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 20
FairOver: BROADDUS CREEK
01-MEN-020-R32.82-WLTS, Mendocino, CA
Built 1966 Load: 31.4 t ADT: 5,450
SNYDER ROAD
FairOver: OUTSIDE CANAL
0.7 MI E ORCHARD LANE, Merced, CA
Built 1965 Load: 31.4 t ADT: 200
INDIANA RD
FairOver: SAN JOAQUIN RIVER
AT WASHINGTON RD, Merced, CA
Built 1955 Load: 31.4 t ADT: 120
US HIGHWAY 101 NB
FairOver: SAN LORENZO CREEK
05-MON-101-R40.42, Monterey, CA
Built 1968 Load: 31.4 t ADT: 7,950
INTERSTATE 80 WB
FairOver: TRUCKEE RIVER
03-NEV-080-28.00, Nevada, CA
Built 1959 Load: 31.4 t ADT: 13,500
INTERSTATE 10 EB
FairOver: HAZY GULCH
08-RIV-010-R74.10, Riverside, CA
Built 1965 Load: 31.4 t ADT: 11,250
RAMONA EXPRESSWAY
FairOver: SAN JACINTO RIVER
0.7 MI. W/O LAKEVIEW AVE., Riverside, CA
Built 1956 Load: 31.4 t ADT: 19,375
STATE ROUTE 16
FairOver: MORRISON CREEK
03-SAC-016-6.64, Sacramento, CA
Built 1937 Load: 31.4 t ADT: 10,800
INTERSTATE 40
FairOver: BEAL WASH
08-SBD-040-149.85, San Bernardino, CA
Built 1957 Load: 31.4 t ADT: 7,450
INTERSTATE 40 WB
FairOver: ASH HILL WASH
08-SBD-040-R54.75L, San Bernardino, CA
Built 1970 Load: 31.4 t ADT: 8,150
INTERSTATE 15 SB
FairOver: DEBRIS CONE CREEK
08-SBD-015-R19.29, San Bernardino, CA
Built 1969 Load: 31.4 t ADT: 90,500
INTERSTATE 15 NB
FairOver: DEBRIS CONE CREEK
08-SBD-015-R19.29, San Bernardino, CA
Built 1969 Load: 31.4 t ADT: 90,500
DOUGLAS DR
FairOver: SAN LUIS REY RIVER
1.0MI N/O ROUTE 76, San Diego, CA
Built 1965 Load: 31.4 t ADT: 33,800
INTERSTATE 5 NB
FairOver: WOODBRIDGE ROAD
10-SJ-005-42.67, San Joaquin, CA
Built 1979 Load: 31.4 t ADT: 26,500
EIGHT MILE RD
FairOver: BEAR CREEK
0.1 MI W/O SR 99, San Joaquin, CA
Built 1961 Load: 31.4 t ADT: 1,900
SAN JOAQUIN ST
FairOver: MORMON SLOUGH
0.1 MI S HAZLETON AVE, San Joaquin, CA
Built 1958 Load: 31.4 t ADT: 2,700
NB101-PRICE ST OFF
FairOver: PISMO CREEK
05-SLO-101-16.40-PBCH, San Luis Obispo, CA
Built 1960 Load: 31.4 t ADT: 5,900
GRAND AVENUE WB
FairOver: CALTRAIN,UPRR,INDUSTRIAL
0.1 MI E OF US 101, San Mateo, CA
Built 1984 Load: 31.4 t ADT: 12,955
ARMOUR RANCH ROAD
FairOver: SANTA AQUEDA CREEK
0.4 MI E SR 154, Santa Barbara, CA
Built 1981 Load: 31.4 t ADT: 291
SB US HIGHWAY 101
FairOver: LUCHESSA AVENUE
04-SCL-101-R5.26-GIL, Santa Clara, CA
Built 1973 Load: 31.4 t ADT: 26,000
U.S. HWY 101 (NB)
FairOver: LUCHESSA AVENUE
04-SCL-101-R5.26-GIL, Santa Clara, CA
Built 1973 Load: 31.4 t ADT: 26,000
STATE ROUTE 1 SB
FairOver: WATSONVILLE SLOUGH
05-SCR-001-R1.35-WAT, Santa Cruz, CA
Built 1967 Load: 31.4 t ADT: 19,500
STATE ROUTE 1 NB
FairOver: WATSONVILLE SLOUGH
05-SCR-001-R1.35-WAT, Santa Cruz, CA
Built 1967 Load: 31.4 t ADT: 19,500
ROCKVILLE ROAD
FairOver: GREEN VALLEY CREEK
0.13 MI W GREEN VALLEY LN, Solano, CA
Built 1997 Load: 31.4 t ADT: 1,651
MOSCOW ROAD
FairOver: HILLSIDE
1.85 MI NE OF SR 116, Sonoma, CA
