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
INTERSTATE 10 WB
FairOver: WHITEWATER RIVER
08-RIV-010-27.69, Riverside, CA
Built 1952 Load: 36.3 t ADT: 39,500
INTERSTATE 10 EB
FairOver: WHITEWATER RIVER
08-RIV-010-27.69, Riverside, CA
Built 1952 Load: 36.3 t ADT: 39,500
INTERSTATE 15 SB
FairOver: CLEGHORN CREEK
08-SBD-015-R18.48, San Bernardino, CA
Built 1969 Load: 36.3 t ADT: 90,500
CLEMENTS RD
FairOver: CALAVERAS RIVER
0.4 MI N COMSTOCK RD, San Joaquin, CA
Built 1969 Load: 36.3 t ADT: 1,146
PERSHING AVE
FairOver: SMITH CANAL
JUST NORTH HARDING WAY, San Joaquin, CA
Built 1952 Load: 36.3 t ADT: 29,100
STATE ROUTE 82
FairOver: MATADERO CREEK
04-SCL-082-23.63-PA, Santa Clara, CA
Built 1930 Load: 36.3 t ADT: 43,250
SODA CREEK RD
FairOver: SACRAMENTO RIVER
0.2 MI SE I-5, Shasta, CA
Built 1966 Load: 36.3 t ADT: 196
INTERSTATE 5
FairOver: PANORAMA ROAD
02-SIS-005-1.21, Siskiyou, CA
Built 1960 Load: 36.3 t ADT: 18,000
AGUA CALIENTE RD
FairOver: SONOMA CREEK
0.4 MI W HWY 12, Sonoma, CA
Built 1954 Load: 36.3 t ADT: 4,300
MOSCOW RD
FairOver: HILLSIDE
0.2 MI NW MAIN, Sonoma, CA
Built 1956 Load: 36.3 t ADT: 825
INTERSTATE 5 SB
FairOver: DEL PUERTO CREEK ROAD
10-STA-005-18.31, Stanislaus, CA
Built 1967 Load: 36.3 t ADT: 20,500
INTERSTATE 5 NB
FairOver: DEL PUERTO CREEK ROAD
10-STA-005-18.31, Stanislaus, CA
Built 1967 Load: 36.3 t ADT: 20,500
STATE ROUTE 32
FairOver: DEER CREEK
02-TEH-032-16.85, Tehama, CA
Built 1952 Load: 36.3 t ADT: 1,100
ARAMAYO WAY
FairOver: SACRAMENTO RIV OVERFLOW
0.8 MI W OF SH 99, Tehama, CA
Built 1958 Load: 36.3 t ADT: 2,000
ROAD 128
FairOver: WHITE RIVER
0.5 MI S OF AVE 40, Tulare, CA
Built 1957 Load: 36.3 t ADT: 325
INTERSTATE 205
FairOver: CALIFORNIA AQUEDUCT
04-ALA-205-0.28, Alameda, CA
Built 1966 Load: 36.6 t ADT: 122,000
GROVE WAY
FairOver: SAN LORENZO CREEK
0.02 MI NE OF MISSION BL, Alameda, CA
Built 1915 Load: 36.6 t ADT: 3,500
TABLE MTN BLVD
FairOver: GOLD RUN CREEK
0.4 MILES SOUTH OF HWY 70, Butte, CA
Built 1958 Load: 36.6 t ADT: 3,280
CAMINO RAMON
FairOver: SAN RAMON CREEK
0.2 MI S/O GREENBROOK DR, Contra Costa, CA
Built 1966 Load: 36.6 t ADT: 6,488
PARAISO DR
FairOver: SAN RAMON CREEK
0.5 MI E CAMINO RAMON, Contra Costa, CA
Built 1963 Load: 36.6 t ADT: 1,441
KINNEY BLVD
FairOver: COUNTY RD & RR
PORT CHICAGO HIGHWAY, Contra Costa, CA
Built 1945 Load: 36.6 t ADT: 20
STATE ROUTE 99 SB
FairOver: UP RR
06-KER-099-R43.42L, Kern, CA
Built 1970 Load: 36.6 t ADT: 30,500
AIRPORT ROAD
FairOver: SANDY CREEK
0.65 MI NE OF SR 119, Kern, CA
Built 1959 Load: 36.6 t ADT: 550
STATE ROUTE 110 SB
FairOver: SOLANO AVENUE
07-LA-110-25.09L-LA, Los Angeles, CA
Built 1942 Load: 36.6 t ADT: 183,000
INTERSTATE 210 EB
FairOver: POLK STREET
07-LA-210-R3.28-LA, Los Angeles, CA
Built 1969 Load: 36.6 t ADT: 38,000
WILLOW ST
FairOver: COYOTE CRK
