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
ARUNDELL CIRCLE
FairOver: ARUNDELL BARRANCA
0.1 MI E ARRUNDELL AVE, Ventura, CA
Built 1979 Load: 24.0 t ADT: 2,000
STATE ROUTE 185
FairOver: SAN LEANDRO CREEK
04-ALA-185-5.82-SLN, Alameda, CA
Built 1901 Load: 24.3 t ADT: 25,000
I 80 EB
FairOver: UTILITY TUNNEL & PUC
04-ALA-080-2.00-OAK, Alameda, CA
Built 1939 Load: 24.3 t ADT: 133,000
BALDWIN ST
FairOver: ELMHURST CREEK
E/O HEGENBERGER RD, Alameda, CA
Built 1964 Load: 24.3 t ADT: 38,929
UNION CITY BLVD
FairOver: ALAMEDA CREEK
0.3 MI N/O WHIPPLE RD, Alameda, CA
Built 1958 Load: 24.3 t ADT: 23,000
SMITH ST
FairOver: ALAMEDA CREEK
0.1 KM WEST OF DYER ST, Alameda, CA
Built 1968 Load: 24.3 t ADT: 13,300
SANTA MARIA DR
FairOver: ALAMEDA CREEK
S/O ALVARADO NILES ROAD, Alameda, CA
Built 1965 Load: 24.3 t ADT: 3,545
DYER ST
FairOver: ALAMEDA CREEK
S/O ALVARADO NILES RD, Alameda, CA
Built 1970 Load: 24.3 t ADT: 25,900
HAMILTON STREET
FairOver: ARROYO VIEJO
HEGENBERGER RD MEDIAN, Alameda, CA
Built 1968 Load: 24.3 t ADT: 2,580
WICKS BLVD
FairOver: NO NAME DITCH
1.3 MI S FAIRWAY DR, Alameda, CA
Built 1967 Load: 24.3 t ADT: 9,900
HEGENBERGER RD EB
FairOver: ARROYO VIEJO
BTWN SR 185 & HAMILTON, Alameda, CA
Built 1950 Load: 24.3 t ADT: 46,294
BLUEBELL ROAD
FairOver: ALTAMONT CREEK TRIBUTARY
1.1 MI NORTH OF I-580, Alameda, CA
Built 1970 Load: 24.3 t ADT: 2,300
BLUEBELL ROAD
FairOver: ALTAMONT CREEK
1.3 MI NORTH OF I-580, Alameda, CA
Built 1970 Load: 24.3 t ADT: 2,300
BROADMOOR ST
FairOver: ALTAMONT CREEK
NORTH OF SKIFF RD, Alameda, CA
Built 1970 Load: 24.3 t ADT: 3,800
AIRWAY BLVD
FairOver: ARROYO LAS POSITAS
0.1 MI S/O I-580, Alameda, CA
Built 1972 Load: 24.3 t ADT: 21,350
FARNSWORTH ST
FairOver: ESTUDILLO CANAL DITCH
N OF BURKHART AVE, Alameda, CA
Built 1955 Load: 24.3 t ADT: 4,300
FOLSOM AVE
FairOver: TENNYSON FLOOD CNTRL CHN
E OF THACKERAY AVE, Alameda, CA
Built 1960 Load: 24.3 t ADT: 8,714
DELAWARE ST
FairOver: LAGUNA CREEK
FREMONT BLVD, Alameda, CA
Built 1954 Load: 24.3 t ADT: 2,500
HUNTWOOD AVE
FairOver: ALAMEDA CREEK
JUST S/E INDSTRL PKWY W, Alameda, CA
Built 1971 Load: 24.3 t ADT: 23,978
COLD WATER DR
FairOver: CROW CREEK
0.1 MI W/O CROW CANYON RD, Alameda, CA
Built 1970 Load: 24.3 t ADT: 950
INVERNESS ST
FairOver: ESTUDILLO CANAL
100 FT N BURKHART AVE, Alameda, CA
Built 1955 Load: 24.3 t ADT: 1,000
DEWEY ST
FairOver: ESTUDILLO CANAL
100 FT N BURKHART AVE, Alameda, CA
Built 1955 Load: 24.3 t ADT: 1,000
LUCILLE ST
FairOver: ARROYO SECO
200' S CHARLOTTE WAY, Alameda, CA
Built 1964 Load: 24.3 t ADT: 840
ESTUDILLO AVE
FairOver: SAN LEANDRO CREEK
350 FT S OF SYLVIAN CIRCL, Alameda, CA
Built 1986 Load: 24.3 t ADT: 1,000
W LAS POSITAS BLVD
FairOver: G-3 CHANNEL
1800 FT S OF FAIRLANDS DR, Alameda, CA
Built 1967 Load: 24.3 t ADT: 3,545
