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
FASHION ISLAND DR
FairOver: MARINA LAGOON
0.5 MI E OF S NORFOLK ST, San Mateo, CA
Built 1967 Load: 23.0 t ADT: 13,240
JAMES FOWLER ROAD
FairOver: SAN PEDRO CREEK
WEST OF FAIRVIEW AVE, Santa Barbara, CA
Built 1980 Load: 23.0 t ADT: 5,100
PRIMAVERA ROAD
FairOver: CIENEGUITAS CREEK
0.1 MI E OF SR 154, Santa Barbara, CA
Built 1984 Load: 23.0 t ADT: 500
ASH CREEK ROAD
FairOver: ANDERSON CREEK
100' E BALLS FERRY RD, Shasta, CA
Built 1950 Load: 23.0 t ADT: 1,161
FITZPATRICK LANE
FairOver: FAY CREEK
0.9 MI N SALMON CREEK RD, Sonoma, CA
Built 1973 Load: 23.0 t ADT: 300
OLD MONTE RIO RD
FairOver: HILLSIDE
0.1 MI NE SANTA ROSA AVE, Sonoma, CA
Built 1980 Load: 23.0 t ADT: 100
INTERSTATE 5 SB
FairOver: ORESTIMBA CREEK
10-STA-005-5.73, Stanislaus, CA
Built 1967 Load: 23.0 t ADT: 17,500
STATE ROUTE 70 WB
FairOver: BEAR RIVER (RIO OSO)
03-SUT-070-8.09, Sutter, CA
Built 1961 Load: 23.0 t ADT: 15,800
CUTTING AVE
FairOver: SUTTER-BUTTE CANAL
0.2 MI EAST OF ST RTE 99, Sutter, CA
Built 1930 Load: 23.0 t ADT: 25
STATE ROUTE 36
FairOver: MILL CREEK
02-TEH-036-91.61, Tehama, CA
Built 1929 Load: 23.0 t ADT: 1,100
MANTON RD
FairOver: COLEMAN DITCH
8.4 MI N/E OF SH 36, Tehama, CA
Built 1954 Load: 23.0 t ADT: 524
OLD HWY 99 W
FairOver: MCCLURE CREEK
0.15 MI N GYLE RD, Tehama, CA
Built 1918 Load: 23.0 t ADT: 3,140
MAIN ST
FairOver: REEDS CREEK
0.1 MI S WILLOW ST, Tehama, CA
Built 1927 Load: 23.0 t ADT: 16,400
CAPAY RD
FairOver: SOUR GRASS CREEK
3.5 MI E OF RD 99 W, Tehama, CA
Built 1919 Load: 23.0 t ADT: 982
COFFEE CREEK ROAD
FairOver: SOUTH FORK COFFEE CREEK
14.5 MI W OF STATE RTE 3, Trinity, CA
Built 1979 Load: 23.0 t ADT: 76
AVE 280
FairOver: UP RR
AT SR99 OVER UP RR, Tulare, CA
Built 1960 Load: 23.0 t ADT: 2,900
PIRU CANYON ROAD
FairOver: REASONER CREEK
7.1 MI N CENTER STR., Ventura, CA
Built 1955 Load: 23.0 t ADT: 700
INTERSTATE 580
FairOver: SAN LEANDRO CREEK
04-ALA-580-R34.55-SLN, Alameda, CA
Built 1964 Load: 23.3 t ADT: 140,000
CENTER ST
FairOver: SAN LORENZO CREEK
0.3 MI S OF GROVE WAY, Alameda, CA
Built 1913 Load: 23.3 t ADT: 23,400
OLD STATE ROUTE 88
FairOver: WEST FORK CARSON RIVER
10-ALP-088-16.22, Alpine, CA
Built 1939 Load: 23.3 t ADT: 3,200
FRENCH BAR RD
FairOver: SOUTH FORK JACKSON CREEK
0.1 MI NE OF ST RTE 49, Amador, CA
Built 1949 Load: 23.3 t ADT: 800
STATE ROUTE 99
FairOver: CAMPBELL CREEK
03-BUT-099-45.70, Butte, CA
Built 1914 Load: 23.3 t ADT: 11,600
7 MILE LANE
FairOver: EDGAR SLOUGH OVERFLOW
0.25 MI N OF NELSON RD, Butte, CA
Built 1935 Load: 23.3 t ADT: 184
INTERSTATE 580 WB
FairOver: HILLSIDE
04-CC-580-R5.60-RCH, Contra Costa, CA
Built 1985 Load: 23.3 t ADT: 34,000
STATE ROUTE 145
FairOver: STINSON CANAL
06-FRE-145-17.18, Fresno, CA
Built 1951 Load: 23.3 t ADT: 5,400
