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
RIVER ROAD
PoorOver: RUSSIAN RIV SUMMER XING
0.4 MI E/O ASTI ROAD, Sonoma, CA
Built 1992 Load: 32.4 t ADT: 105
OLD REDWOOD HWY
PoorOver: WILLOW BROOK CREEK
0.5 MI N/O US 101, Sonoma, CA
Built 1999 Load: 32.4 t ADT: 19,980
MITCHELL ROAD
PoorOver: TUOLUMNE RIVER
0.55 MI S FINCH RD, Stanislaus, CA
Built 1958 Load: 32.4 t ADT: 37,377
LA GRANGE ROAD
PoorOver: TUOLUMNE RIVER
0.25 MI N STATE ROUTE 132, Stanislaus, CA
Built 1979 Load: 32.4 t ADT: 1,465
PLEASANT GROVE RD
PoorOver: SCIATA CREEK
.8 MI N OF RIEGO RD, Sutter, CA
Built 1988 Load: 32.4 t ADT: 1,190
COOLEY ROAD
PoorOver: SUTTER-BUTTE CANAL
0.6 MI E OF METTER RD, Sutter, CA
Built 1910 Load: 32.4 t ADT: 193
INTERSTATE 5
PoorOver: THOMES CREEK
02-TEH-005-R12.16, Tehama, CA
Built 2011 Load: 32.4 t ADT: 29,500
TEHAMA AVE
PoorOver: CORNING CANAL
0.5 MI E RAWSON RD, Tehama, CA
Built 1968 Load: 32.4 t ADT: 500
SUMMIT CREEK ROAD
PoorOver: CARR CREEK
0.1 MI S OF S.R. 3, Trinity, CA
Built 1987 Load: 32.4 t ADT: 300
STATE ROUTE 190
PoorOver: NORTH FORK TULE RIVER
06-TUL-190-R32.81, Tulare, CA
Built 1967 Load: 32.4 t ADT: 2,450
SR 216 & AVE 344
PoorOver: FRIANT-KERN CANAL
06-TUL-216-11.72, Tulare, CA
Built 1949 Load: 32.4 t ADT: 5,500
SR 108
PoorOver: MONO WAY
10-TUO-108-R2.20, Tuolumne, CA
Built 2004 Load: 32.4 t ADT: 17,450
PARROTTS FERRY RD
PoorOver: NEW MELONES RESERVOIR
4 MILES SOUTH OF ROUTE 4, Tuolumne, CA
Built 1978 Load: 32.4 t ADT: 2,500
MONO WAY
PoorOver: SULLIVAN CREEK
0.5 MI E OF HWY 108, Tuolumne, CA
Built 1991 Load: 32.4 t ADT: 25,060
STATE ROUTE 126
PoorOver: O'LEARY CREEK
07-VEN-126-T16.76, Ventura, CA
Built 1966 Load: 32.4 t ADT: 37,500
TIERRA REJADA RD.
PoorOver: ARROYO SIMI
0.5 MI S/O LOS ANGELES AV, Ventura, CA
Built 1990 Load: 32.4 t ADT: 8,640
INDUSTRIAL BLVD
PoorOver: DEEP WATER CANAL & RR
0.67 MI N OF JEFFERSON BL, Yolo, CA
Built 1997 Load: 32.4 t ADT: 6,000
STUART MESA ROAD
PoorOver: SANTA MARGARITA RIVER
0.4 MILE NW OF VANDEGRIFT, San Diego, CA
Built 1960 Load: 32.6 t ADT: 15,000
HIGH ST
PoorOver: OAKLAND ESTUARY
0.4 MI S/W OF I-880, Alameda, CA
Built 1939 Load: 32.7 t ADT: 19,900
GRANT LINE RD
PoorOver: CALIFORNIA AQUEDUCT
0.1 MI NE OF I-580, Alameda, CA
Built 1963 Load: 32.7 t ADT: 1,000
ANAHEIM-PUENTE RD
PoorOver: SAN JOSE CRK
0.3MI W/O AZUSA AVE, Los Angeles, CA
Built 1967 Load: 32.7 t ADT: 4,705
AVENUE 17
PoorOver: DRY CREEK
0.25 MI W OF RD 20, Madera, CA
Built 1971 Load: 32.7 t ADT: 250
MIDDLE RD
PoorOver: ESTERO DE SAN ANTONIO
4.5 MI FROM S.R. 1, Marin, CA
Built 1958 Load: 32.7 t ADT: 40
ROUTE 40 W BOUND
PoorOver: NEBO STREET
08-SBD-040-R4.71, San Bernardino, CA
Built 1964 Load: 32.7 t ADT: 9,850
INTERSTATE 40
PoorOver: MCGINLEY WASH
08-SBD-040-R104.22, San Bernardino, CA
Built 1970 Load: 32.7 t ADT: 7,500
INTERSTATE 40
PoorOver: MCGINLEY WASH
08-SBD-040-R104.22, San Bernardino, CA