0.1MI W/O I-605 FWY, Los Angeles, CA
Built 1962 Load: 36.6 t ADT: 28,620
STUDEBAKER RD S/B
FairOver: S C EDISON N CHAN
350FT N/O LOYNES DRIVE, Los Angeles, CA
Built 1966 Load: 36.6 t ADT: 48,767
TAMPA AVE
FairOver: LIMEKILN CHANNEL
0.2MI S/O NORDHOFF ST, Los Angeles, CA
Built 1971 Load: 36.6 t ADT: 40,785
CONWELL ST
FairOver: SAN DIMAS WASH
0.1MI N/O COVINA BLVD, Los Angeles, CA
Built 1968 Load: 36.6 t ADT: 1,010
Explorer Road
FairOver: Arroyo Seco
2.4KM N. OF I-210/Arroyo, Los Angeles, CA
Built 1971 Load: 36.6 t ADT: 3,492
AVENUE 18 1/2
FairOver: UP RR
EAST OF S.H. 99, Madera, CA
Built 1974 Load: 36.6 t ADT: 1,463
HOLTZEL ROAD
FairOver: DUTCH CREEK
2.6 MI FROM GREELEY RD, Mariposa, CA
Built 1955 Load: 36.6 t ADT: 180
PRKFLD-COALINGA RD
FairOver: LITTLE CHOLAME CREEK
5.0 MI N VINYARD CYN RD, Monterey, CA
Built 1972 Load: 36.6 t ADT: 170
BIG RANCH ROAD
FairOver: SALVADOR OVERFLOW
0.3 MI N TRANCAS ST, Napa, CA
Built 1988 Load: 36.6 t ADT: 8,768
FEATHER RIVER DR
FairOver: BRANCH CREEK
0.5 MI NW OF SH 36, Plumas, CA
Built 1966 Load: 36.6 t ADT: 400
INTERSTATE 15 SB
FairOver: MOHAWK DITCH
08-SBD-015-168.58L, San Bernardino, CA
Built 1963 Load: 36.6 t ADT: 18,500
INTERSTATE 40
FairOver: BUZZARD WASH
08-SBD-040-R138.26, San Bernardino, CA
Built 1967 Load: 36.6 t ADT: 8,750
INTERSTATE 40 WB
FairOver: ARGOS WASH
08-SBD-040-R43.84, San Bernardino, CA
Built 1968 Load: 36.6 t ADT: 8,150
INTERSTATE 40 EB
FairOver: ARGOS WASH
08-SBD-040-R43.84, San Bernardino, CA
Built 1968 Load: 36.6 t ADT: 8,150
INTERSTATE 40 WB
FairOver: BRISTOL MOUNTAIN WASH
08-SBD-040-R58.97L, San Bernardino, CA
Built 1970 Load: 36.6 t ADT: 8,150
INTERSTATE 15 NB
FairOver: CLEGHORN CANYON RD
08-SBD-015-R20.02, San Bernardino, CA
Built 1969 Load: 36.6 t ADT: 92,000
INTERSTATE 5 SB
FairOver: BNSF RY & AMTRAK
10-SJ-005-25.78-STKN, San Joaquin, CA
Built 1972 Load: 36.6 t ADT: 87,500
WIMAR ROAD
FairOver: INDIAN CREEK N BRANCH
1.2 MI S OF SR 26, San Joaquin, CA
Built 1956 Load: 36.6 t ADT: 34
HOLLENBECK
FairOver: DUCK CREEK
0.1 MI N OF SH 4, San Joaquin, CA
Built 1968 Load: 36.6 t ADT: 68
MOUNTAIN DR
FairOver: HOT SPRINGS CREEK
AT RIVEN ROCK RD, Santa Barbara, CA
Built 1965 Load: 36.6 t ADT: 588
TRIMBLE RD
FairOver: GUADALUPE RIVER
0.4 MI N/E OF US 101, Santa Clara, CA
Built 1961 Load: 36.6 t ADT: 43,300
QUARTZ VALLEY ROAD
FairOver: MILL CREEK
0.1 MI W E. QUARTZ VALLEY, Siskiyou, CA
Built 1980 Load: 36.6 t ADT: 395
BROWN ROAD
FairOver: ULATIS CREEK
1.5 MI E OF RTE 113, Solano, CA
Built 1963 Load: 36.6 t ADT: 81
WESTSIDE ROAD
FairOver: FOREMAN LANE
OVER FORMAN LANE, Sonoma, CA
Built 1961 Load: 36.6 t ADT: 3,200
LEVERONI RD
FairOver: CARRIGER CREEK
1.05 MI W OF SR 12, Sonoma, CA
Built 1972 Load: 36.6 t ADT: 6,000
Showing 15,401-15,450 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.