Built 1960 Load: 31.4 t ADT: 700
STATE ROUTE 113
FairOver: SUTTER BYPASS
03-SUT-113-R10.81, Sutter, CA
Built 1968 Load: 31.4 t ADT: 5,600
OLD HWY 99 W
FairOver: ELDER CREEK
3.3 MI N GYLE RD, Tehama, CA
Built 1917 Load: 31.4 t ADT: 4,000
STATE ROUTE 299
FairOver: CANYON CREEK
02-TRI-299-43.36, Trinity, CA
Built 1966 Load: 31.4 t ADT: 3,325
IRR BIA RTE 141
FairOver: TURNBACK CREEK
MIWU RD 1.2KM E OF W HANI, Tuolumne, CA
Built 1980 Load: 31.6 t ADT: 20
GENERALS HIGHWAY (
FairOver: CLOVER CREEK
22 MI. NORTH OF ASH MT. E, Tulare, CA
Built 1930 Load: 31.7 t ADT: 662
INTERSTATE 5
FairOver: PETROLEUM CREEK
03-COL-005-R2.05, Colusa, CA
Built 1967 Load: 31.8 t ADT: 15,000
INTERSTATE 5
FairOver: PETROLEUM CREEK
03-COL-005-R2.05, Colusa, CA
Built 1967 Load: 31.8 t ADT: 18,000
E4-N160 CONNECTOR
FairOver: UP RR
04-CC-160-0.43, Contra Costa, CA
Built 1971 Load: 31.8 t ADT: 11,950
STATE ROUTE 180
FairOver: SOUTH FORK KINGS RIVER
06-FRE-180-130.13, Fresno, CA
Built 1938 Load: 31.8 t ADT: 730
E NORTH AVE
FairOver: C & K CANAL
JUST WEST OF NEWMARK AVE, Fresno, CA
Built 1944 Load: 31.8 t ADT: 1,880
W ALTHEA AVE
FairOver: DELTA-MENDOTA CANAL
1.03 MI W OF RUSSELL AVE, Fresno, CA
Built 1950 Load: 31.8 t ADT: 600
N ZEDIKER AVE
FairOver: ENTERPRISE CANAL
0.3 MI NORTH OF ASHLAN AV, Fresno, CA
Built 1925 Load: 31.8 t ADT: 350
E AMERICAN AVE
FairOver: C & K CANAL
JUST WEST OF NEWMARK AVE, Fresno, CA
Built 1949 Load: 31.8 t ADT: 600
P STREET
FairOver: POSO CANAL
NORTHWEST OF 8TH ST, Fresno, CA
Built 1982 Load: 31.8 t ADT: 4,464
STATE ROUTE 299
FairOver: REDWOOD CREEK
01-HUM-299-R22.33, Humboldt, CA
Built 1965 Load: 31.8 t ADT: 3,200
MCDANIEL RD
FairOver: RESERVATION MAIN DRAIN
0.4 MI N/O ROSS RD, Imperial, CA
Built 1985 Load: 31.8 t ADT: 80
STATE ROUTE 58
FairOver: MAIN DRAIN CANAL
06-KER-058-27.82, Kern, CA
Built 1948 Load: 31.8 t ADT: 9,000
TUPMAN ROAD
FairOver: CALIFORNIA AQUEDUCT
2 MI S OF STATION ROAD, Kern, CA
Built 1965 Load: 31.8 t ADT: 690
N5-N101 & S101-S5
FairOver: SOTO STREET
07-LA-005-16.59-LA, Los Angeles, CA
Built 1948 Load: 31.8 t ADT: 139,000
FLORENCE AVE
FairOver: LOS ANGELES RIV
0.3MI W/O WESTERN AVE, Los Angeles, CA
Built 1948 Load: 31.8 t ADT: 42,930
ARTESIA BLVD
FairOver: SAN GABRIEL RIV
0.3MI W/O I-605 FWY, Los Angeles, CA
Built 1941 Load: 31.8 t ADT: 28,353
FIRST ST
FairOver: L A RIV,UP,BNSF,MYERS,
0.5 MI W/O FWY 101, Los Angeles, CA
Built 1929 Load: 31.8 t ADT: 24,550
SUNSET AVENUE
FairOver: LOS BANOS CREEK
0.9 MI W ORTIGALITA RD, Merced, CA
Built 1965 Load: 31.8 t ADT: 1,960
CHOLAME ROAD
FairOver: CHOLAME CREEK
3.0 MI S TURKEY FLAT RD, Monterey, CA
Built 1960 Load: 31.8 t ADT: 200
STATE ROUTE 57
FairOver: BREA TRAIL
12-ORA-057-20.61-BRE, Orange, CA
Built 1971 Load: 31.8 t ADT: 245,000
Showing 12,051-12,100 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.