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 162
GoodOver: LITTLE SLOUGH
01-MEN-162-32.14, Mendocino, CA
Built 1958 Load: 29.5 t ADT: 2,200
MINTURN ROAD
GoodOver: DEADMAN CREEK
0.3 MI N BUCHAN HOLLOW RD, Merced, CA
Built 1965 Load: 29.5 t ADT: 1,540
39N50
GoodOver: ASH CREEK
3 MI PAST DAN RYAN PLACE, Modoc, CA
Built 1970 Load: 29.5 t ADT: 50
SCHULTE ROAD
GoodOver: CARMEL RIVER
0.35 M S CARMEL VALLEY RD, Monterey, CA
Built 2013 Load: 29.5 t ADT: 1,500
SOUTH CAMP ROAD
GoodOver: BIG SUR RIVER
AT PFEIFFER BIG SUR RD, Monterey, CA
Built 2012 Load: 29.5 t ADT: 100
STATE ROUTE 29 SB
GoodOver: NAPA CREEK
04-NAP-029-11.65-NAP, Napa, CA
Built 1964 Load: 29.5 t ADT: 33,500
SR 73 SB
GoodOver: WILDLIFE PATHWAY
12-ORA-073-18.32-LGNB, Orange, CA
Built 1996 Load: 29.5 t ADT: 34,500
CITRUS AVE
GoodOver: FULLERTON CREEK CHANNEL
200' N/O ASH AVE, Orange, CA
Built 1958 Load: 29.5 t ADT: 1,550
W/B LA PAZ ROAD
GoodOver: OSO CREEK
0.2 MI E/O MARGUERITE PKW, Orange, CA
Built 1979 Load: 29.5 t ADT: 14,140
STATE ROUTE 89
GoodOver: FRAZIER CREEK
02-PLU-089-6.29, Plumas, CA
Built 1954 Load: 29.5 t ADT: 1,015
US HIGHWAY 95
GoodOver: "D-10" CANAL
08-RIV-095-2.48-BLY, Riverside, CA
Built 1950 Load: 29.5 t ADT: 3,000
INTERSTATE 10 WB
GoodOver: POLARIS WASH
08-RIV-010-R62.03-COA, Riverside, CA
Built 1964 Load: 29.5 t ADT: 11,250
DRY CREEK ROAD
GoodOver: NORTH CHANNEL DRY CREEK
0.6 MI N ELKHORN BLVD, Sacramento, CA
Built 1966 Load: 29.5 t ADT: 6,200
INTERSTATE 215 NB
GoodOver: DEVIL CREEK
08-SBD-215-12.82-SBD, San Bernardino, CA
Built 1958 Load: 29.5 t ADT: 35,500
INTERSTATE 15 SB
GoodOver: MOJAVE RIVER OVERFLOW
08-SBD-015-R120.05, San Bernardino, CA
Built 1964 Load: 29.5 t ADT: 22,000
INTERSTATE 15 NB
GoodOver: MOJAVE RIVER OVERFLOW
08-SBD-015-R120.05, San Bernardino, CA
Built 1964 Load: 29.5 t ADT: 22,000
MARIPOSA RD
GoodOver: TEMPLE CREEK
0.8 MI N/W CARROLTON RD, San Joaquin, CA
Built 1934 Load: 29.5 t ADT: 5,528
THOMAS/LUCHESSA RD
GoodOver: CARNADERO CREEK (UVAS)
0.6 MI W MONTEREY RD, Santa Clara, CA
Built 1989 Load: 29.5 t ADT: 6,920
LOCKHART GULCH RD
GoodOver: BEAN CREEK
0.5 MI FROM MT HERMON RD, Santa Cruz, CA
Built 1940 Load: 29.5 t ADT: 1,500
EUREKA CANYON RD
GoodOver: CORRALITOS CREEK
NORTH OF RIDER RD, Santa Cruz, CA
Built 1938 Load: 29.5 t ADT: 500
GRAHAM HILL RD
GoodOver: SAN LORENZO RIVER
0.1 MI E STATE RTE 9, Santa Cruz, CA
Built 1938 Load: 29.5 t ADT: 30,100
OLD 44 DR
GoodOver: CLOVER CREEK
0.5 MI W/N WHITMORE, Shasta, CA
Built 1954 Load: 29.5 t ADT: 1,000
MONTAGUE GRENADA
GoodOver: SHASTA RIVER
0.25 MI N OBERLIN RD, Siskiyou, CA
Built 1972 Load: 29.5 t ADT: 1,148
Road 196
GoodOver: Friant-Kern Canal
2 mi WSW of Woodlake CA, Tulare, CA
Built 1948 Load: 29.5 t ADT: 50
STATE ROUTE 120
GoodOver: SOUTH FORK TUOLUMNE RIV
10-TUO-120-46.82, Tuolumne, CA
Built 1962 Load: 29.5 t ADT: 3,650
STATE ROUTE 33