S ENGLEHART AVE
FairOver: REEDLEY MAIN CANAL
0.3 MI N OF AMERICAN AVE, Fresno, CA
Built 1936 Load: 23.3 t ADT: 250
CHATEAU FRESNO AVE
FairOver: HERNDON CANAL
AT BARSTOW AVE, Fresno, CA
Built 1942 Load: 23.3 t ADT: 200
E JEFFERSON AVE
FairOver: ALTA EAST BRANCH CANAL
0.4 MI E OF CRAWFORD AVE, Fresno, CA
Built 1940 Load: 23.3 t ADT: 350
STATE ROUTE 162
FairOver: BIG BUTTE CREEK OVERFLOW
03-GLE-162-83.89, Glenn, CA
Built 1937 Load: 23.3 t ADT: 1,500
STATE ROUTE 178
FairOver: HILLSIDE
06-KER-178-13.74, Kern, CA
Built 1923 Load: 23.3 t ADT: 4,350
14TH AVE
FairOver: LAST CHANCE DITCH
0.8 MI N OF GRANGEVILLE, Kings, CA
Built 1957 Load: 23.3 t ADT: 2,841
SODA BAY RD
FairOver: ADOBE CREEK
2.7 MI E OF SR 29, Lake, CA
Built 1957 Load: 23.3 t ADT: 2,060
RD 304
FairOver: SOUTH FORK DILL SLOUGH
0.5 MI N/O RD 306, Lassen, CA
Built 1978 Load: 23.3 t ADT: 100
COUNTY ROAD 311
FairOver: DEEP CUT (BAXTER) CREEK
1.3 MI E OF CR A3, Lassen, CA
Built 1978 Load: 23.3 t ADT: 100
CASTAIC RD
FairOver: VIOLIN CRK
1.0MI N/O LAKE HUGHES RD, Los Angeles, CA
Built 1930 Load: 23.3 t ADT: 8,652
ARTERIAL ROAD
FairOver: FISH CREEK
NO DATA ENTERED, Madera, CA
Built 1974 Load: 23.3 t ADT: 50
SIR-FRANCIS DRAKE
FairOver: LAGUNITAS CREEK
SHAFTER BRIDGE, Marin, CA
Built 1982 Load: 23.3 t ADT: 3,000
STATE ROUTE 1
FairOver: ELK CREEK
01-MEN-001-31.35, Mendocino, CA
Built 1938 Load: 23.3 t ADT: 1,100
U.S. HIGHWAY 101
FairOver: OUTLET CRK & NCRA/NWP RR
01-MEN-101-57.67, Mendocino, CA
Built 1957 Load: 23.3 t ADT: 6,700
CEMETERY LANE
FairOver: GRIST CREEK
0.5 MI WEST OF SR 162, Mendocino, CA
Built 1960 Load: 23.3 t ADT: 72
DWIGHT WAY
FairOver: LIVINGSTON CANAL
0.2 MI N OLIVE AVE, Merced, CA
Built 1960 Load: 23.3 t ADT: 236
EUCALYPTUS AVENUE
FairOver: LIVINGSTON CANAL
0.2 MI W SULTANA DR, Merced, CA
Built 1940 Load: 23.3 t ADT: 448
MILES CREEK ROAD
FairOver: MILES CREEK
0.2 MI N VASSER AVENUE, Merced, CA
Built 1960 Load: 23.3 t ADT: 49
MERCED AVENUE
FairOver: HIGH LINE CANAL
0.5 MI SOUTH BLOSS AVE, Merced, CA
Built 1955 Load: 23.3 t ADT: 50
SAN JON RD
FairOver: MAIN CANAL
0.2 MI E SR 183, Monterey, CA
Built 1962 Load: 23.3 t ADT: 1,500
TRANCAS ST
FairOver: NAPA RIVER
1.3 MI E SR 29, Napa, CA
Built 1960 Load: 23.3 t ADT: 14,755
LODI LANE
FairOver: NAPA RIVER
0.2 MI W SILVERADO TRAIL, Napa, CA
Built 1930 Load: 23.3 t ADT: 682
MAIN STREET W/B
FairOver: SAN DIEGO CREEK CHANNEL
0.3 MI E JAMBOREE RD, Orange, CA
Built 1969 Load: 23.3 t ADT: 8,700
BELDEN TOWN ROAD
FairOver: NORTH FORK FEATHER RIVER
0.01 MI SOUTH OF SR 70, Plumas, CA
Built 1912 Load: 23.3 t ADT: 170
ROUTE 74
FairOver: ANTSELL ROCK CREEK
08-RIV-074-63.45, Riverside, CA
Built 1958 Load: 23.3 t ADT: 3,570
Showing 9,801-9,850 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.