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 299
FairOver: PIT RIVER OVERFLOW
02-LAS-299-12.27, Lassen, CA
Built 1925 Load: 32.1 t ADT: 1,800
GARNIER RD
FairOver: LONG VALLEY CREEK
2.0 MI N OF US HWY 395, Lassen, CA
Built 1956 Load: 32.1 t ADT: 500
INTERSTATE 405
FairOver: MC HELEN AVE
07-LA-405-8.45-LBCH, Los Angeles, CA
Built 1961 Load: 32.1 t ADT: 237,800
N405 - N710 CONN
FairOver: LOS ANGELES RIVER
07-LA-405-7.40-LBCH, Los Angeles, CA
Built 1963 Load: 32.1 t ADT: 23,300
FOOTHILL BLVD
FairOver: BIG DALTON WASH
0.4MI E/O LORAINE AVE, Los Angeles, CA
Built 1960 Load: 32.1 t ADT: 12,607
WARDLOW RD E
FairOver: LOS ANGELES RIV
0.1MI E/O I-710 FWY, Los Angeles, CA
Built 1950 Load: 32.1 t ADT: 26,141
VICTORIA ST
FairOver: PRIVATE DRN #212
0.2MI E/O MAIN ST, Los Angeles, CA
Built 1966 Load: 32.1 t ADT: 18,300
HIGUERA ST
FairOver: BALLONA CR
0.5MI W/O LA CIENEGA BL, Los Angeles, CA
Built 1938 Load: 32.1 t ADT: 7,421
6TH ST OFF RAMP
FairOver: SAN FRANCISCO / GOLDEN
0.2MI W/O MAGNOLIA AVE, Los Angeles, CA
Built 1956 Load: 32.1 t ADT: 11,433
STATE ROUTE 140
FairOver: MILES CREEK
10-MPA-140-3.50, Mariposa, CA
Built 1928 Load: 32.1 t ADT: 4,650
BRANNON AVE
FairOver: COLONY MAIN CANAL
0.55 MI N SHAIN AVE, Merced, CA
Built 1966 Load: 32.1 t ADT: 1,000
CR 71
FairOver: CANYON CREEK
5 MI S/W CENTERVILLE RD, Modoc, CA
Built 1986 Load: 32.1 t ADT: 150
CALIFORNIA BLVD
FairOver: NAPA CREEK
0.2 MI N FIRST ST, Napa, CA
Built 1990 Load: 32.1 t ADT: 13,986
BECKWOURTH GRNVLE
FairOver: LIGHTS CRK (DEADFALL BR)
JNCT DIAMOND MTN RD, Plumas, CA
Built 1947 Load: 32.1 t ADT: 345
STATE ROUTE 16
FairOver: DEER CREEK OVERFLOW
03-SAC-016-13.92, Sacramento, CA
Built 1948 Load: 32.1 t ADT: 11,050
FRANKLIN BLVD
FairOver: DRAINAGE DITCH
0.4 MI N HOOD-FRANKLIN RD, Sacramento, CA
Built 1933 Load: 32.1 t ADT: 2,346
65TH ST EXPWY SB
FairOver: MORRISON CREEK
0.1 MI S OF LEMON HILL, Sacramento, CA
Built 1970 Load: 32.1 t ADT: 10,478
STATE ROUTE 210 WB
FairOver: GOLDEN AVENUE
08-SBD-210-R25.21-SBD, San Bernardino, CA
Built 1971 Load: 32.1 t ADT: 69,000
INTERSTATE 40 WB
FairOver: ORANGE BLOSSOM WASH
08-SBD-040-R71.75, San Bernardino, CA
Built 1972 Load: 32.1 t ADT: 16,500
INTERSTATE 40 EB
FairOver: ORANGE BLOSSOM WASH
08-SBD-040-R71.75, San Bernardino, CA
Built 1972 Load: 32.1 t ADT: 16,500
MT VERNON AVE
FairOver: UP RR & AMTRAK
3.1 MI S RTE I-10, San Bernardino, CA
Built 1967 Load: 32.1 t ADT: 10,432
ANDERSON ST
FairOver: SAN TIMOTEO CREEK
0.25 MI S OF I-10, San Bernardino, CA
Built 1971 Load: 32.1 t ADT: 26,063
INTERSTATE 15 NB
FairOver: SO CENTRE CITY PARKWAY
11-SD-015-M27.76, San Diego, CA
Built 1977 Load: 32.1 t ADT: 120,000
LAKE WOHLFORD RD
FairOver: ESCONDIDO CREEK
1.9MI E/O E. VALLEY PKWY, San Diego, CA
Built 1957 Load: 32.1 t ADT: 5,190
INTERSTATE 5 NB
FairOver: DOWNING AVENUE
10-SJ-005-R23.66, San Joaquin, CA
