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
FOREST ROAD 610
Structurally DeficientOver: SOUTH FORK CASPAR CREEK
N OF INT OF FOREST RD 600, Mendocino, CA
Built 1965 ADT: 2
STATE PARK ROAD
Structurally DeficientOver: LITTLE RIVER
VAN DAMME STATE PARK, Mendocino, CA
Built 1951 ADT: 150
ROAD M1
Structurally DeficientOver: BLACK BUTTE RIVER
.3 MI. E. OF EEL RIV W.C., Mendocino, CA
Built 1986 ADT: 50
QUINLEY AVENUE
Structurally DeficientOver: BLACK RASCAL CREEK
0.6 MI SOUTH OF RTE 140, Merced, CA
Built 1962 ADT: 100
WASHINGTON ROAD
Structurally DeficientOver: EASTSIDE BYPASS
0.1 MI E HARMON RD, Merced, CA
Built 1968 ADT: 120
RUBY CANYON ROAD
Structurally DeficientOver: DRAINAGE KD RESERVOIR
S OLD MAN CANYON SEC 13 W, Monterey, CA
Built 2002 ADT: 1
PALISADES ROAD
Structurally DeficientOver: NACIMIENTO RIVER
N STEVE CREEK SEC 27, Monterey, CA
Built 1994 ADT: 1
GREENWOOD AVE
Structurally DeficientOver: GARNETT CREEK
.2 MI NE/O MYRTLEDALE RD, Napa, CA
Built 1904 ADT: 162
WHITEWATER CUTOFF
Structurally DeficientOver: WHITEWATER RIVER
0.3 MI. E/O ROUTE 10 FWY, Riverside, CA
Built 1923 ADT: 50
FRANKLIN BLVD
Structurally DeficientOver: MOKELUMNE RIVER OVERFLOW
1.8 MI N SAN JQUIN CO LIN, Sacramento, CA
Built 1930 ADT: 520
CLAY STATION ROAD
Structurally DeficientOver: BROWNS CREEK
1.2 MI N OF SR 104, Sacramento, CA
Built 1950 ADT: 2,311
YERMO RD
Structurally DeficientOver: MANIX WASH
4.4 MI NE HARVARD RD, San Bernardino, CA
Built 1929 ADT: 1
HUASNA TOWNSITE RD
Structurally DeficientOver: HUASNA RIVER
3.1 MI SE OF HUASNA, San Luis Obispo, CA
Built 1965 ADT: 288
BIANCHI LANE
Structurally DeficientOver: SAN LUIS OBISPO CREEK
0.2 MI W/O HIGUERA STR, San Luis Obispo, CA
Built 1905 ADT: 30
OLD COTTONWOOD CR
Structurally DeficientOver: COTTONWOOD CREEK
0.2 MI E/O COTTONWOOD CK, Siskiyou, CA
Built 1957 ADT: 10
WEST BEAVER ROAD
Structurally DeficientOver: WEST FORK BEAVER CREEK
BEAVER, Siskiyou, CA
Built 1983 ADT: 50
METHODIST CK ROAD
Structurally DeficientOver: S. FK. SALMON RIVER
FORKS, Siskiyou, CA
Built 1963 ADT: 20
CHINA MT. ROAD
Structurally DeficientOver: HOUSTON CREEK
CALLAHAN, Siskiyou, CA
Built 1974 ADT: 50
BOULDER ROAD
Structurally DeficientOver: EAST BOULDER CREEK
CALLAHAN, Siskiyou, CA
Built 1966 ADT: 50
TOM WALKER ROAD
Structurally DeficientOver: TOMPKINS CREEK
SCOTT BAR, Siskiyou, CA
Built 1988 ADT: 50
NO DATA ENTERED
Structurally DeficientOver: WEST BOULDER CREEK
CALLAHAN, Siskiyou, CA
Built 2004 ADT: 50
MAIN PRAIRIE RD
Structurally DeficientOver: ULATIS CREEK
0.3 MI E OF RTE 113, Solano, CA
Built 1962 ADT: 255
SWEETWTR SPRNGS RD
Structurally DeficientOver: PORTER CREEK
3.5 MI W OF WESTSIDE RD, Sonoma, CA
Built 1968 ADT: 140
FLOURNOY AVE
Structurally DeficientOver: BURCH CREEK
0.2 MI E KIRKWOOD RD, Tehama, CA
Built 1937 ADT: 123
AVENUE 404
Structurally DeficientOver: COTTONWOOD CREEK
0.1 MI WEST OF SR 245, Tulare, CA
Built 1936 ADT: 25
MOUNTAIN RD 109
Structurally DeficientOver: WHITE RIVER
8 MI SE FOUNTAIN SPRINGS, Tulare, CA
Built 1939 ADT: 180
M 112
Structurally DeficientOver: DEER CREEK
2.23 MI SE OF M120, Tulare, CA
