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 5 SB
FairOver: DOWNING AVENUE
10-SJ-005-R23.66, San Joaquin, CA
Built 1971 Load: 22.4 t ADT: 43,750
US HIGHWAY 101 NB
FairOver: NOJOQUI CREEK
05-SB-101-55.66, Santa Barbara, CA
Built 1938 Load: 22.4 t ADT: 11,000
PUEBLO ST
FairOver: MISSION CREEK
0.1 MI W OAK PARK LANE, Santa Barbara, CA
Built 1958 Load: 22.4 t ADT: 4,170
CARPENTERIA ST
FairOver: SYCAMORE CREEK
BTWN SOLEDAD & CANADA ST, Santa Barbara, CA
Built 1925 Load: 22.4 t ADT: 4,700
YUBA DRIVE
FairOver: STEVENS CREEK
BTWN SR 85 & SR 82, Santa Clara, CA
Built 1924 Load: 22.4 t ADT: 500
ARQUES AVE
FairOver: CALABAZAS CREEK
0.5 MI E LAWRENCE EXPWY, Santa Clara, CA
Built 1976 Load: 22.4 t ADT: 14,200
GRAHAM HILL RD
FairOver: BEAN CREEK
@ EAST ZAYANTE ROAD, Santa Cruz, CA
Built 1936 Load: 22.4 t ADT: 14,270
SODA CREEK ROAD
FairOver: SODA CREEK
0.3 MI SE I-5, Shasta, CA
Built 1970 Load: 22.4 t ADT: 180
MACARTHUR STREET
FairOver: NATHANSON CREEK
AUSTIN AVE, Sonoma, CA
Built 1965 Load: 22.4 t ADT: 2,000
COOPERSTOWN ROAD
FairOver: DRY CREEK TRIBUTARY
6.5 MI NW JCT GRANGE RD, Stanislaus, CA
Built 1920 Load: 22.4 t ADT: 35
KANSAS AVENUE
FairOver: LONG GULCH
1.05 MI EAST OF SR 99, Tehama, CA
Built 1957 Load: 22.4 t ADT: 132
STATE ROUTE 3
FairOver: STUART FORK
02-TRI-003-43.93, Trinity, CA
Built 1960 Load: 22.4 t ADT: 865
13 DIPS ROAD
FairOver: SALT CREEK
1.2 MI EAST OF S.R. 3, Trinity, CA
Built 1951 Load: 22.4 t ADT: 50
STATE ROUTE 99 SB
FairOver: N BRANCH TULE RIVER
06-TUL-099-22.74, Tulare, CA
Built 1931 Load: 22.4 t ADT: 21,500
ROAD 152
FairOver: S BRANCH TULE RIVER
0.7 MI N/O AVE 168, Tulare, CA
Built 1943 Load: 22.4 t ADT: 980
ROAD 148
FairOver: TULARE IRRIG DIST CANAL
0.8 MI S OF AVE 280, Tulare, CA
Built 1947 Load: 22.4 t ADT: 75
COUNTY ROAD 102
FairOver: CACHE CREEK
3.5 MI N OF I-5, Yolo, CA
Built 1955 Load: 22.4 t ADT: 6,200
Picacho Road
FairOver: All American Canal
7m north of Yuma, AZ, Imperial, CA
Built 1936 Load: 22.5 t ADT: 50
DURHAM-PENTZ RD
FairOver: HAYES CANYON
0.8 MI E OF S.R. 99, Butte, CA
Built 1970 Load: 22.7 t ADT: 7,146
RICHVALE W RD
FairOver: HIGH GRAVITY LATERAL
0.5 MI E WICKMAN RD, Butte, CA
Built 1947 Load: 22.7 t ADT: 274
NELSON RD
FairOver: EDGAR SLOUGH OVERFLOW
0.1 MI E OF 7 MI LANE, Butte, CA
Built 1930 Load: 22.7 t ADT: 50
HOGAN DAM RD
FairOver: SLATE CREEK
6.3 MI S/O SR 26, Calaveras, CA
Built 1959 Load: 22.7 t ADT: 196
LURLINE RD
FairOver: LURLINE CREEK
1.3 MI E OF DANLEY RD, Colusa, CA
Built 1930 Load: 22.7 t ADT: 23
GREENBROOK DR
FairOver: SAN RAMON CREEK
0.3 MI E CAMINO RAMON, Contra Costa, CA
Built 1965 Load: 22.7 t ADT: 7,643
BREEN MEMORIAL RD
FairOver: MILL CREEK
JEDEDIAH SMITH STATE PARK, Del Norte, CA
Built 1949 Load: 22.7 t ADT: 100
UPPER TRUCKEE RD