STONERIDGE DRIVE
FairOver: CHABOT CANAL
2000 FT S OF GIBRALTAR, Alameda, CA
Built 1967 Load: 24.3 t ADT: 3,545
STATE ROUTE 99
FairOver: CAT TAIL SLOUGH
03-BUT-099-5.34, Butte, CA
Built 1910 Load: 24.3 t ADT: 13,400
STATE ROUTE 99
FairOver: LINE CANAL
03-BUT-099-0.01, Butte, CA
Built 1917 Load: 24.3 t ADT: 15,300
RICHVALE HWY
FairOver: JUNCTION DRAW
03-BUT-099-13.16, Butte, CA
Built 1918 Load: 24.3 t ADT: 5,000
MIDWAY RD
FairOver: MOULTON SLOUGH
3 MI N RICHVALE RD, Butte, CA
Built 1918 Load: 24.3 t ADT: 6,630
GRAND AVE
FairOver: RUDY CREEK
W OF 14TH ST., Butte, CA
Built 1962 Load: 24.3 t ADT: 5,219
GRIDLEY COLUSA HWY
FairOver: SCHOHR DRAIN
0.6 MI E/O COLUSA CO LINE, Butte, CA
Built 1958 Load: 24.3 t ADT: 1,139
PENTZ ROAD
FairOver: HORSETHIEF CANYON
1 MI W WHEELOCK ROAD, Butte, CA
Built 1971 Load: 24.3 t ADT: 2,469
FIRST ST
FairOver: HAMILTON SLOUGH
0.2 MI S/O B ST IN BIGGS, Butte, CA
Built 1938 Load: 24.3 t ADT: 80
JOHNSON CLAN AVE
FairOver: LIVE OAK SLOUGH
0.2 MI W/O LARKIN RD, Butte, CA
Built 1950 Load: 24.3 t ADT: 110
AFTON RD
FairOver: MAIN DRAIN
3 MI E/O AGUAS FRIAS RD, Butte, CA
Built 1950 Load: 24.3 t ADT: 513
COAL CANYON ROAD
FairOver: GOLD RUN CREEK
EAST OF TABLE MOUNTAIN RD, Butte, CA
Built 1960 Load: 24.3 t ADT: 100
AGUAS FRIAS ROAD
FairOver: WESTERN CANAL-PRATT LATL
1.5 MI NORTH OF NELSON RD, Butte, CA
Built 1960 Load: 24.3 t ADT: 423
STATE ROUTE 12
FairOver: LIME CREEK
10-CAL-012-12.15, Calaveras, CA
Built 1939 Load: 24.3 t ADT: 8,000
STATE ROUTE 4
FairOver: WATERMAN CREEK
10-CAL-004-17.60, Calaveras, CA
Built 1941 Load: 24.3 t ADT: 7,900
HOGAN DAM ROAD
FairOver: COSGROVE CREEK
0.1 MI E JCT SR 26, Calaveras, CA
Built 1962 Load: 24.3 t ADT: 1,089
SHEEP RANCH RD
FairOver: MCKINNEY CREEK
0.4 MI SE MTN RANCH RD, Calaveras, CA
Built 1967 Load: 24.3 t ADT: 801
MILTON ROAD
FairOver: HUNTINGTON CREEK
1.6 MI NW ROCK CK RD MLTN, Calaveras, CA
Built 1967 Load: 24.3 t ADT: 1,000
MILTON RD
FairOver: S GULCH CREEK
2.6 MI NW ROCK CK RD MLTN, Calaveras, CA
Built 1967 Load: 24.3 t ADT: 1,000
COPPER COVE DRIVE
FairOver: BLACK CREEK
1 MI W O'BYRNE FERRY RD, Calaveras, CA
Built 1965 Load: 24.3 t ADT: 500
OLIVE ORCHARD RD
FairOver: INDIAN CREEK
300' WEST OF SR 26, Calaveras, CA
Built 1950 Load: 24.3 t ADT: 1,567
STATE ROUTE 20
FairOver: SALT CREEK
03-COL-020-8.05, Colusa, CA
Built 1940 Load: 24.3 t ADT: 4,950
SITES-LODOGA RD
FairOver: GRAPEVINE CREEK
14.6 MI W/O 1-5, Colusa, CA
Built 1971 Load: 24.3 t ADT: 285
OLD 99W
FairOver: STONE CORRAL CREEK OVFL
0.9 MI S OF WADLEIGH RD, Colusa, CA
Built 1915 Load: 24.3 t ADT: 1,976
OLD 99W
FairOver: FUNKS CREEK OVERFLOW
0.2 MI N WADLEIGH RD, Colusa, CA
Built 1915 Load: 24.3 t ADT: 642
Showing 10,001-10,050 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.