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
LANKERSHIM BLVD
GoodOver: LOS ANGELES RIVER
0.5 MI NORTH OF US-101, Los Angeles, CA
Built 1940 Load: 99.8 t ADT: 44,000
MLHLLND HWY S/XING
GoodOver: ARROYO SEQUIT
1.5MI N/O SR-1 HWY, Los Angeles, CA
Built 1938 Load: 99.8 t ADT: 408
LASSEN ST
GoodOver: BROWN CANYON WASH
0.16 KM W/O CANOGA AVE, Los Angeles, CA
Built 1971 Load: 99.8 t ADT: 21,400
COLD CYN RD
GoodOver: COLD CYN CRK
0.7MI S/O MULHOLLAND HWY, Los Angeles, CA
Built 1981 Load: 99.8 t ADT: 1,122
LANCASTER RD
GoodOver: UNNAMED WASH
0.1MI W/O 190TH ST W, Los Angeles, CA
Built 1976 Load: 99.8 t ADT: 408
HARBOR SCENIC DR
GoodOver: OIL PIPELINES
0.1MI S/O PANORAMA DR, Los Angeles, CA
Built 1969 Load: 99.8 t ADT: 2,163
SIERRA MADRE AVE
GoodOver: ROSEDALE PUC
0.8MI E/O N AZUSA AVE, Los Angeles, CA
Built 2012 Load: 99.8 t ADT: 9,384
STEPHEN RANCH RD
GoodOver: UNNAMED WASH
2.2MI N/O BASELINE RD, Los Angeles, CA
Built 1960 Load: 99.8 t ADT: 252
SR 1, ABANDONED RR
GoodOver: DIVARTY STREET
05-MON-001-R83.27, Monterey, CA
Built 1973 Load: 99.8 t ADT: 59,000
TERRA COTTA STREET
GoodOver: MCVICKERCHANNEL
.03 MI SW MIMOSA&T. COTTA, Riverside, CA
Built 1996 Load: 99.8 t ADT: 2,350
HAVEN AVENUE
GoodOver: DEER CREEK CHANNEL
0.5 MI N OF RTE 66, San Bernardino, CA
Built 1982 Load: 99.8 t ADT: 28,880
FRIARS ROAD
GoodOver: MURRAY CANYON
500FT E/O SR-163, San Diego, CA
Built 1970 Load: 99.8 t ADT: 64,000
JIM DAY ROAD
GoodOver: PIT RIVER
0.4 MI S/E OF SR 299, Shasta, CA
Built 1973 Load: 99.8 t ADT: 200
STATE ROUTE 96
GoodOver: KLAMATH RIVER
02-SIS-096-R5.08, Siskiyou, CA
Built 1970 Load: 99.8 t ADT: 410
AMADOR VALLEY ROAD
GoodOver: SOUTH SAN RAMON CREEK
W OF STAGECOACH RD, Alameda, CA
Built 1965 Load: 99.9 t ADT: 13,016
STATE ROUTE 4
GoodOver: CHEROKEE CREEK
10-CAL-004-R19.08, Calaveras, CA
Built 1989 Load: 99.9 t ADT: 5,900
INTERSTATE 80
GoodOver: SAN PABLO CREEK
04-CC-080-4.81, Contra Costa, CA
Built 1954 Load: 99.9 t ADT: 179,000
INTERSTATE 80
GoodOver: PINOLE CREEK
04-CC-080-8.40-PIN, Contra Costa, CA
Built 1957 Load: 99.9 t ADT: 179,000
INTERSTATE 80
GoodOver: RODEO CREEK
04-CC-080-10.73, Contra Costa, CA
Built 1958 Load: 99.9 t ADT: 115,000
S REED AVE
GoodOver: WAHTOKE CREEK
0.03 MI NORTH OF ADAMS AV, Fresno, CA
Built 1965 Load: 99.9 t ADT: 6,500
GENEVA ROAD
GoodOver: LOST MAN CREEK
0.8 miles east of Jct. Hw, Humboldt, CA
Built 2021 Load: 99.9 t ADT: 120
GENEVA ROAD
GoodOver: LITTLE LOST MAN CREEK
0.3 miles east of Jct. Hw, Humboldt, CA
Built 2021 Load: 99.9 t ADT: 120
Recreation Road
GoodOver: Coachella Canal Turnout
50 feet upstream Drop 1, Imperial, CA
Built 1940 Load: 99.9 t ADT: 50
INTERSTATE 710
GoodOver: STORM DRAIN
07-LA-710-21.50-BELL, Los Angeles, CA
Built 1957 Load: 99.9 t ADT: 207,000
INTERSTATE 5 SB
GoodOver: VIOLIN & MARPLE CANYONS
07-LA-005-R60.20L, Los Angeles, CA