FairOver: UPPER TRUCKEE RIVER
3.7 MI S/O SR 50, El Dorado, CA
Built 1942 Load: 22.7 t ADT: 1,020
W CHURCH AVE
FairOver: DRY CREEK CANAL
0.07 MI EAST OF VALENTINE, Fresno, CA
Built 1925 Load: 22.7 t ADT: 1,200
STATE ROUTE 162
FairOver: CAMPBELL SLOUGH
03-GLE-162-82.01, Glenn, CA
Built 1916 Load: 22.7 t ADT: 1,500
US HIGHWAY 101 SB
FairOver: EUREKA SLOUGH
01-HUM-101-79.78-EUR, Humboldt, CA
Built 1943 Load: 22.7 t ADT: 17,000
U.S. HIGHWAY 101
FairOver: GREENLAW CREEK
01-HUM-101-R45.57, Humboldt, CA
Built 1966 Load: 22.7 t ADT: 6,100
STATE ROUTE 255
FairOver: MIDDLE CHANNEL
01-HUM-255-0.67-EUR, Humboldt, CA
Built 1971 Load: 22.7 t ADT: 7,300
PINE CREEK RD
FairOver: SOCTISH CREEK
2.9 MI N OF BAIR RD, Humboldt, CA
Built 1950 Load: 22.7 t ADT: 437
MUDD RD
FairOver: WESTSIDE MAIN CANAL
0.3 MI W/O FORRESTER RD, Imperial, CA
Built 1950 Load: 22.7 t ADT: 50
CECIL AVE
FairOver: FRIANT-KERN CANAL
0.5 MI EAST OF ZACHARY AV, Kern, CA
Built 1949 Load: 22.7 t ADT: 2,260
EVERETT AVE
FairOver: LAST CHANCE DITCH
0.2 MI E OF 13TH AVE, Kings, CA
Built 1975 Load: 22.7 t ADT: 100
COPSEY CREEK WAY
FairOver: COPSEY CREEK
0.05 MI W QUARTERHORSE LN, Lake, CA
Built 1965 Load: 22.7 t ADT: 200
BIEBER LOOKOUT RD
FairOver: ASH CREEK
2.3 MI N OF S.H. 299, Lassen, CA
Built 1966 Load: 22.7 t ADT: 800
FIFTH ST
FairOver: PACOIMA WASH
0.5MI E/O MACLAY AVE, Los Angeles, CA
Built 1953 Load: 22.7 t ADT: 4,141
STATE ROUTE 145
FairOver: COTTONWOOD CREEK
06-MAD-145-18.41, Madera, CA
Built 1940 Load: 22.7 t ADT: 6,200
GLACIER POINT ROAD
FairOver: BRIDALVEIL CREEK
8.8 miles east from El Po, Mariposa, CA
Built 1933 Load: 22.7 t ADT: 1,517
STATE ROUTE 162
FairOver: RODEO CREEK
01-MEN-162-10.08, Mendocino, CA
Built 1940 Load: 22.7 t ADT: 860
IRR SHERWOOD ROAD
FairOver: SHERWOOD CREEK
10.1 MI NE OF US 101, Mendocino, CA
Built 1947 Load: 22.7 t ADT: 139
ROAD B
FairOver: SALT HOLLOW CREEK
0.8 MI EAST OF EAST ROAD, Mendocino, CA
Built 1967 Load: 22.7 t ADT: 399
BONNER ROAD
FairOver: BEAR CREEK
0.8 MI N BEAR CREEK ROAD, Merced, CA
Built 1960 Load: 22.7 t ADT: 38
ROBINSON ROAD
FairOver: MAIN CANAL
1.8 MI E SNELLING ROAD, Merced, CA
Built 1950 Load: 22.7 t ADT: 45
STATE ROUTE 1
FairOver: LITTLE SUR RIVER
05-MON-001-56.10, Monterey, CA
Built 1953 Load: 22.7 t ADT: 4,300
BRADLEY RD
FairOver: SALINAS RIVER
JUST EAST OF US HWY 101, Monterey, CA
Built 1931 Load: 22.7 t ADT: 210
SPRING MOUNTAIN RD
FairOver: HILLSIDE
3 MI WEST OF MADRONA AVE, Napa, CA
Built 2009 Load: 22.7 t ADT: 450
SODA SPRINGS ROAD
FairOver: N FK AMERICAN RIVER
9 MI S OF SODA SPRINGS, Placer, CA
Built 1900 Load: 22.7 t ADT: 125
FDR 96
FairOver: DUNCAN CREEK
S26 T15N R13E, Placer, CA
Built 1954 Load: 22.7 t ADT: 50
Showing 9,701-9,750 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.