Built 1956 ADT: 25
ROAD 16
Structurally DeficientOver: HOMELAND CANAL
3.0 MI N OF AVENUE 56, Tulare, CA
Built 1942 ADT: 175
WINDING ROAD
Structurally DeficientOver: STANISLAUS RIVER
NO DATA ENTERED, Tuolumne, CA
Built 1926 ADT: 50
WINDING ROAD
Structurally DeficientOver: BLUE CANYON CREEK
NO DATA ENTERED, Tuolumne, CA
Built 1968 ADT: 50
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
BYRON HWY
Structurally DeficientOver: CALIFORNIA AQUEDUCT
5.6 MI SOUTH OF SR 4, Contra Costa, CA
Built 1964 Load: 4.5 t ADT: 8,387
HAMILTON ROAD
Structurally DeficientOver: WEST BRANCH MILL CREEK
2.1 MILES EAST OF US 101, Del Norte, CA
Built 1950 Load: 4.9 t ADT: 25
WEST BRANCH ROAD
Structurally DeficientOver: WEST BRANCH MILL CREEK
5.4 MI S OF HAMILTON ROAD, Del Norte, CA
Built 1950 Load: 4.9 t ADT: 10
CHILD'S HILL ROAD
Structurally DeficientOver: EAST FORK MILL CREEK
5.3 MILES EAST OF US 101, Del Norte, CA
Built 1950 Load: 4.9 t ADT: 10
HOBDAY ROAD
Structurally DeficientOver: WEST BRANCH BADGER CREEK
330 FT E/O ALTA MESA RD, Sacramento, CA
Built 1960 Load: 5.5 t ADT: 1,010
CROSS STREET
Structurally DeficientOver: DEL ROSA CHANNEL
0.1 MI E CONEJO ST, San Bernardino, CA
Built 1940 Load: 5.8 t ADT: 100
CIRCLE TRAIL
Structurally DeficientOver: TOPANGA CYN CRK
25FT W/O TOPANGA CYN BLVD, Los Angeles, CA
Built 1936 Load: 6.2 t ADT: 204
HORSE CREEK RD
Structurally DeficientOver: KLAMATH RIVER
0.04 MI NORTH OF SR 96, Siskiyou, CA
Built 1930 Load: 7.5 t ADT: 21
ROAD 200A
Structurally DeficientOver: STONY CREEK
7 MI SW OF ROAD 206, Glenn, CA
Built 1960 Load: 8.1 t ADT: 63
GREEN VALLEY RD
Structurally DeficientOver: CASSERLY CREEK TRIB NO 1
4.1 MI N FREEDOM BLVD, Santa Cruz, CA
Built 1915 Load: 9.1 t ADT: 500
NAT TRAILS HWY
Structurally DeficientOver: SOMBRA DITCH
4.1 MI E OF AMBOY RD, San Bernardino, CA
Built 1930 Load: 9.4 t ADT: 806
VESTAL ROAD
Structurally DeficientOver: SOUTH FORK COTTONWOOD CR
1.8 MI N/W PETTY JOHN RD, Tehama, CA
Built 1949 Load: 10.0 t ADT: 50
KEYES ROAD
Structurally DeficientOver: T.I.D. MAIN CANAL
0.8 MI W/O HICKMAN RD, Stanislaus, CA
Built 1921 Load: 11.3 t ADT: 2,313
WILMINGTON AVE
Structurally DeficientOver: COMPTON CRK
0.5MI S/O ROSECRANS AVE, Los Angeles, CA
Built 1938 Load: 12.6 t ADT: 29,520
ROAD 24N28
Structurally DeficientOver: SLATE CREEK
SLATE CREEK, Plumas, CA
Built 1956 Load: 13.9 t ADT: 50
VESTAL ROAD
Structurally DeficientOver: COLDFORK COTTONWOOD CRK
2.1 MI N PETTY JOHN ROAD, Tehama, CA
Built 1921 Load: 15.6 t ADT: 60
SOLEDAD CYN RD
Structurally DeficientOver: LACMTA AND SCRRA TRACK
0.1MI E/O AGUA DULCE CYN, Los Angeles, CA
Built 1938 Load: 16.2 t ADT: 3,162
PILARCITOS CREEK R
Structurally DeficientOver: PILARCITOS CREEK
0.46 MI N OF S.H. 92, San Mateo, CA
Built 1910 Load: 16.2 t ADT: 42
FRENCHTOWN RD
Structurally DeficientOver: DRY CREEK
2.7 MI N OF MARYSVILLE RD, Yuba, CA
Built 1927 Load: 17.2 t ADT: 490
Showing 26,951-27,000 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.
| Publisher | Kiznis Studio |
| Sources | FHWA National Bridge Inventory, public U.S. government datasets |