Built 1970 Load: 32.7 t ADT: 7,500
STOCKTON AVE
PoorOver: SOQUEL CREEK
AT THE ESPLANADE, Santa Cruz, CA
Built 1934 Load: 32.7 t ADT: 15,000
STATE ROUTE 96
PoorOver: SCOTT RIVER
02-SIS-096-71.23, Siskiyou, CA
Built 1957 Load: 32.7 t ADT: 600
8TH AVE
PoorOver: NORTH BRANCH KINGS RIVER
0.5 MI N OF CLINTON, Kings, CA
Built 1970 Load: 33.0 t ADT: 600
NEWTON AVE
PoorOver: TULARE LAKE CANAL
1 MI W 12TH AVE, Kings, CA
Built 1970 Load: 33.0 t ADT: 250
BARTLETT SPRNGS RD
PoorOver: BARTLETT CREEK
19 MI E OF SR 20, Lake, CA
Built 1950 Load: 33.0 t ADT: 108
U.S. HIGHWAY 101
PoorOver: CORTE MADERA CR & EB SFD
04-MRN-101-8.47-LKSP, Marin, CA
Built 1959 Load: 33.0 t ADT: 19,700
FRONTAGE ROAD
PoorOver: LONG VALLEY CREEK
01-MEN-101-61.82, Mendocino, CA
Built 1960 Load: 33.0 t ADT: 200
FOREST ROAD 400
PoorOver: BUNKER GULCH
E OF JCT ROAD 440, Mendocino, CA
Built 1992 Load: 33.0 t ADT: 10
WOLF ROAD (CR 10)
PoorOver: WOLF CREEK
1.2 MI WEST OF ROUTE 49, Nevada, CA
Built 1968 Load: 33.0 t ADT: 6,332
INTERSTATE 40
PoorOver: WOODS WASH
08-SBD-040-R104.89, San Bernardino, CA
Built 1970 Load: 33.0 t ADT: 7,500
INTERSTATE 40 WB
PoorOver: GRANITE MOUNTAIN WASH
08-SBD-040-R76.50, San Bernardino, CA
Built 1972 Load: 33.0 t ADT: 16,500
RIVERSIDE AVENUE
PoorOver: SANTA ANA RIVER
3.1 MI S RTE I-10, San Bernardino, CA
Built 1978 Load: 33.0 t ADT: 13,550
WALNUT GROVE ROAD
PoorOver: MOKELUMNE RIVER
AT SJ & SAC COUNTY LINE, San Joaquin, CA
Built 1955 Load: 33.0 t ADT: 2,084
BRIDGE DR PARKWAY
PoorOver: REDWOOD SHORES LAGOON
EAST OF MARINE PKWY, San Mateo, CA
Built 1971 Load: 33.0 t ADT: 1,000
AGNEW RD
PoorOver: SAN TOMAS AQUINO CREEK
N MISSION COLLEGE BLVD, Santa Clara, CA
Built 1966 Load: 33.0 t ADT: 5,269
GLEN CANYON RD
PoorOver: BRANCIFORTE CREEK
0.1 MI N BRANCIFORTE DR, Santa Cruz, CA
Built 1939 Load: 33.0 t ADT: 1,800
MILL STATION RD
PoorOver: ATASCADERO CR OVERFLOW
0.2 MI E FERGUSON RD, Sonoma, CA
Built 1964 Load: 33.0 t ADT: 1,450
STATE ROUTE 299
PoorOver: MAD RIVER
01-HUM-299-R1.56, Humboldt, CA
Built 1965 Load: 33.4 t ADT: 4,775
LIVE OAK AVE
PoorOver: SAW PIT WASH
75FT E/O PECK RD, Los Angeles, CA
Built 1952 Load: 33.4 t ADT: 24,644
INTERSTATE 40
PoorOver: WOODS WASH
08-SBD-040-R104.90, San Bernardino, CA
Built 1970 Load: 33.4 t ADT: 7,500
BRIDGE DR PARKWAY
PoorOver: REDWOOD SHORES LAGOON
EAST OF MARINE PKWY, San Mateo, CA
Built 1971 Load: 33.4 t ADT: 2,600
CYPRESS ROAD
PoorOver: MARSH CREEK
0.05 MI EAST OF SR 4, Contra Costa, CA
Built 1964 Load: 33.7 t ADT: 9,415
N THORNE AVE
PoorOver: DRY CREEK CANAL
AT NIELSEN AVE, Fresno, CA
Built 1925 Load: 33.7 t ADT: 1,696
STATE ROUTE 86 SB
PoorOver: AMEROSA DITCH
11-IMP-086-57.34, Imperial, CA
Built 1989 Load: 33.7 t ADT: 7,300
Showing 26,601-26,650 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.
| Publisher | Kiznis Studio |
| Sources | FHWA National Bridge Inventory, public U.S. government datasets |