Built 1969 Load: 99.9 t ADT: 36,657
STATE ROUTE 14
GoodOver: PLACERITA CREEK
07-LA-014-R28.20, Los Angeles, CA
Built 1969 Load: 99.9 t ADT: 148,000
STATE ROUTE 60
GoodOver: ARROYO DRIVE DRAIN
07-LA-060-R8.32-RSMD, Los Angeles, CA
Built 1967 Load: 99.9 t ADT: 222,000
SR 170 NB RAMPS
GoodOver: HOLLYWOOD CH VICTORY R N
07-LA-170-R17.30-LA, Los Angeles, CA
Built 1966 Load: 99.9 t ADT: 3,000
STATE ROUTE 57
GoodOver: BREA CANYON CHANNEL
07-LA-057-R0.72, Los Angeles, CA
Built 1972 Load: 99.9 t ADT: 203,000
STATE ROUTE 132
GoodOver: BLACKS CREEK
10-MPA-132-17.74, Mariposa, CA
Built 1964 Load: 99.9 t ADT: 1,240
STATE ROUTE 20
GoodOver: WOLF CREEK
03-NEV-020-R13.44-GVY, Nevada, CA
Built 1969 Load: 99.9 t ADT: 47,000
BENTON ROAD
GoodOver: TUCALOCA CREEK
0.5 MI. S/O SAGE ROAD, Riverside, CA
Built 1993 Load: 99.9 t ADT: 2,716
INTERSTATE 5
GoodOver: EAST DRAINAGE CANAL
03-SAC-005-26.88-SAC, Sacramento, CA
Built 1968 Load: 99.9 t ADT: 138,000
LA MESA/AMARGOSA R
GoodOver: ORO GRANDE WASH
LA MESA & AMARGOSA RDS, San Bernardino, CA
Built 2013 Load: 99.9 t ADT: 13,600
HAVASU LAKE ROAD
GoodOver: DRY RUN
HAVASU LAKE, San Bernardino, CA
Built 2020 Load: 99.9 t ADT: 200
BASILONE ROAD
GoodOver: UNNAMED CREEK
200' S. OF STAGECOACH RD, San Diego, CA
Built 2000 Load: 99.9 t ADT: 10,550
INTERSTATE 805
GoodOver: SAN YSIDRO DITCH
11-SD-805-0.54-SD, San Diego, CA
Built 1900 Load: 99.9 t ADT: 52,000
GENESEE AVE
GoodOver: ROSE CANYON CREEK
0.41MI S/O NOBEL DR, San Diego, CA
Built 1970 Load: 99.9 t ADT: 29,464
OLYMPIC PKWY
GoodOver: POGGI CANYON CHANNEL
0.5 MI E/O HERRITAGE RD, San Diego, CA
Built 1999 Load: 99.9 t ADT: 22,000
BAY STREET
GoodOver: TELEGRAPH CANYON
175 FT S/O L STREET, San Diego, CA
Built 1970 Load: 99.9 t ADT: 10,000
CARROLL CANYON RD
GoodOver: CARROLL CANYON CREEK
0.1M E/O PACIFIC HTS BLVD, San Diego, CA
Built 1985 Load: 99.9 t ADT: 7,919
STATE ROUTE 36
GoodOver: HARRISON GULCH
02-SHA-036-3.56, Shasta, CA
Built 1952 Load: 99.9 t ADT: 475
STWRT PT-SKGG SPRG
GoodOver: WOLF CREEK CULVERT WEST
1.7 MI E/O HOUSE CREEK, Sonoma, CA
Built 1978 Load: 99.9 t ADT: 300
STWRT PT-SKGG SPRG
GoodOver: WOLF CREEK CULVERT EAST
2.3 MI E/O HOUSE CREEK, Sonoma, CA
Built 1978 Load: 99.9 t ADT: 300
GAVIN MANDRY DRIVE
GoodOver: BRANCH OF BEST SLOUGH CR
1.95 MILES EAST OF INTERS, Yuba, CA
Built 2022 Load: 99.9 t ADT: 200
GAVIN MANDRY DRIVE
GoodOver: DRY CREEK
2.2 MILES EAST OF INTERSE, Yuba, CA
Built 2022 Load: 99.9 t ADT: 200
OLD AMADOR ROAD
PoorOver: RANCHERIA CREEK
0.8 MI NW OF MAIN ST, Amador, CA
Built 1925 ADT: 25
WINDING ROAD
PoorOver: MOKELUMNE RIVER
NO DATA ENTERED, Calaveras, CA
Built 1989 ADT: 50
WATERFRONT RD
PoorOver: SLOUGH
WEST OF T1/T2, Contra Costa, CA
Built 1945
WINDING ROAD
PoorOver: DEER CREEK
11S40-19.6, Fresno, CA
Built 1948 ADT: 50
Showing 25,751-25,800 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 |