 30.8 t ADT: 16,500
CORTINA SCHOOL RD
GoodOver: CORTINA CREEK
1.4 MI SOUTH MEYERS RD, Colusa, CA
Built 1970 Load: 31.1 t ADT: 473
Showing 19,701-19,750 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.