Built 1971 Load: 32.1 t ADT: 43,750
CENTRAL EXPWY
FairOver: STEVENS CREEK
NEAR SH 85, Santa Clara, CA
Built 1967 Load: 32.1 t ADT: 47,000
CENTRAL EXPWY
FairOver: STEVENS CREEK
NEAR SH 85, Santa Clara, CA
Built 1967 Load: 32.1 t ADT: 46,000
LAWRENCE EXPWY
FairOver: UP RR,FRENCH ST,SAN ZENO
0.25 MI SOUTH KIFER RD, Santa Clara, CA
Built 1963 Load: 32.1 t ADT: 69,000
CAMDEN AVE
FairOver: GUADALUPE CREEK
EAST OF HICKS RD, Santa Clara, CA
Built 1967 Load: 32.1 t ADT: 30,000
INTERSTATE 5 NB
FairOver: LAKEHEAD ROAD
02-SHA-005-R42.32, Shasta, CA
Built 1972 Load: 32.1 t ADT: 8,600
G STREET
FairOver: NAPA RIVER
1 MILE WEST OF SR 29, Solano, CA
Built 1934 Load: 32.1 t ADT: 5,743
US HIGHWAY 101 SB
FairOver: LYTTON SPRINGS ROAD
04-SON-101-R38.56, Sonoma, CA
Built 1974 Load: 32.1 t ADT: 13,500
US HIGHWAY 101 NB
FairOver: LYTTON SPRINGS ROAD
04-SON-101-R38.56, Sonoma, CA
Built 1974 Load: 32.1 t ADT: 14,250
KING RIDGE RD
FairOver: BEARPEN CREEK
4.1 MI N FORT ROSS RD, Sonoma, CA
Built 1973 Load: 32.1 t ADT: 200
STWRT PT-SKGG SPRG
FairOver: HILLSIDE
26.5 MI E OF SR 1, Sonoma, CA
Built 2003 Load: 32.1 t ADT: 300
ROAD 168
FairOver: TULARE IRRIG DIST CANAL
0.1 MI N OF SR 198, Tulare, CA
Built 1954 Load: 32.1 t ADT: 720
AVE 280(VISALIA RD
FairOver: OUTSIDE CREEK
0.75 MI W OF RD 180, Tulare, CA
Built 1965 Load: 32.1 t ADT: 3,200
RD 144
FairOver: WHITE RIVER
0.5 MI S OF AVE 40, Tulare, CA
Built 1951 Load: 32.1 t ADT: 1,000
Parker Dam Road
FairOver: Colorado River
6 m NE of Parker, AZ, San Bernardino, CA
Built 1934 Load: 32.3 t ADT: 360
Parker Dam Road
FairOver: Colorado River
6 m NE of Parker, AZ, San Bernardino, CA
Built 1934 Load: 32.3 t ADT: 360
I580-ISABEL AVE
FairOver: ARROYO LAS POSITAS
04-ALA-580-13.86, Alameda, CA
Built 2011 Load: 32.4 t ADT: 1,000
INTERSTATE 580
FairOver: COTTONWOOD CREEK
04-ALA-580-15.63, Alameda, CA
Built 1972 Load: 32.4 t ADT: 217,000
INTERSTATE 580
FairOver: RANCHO DRAIN
04-ALA-580-17.57-PLE, Alameda, CA
Built 1970 Load: 32.4 t ADT: 221,000
INTERSTATE 580 EB
FairOver: TASSAJARA CREEK
04-ALA-580-18.32-PLE, Alameda, CA
Built 1966 Load: 32.4 t ADT: 102,500
STATE ROUTE 112
FairOver: UP RR, CARDEN & BEECHER
04-ALA-112-R0.06-SLN, Alameda, CA
Built 1982 Load: 32.4 t ADT: 41,250
INTERSTATE 580 EB
FairOver: DEMARCUS BLVD (BARTD)
04-ALA-580-19.35-PLE, Alameda, CA
Built 1994 Load: 32.4 t ADT: 127,000
INTERSTATE 580 WB
FairOver: DEMARCUS BLVD (BARTD)
04-ALA-580-19.35-PLE, Alameda, CA
Built 1994 Load: 32.4 t ADT: 127,000
INTERSTATE 580
FairOver: CERRITO CREEK
04-ALA-580-48.04-ALB, Alameda, CA
Built 1991 Load: 32.4 t ADT: 99,000
INTERSTATE 580 EB
FairOver: STROBRIDGE AVE
04-ALA-580-30.36, Alameda, CA
Built 1988 Load: 32.4 t ADT: 102,000
INTERSTATE 580 WB
FairOver: STROBRIDGE AVE
04-ALA-580-30.36, Alameda, CA
Built 1989 Load: 32.4 t ADT: 102,000
Showing 12,151-12,200 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.