GoodOver: COZY DELL CREEK
07-VEN-033-13.73, Ventura, CA
Built 1953 Load: 29.5 t ADT: 1,150
STATE ROUTE 33
GoodOver: APACHE CANYON CREEK
07-VEN-033-53.80, Ventura, CA
Built 1959 Load: 29.5 t ADT: 290
STATE ROUTE 33
GoodOver: CASTLE CREEK
07-VEN-033-50.70, Ventura, CA
Built 1959 Load: 29.5 t ADT: 290
STATE ROUTE 33
GoodOver: TIMBA CREEK
07-VEN-033-52.59, Ventura, CA
Built 1951 Load: 29.5 t ADT: 420
COUNTY ROAD 31
GoodOver: DRY SLOUGH
0.2 MI WEST OF C.R. #96, Yolo, CA
Built 1959 Load: 29.5 t ADT: 5,083
STATE ROUTE 26
GoodOver: S. FORK MOKELUMNE RIVER
10-CAL-026-30.00, Calaveras, CA
Built 1936 Load: 29.8 t ADT: 750
S FRANKWOOD AVE
GoodOver: WAHTOKE CREEK
0.3 MI N OF ADAMS AVE, Fresno, CA
Built 1959 Load: 29.8 t ADT: 2,800
U.S. HIGHWAY 101
GoodOver: BARKDULL ROAD
01-HUM-101-R43.32, Humboldt, CA
Built 1966 Load: 29.8 t ADT: 6,890
Canal Service Road
GoodOver: 945 Wash Overchute
6 mi north of Yuma, AZ, Imperial, CA
Built 1936 Load: 29.8 t ADT: 50
INTERSTATE 8 EB
GoodOver: MOUNTAIN SPRINGS RD
11-IMP-008-R3.09R, Imperial, CA
Built 1964 Load: 29.8 t ADT: 7,105
U.S. HIGHWAY 101
GoodOver: LIBERTY CANYON RD
07-LA-101-32.78, Los Angeles, CA
Built 1973 Load: 29.8 t ADT: 167,000
STATE ROUTE 57
GoodOver: METROLINK & UP RR
07-LA-057-R10.40-SDMS, Los Angeles, CA
Built 1971 Load: 29.8 t ADT: 158,000
N605-E210 CONN
GoodOver: BRADBURY FLOOD CTRL CH
07-LA-605-25.65-IRW, Los Angeles, CA
Built 1968 Load: 29.8 t ADT: 28,000
LOS COYOTES DIAG
GoodOver: LOS CERRITOS LINE E CHAN
0.3MI N/O SPRING ST, Los Angeles, CA
Built 1955 Load: 29.8 t ADT: 18,232
ELISE ST
GoodOver: CALIFORNIA AQUEDUCT
0.3MI E/O LA PETITE AVE, Los Angeles, CA
Built 1976 Load: 29.8 t ADT: 455
STATE STREET
GoodOver: METROLINK & BUSWAY
BTW MCALLISTER/POMEROY AV, Los Angeles, CA
Built 1925 Load: 29.8 t ADT: 19,272
RIVER RD (CR 400)
GoodOver: COARSEGOLD CREEK
7.1 MI SW RD #415, Madera, CA
Built 1966 Load: 29.8 t ADT: 300
NICASIO VAL RD
GoodOver: ARROYO NICASIO
NEAR LUCAS VALLEY RD, Marin, CA
Built 1928 Load: 29.8 t ADT: 4,000
CHILENO VALLEY RD
GoodOver: CHILENO CREEK TRIBUTARY
4.89 MI S TMALS-PTALMA RD, Marin, CA
Built 1927 Load: 29.8 t ADT: 213
STATE ROUTE 271
GoodOver: CEDAR CREEK
01-MEN-271-5.22, Mendocino, CA
Built 1933 Load: 29.8 t ADT: 150
BRANSCOMB RD
GoodOver: REDWOOD CREEK
10.1 MI E OF SH 1, Mendocino, CA
Built 1967 Load: 29.8 t ADT: 104
RUDDCK-CUNNINHM RD
GoodOver: HOWELL CREEK
0.18 MI N HOWELL CREEK RD, Mendocino, CA
Built 1958 Load: 29.8 t ADT: 619
SOUTHERN PACIFC AV
GoodOver: CANAL CREEK
0.5 MI W GURR RD, Merced, CA
Built 1964 Load: 29.8 t ADT: 2,445
SOUTH VISTA AVE
GoodOver: SOUTH DUTCHMAN CREEK
0.4 MI N OF CROSS RD, Merced, CA
Built 1940 Load: 29.8 t ADT: 5,000
STATE ROUTE 299
GoodOver: RUSH CREEK
02-MOD-299-6.32, Modoc, CA
Built 1964 Load: 29.8 t ADT: 1,500
Showing 19,501-19,550 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.