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
COMPTON BLVD
Structurally DeficientOver: COMPTON CRK
0.2MI E/O WILMINGTON AVE, Los Angeles, CA
Built 1938 Load: 17.8 t ADT: 27,136
INTERSTATE 80
Structurally DeficientOver: UP RR, BNSF RY, & AMTRAK
03-PLA-080-45.71, Placer, CA
Built 1961 Load: 18.8 t ADT: 29,000
STATE ROUTE 41
Structurally DeficientOver: KINGS RIVER
06-KIN-041-32.26, Kings, CA
Built 1942 Load: 19.4 t ADT: 7,700
WILDWOOD-MAD RIVER
Structurally DeficientOver: DUBAKELLA CREEK
NO DATA ENTERED, Trinity, CA
Built 1972 Load: 19.4 t ADT: 50
EUREKA CANYON RD
Structurally DeficientOver: SHINGLE MILL GULCH
2.0 MI N RIDER RD, Santa Cruz, CA
Built 1950 Load: 20.1 t ADT: 500
COUNTY RD 306
Structurally DeficientOver: SALT CREEK
0.3 MI S OF RD #200, Glenn, CA
Built 1948 Load: 20.4 t ADT: 300
PRICE CREEK RD
Structurally DeficientOver: PRICE CREEK
0.7 MI SOUTH OF SR 299, Trinity, CA
Built 1950 Load: 20.4 t ADT: 20
STATE ROUTE 128
Structurally DeficientOver: HOPPER SLOUGH
04-NAP-128-5.12, Napa, CA
Built 1921 Load: 22.0 t ADT: 2,075
WATMAUGH ROAD
Structurally DeficientOver: FOWLER CREEK
0.3 MI E ARNOLD, Sonoma, CA
Built 1920 Load: 22.4 t ADT: 3,300
ACTUALLY RD 28N03
Structurally DeficientOver: INDIAN CREEK
NO DATA ENTERED, Plumas, CA
Built 1965 Load: 23.3 t ADT: 50
ROAD 28N03
Structurally DeficientOver: INDIAN CREEK
INDIAN CREEK, Plumas, CA
Built 1965 Load: 23.3 t ADT: 50
32017
Structurally DeficientOver: BUCKEYE CREEK
NO DATA ENTERED, Mono, CA
Built 1960 Load: 23.7 t ADT: 50
SWANTON RD
Structurally DeficientOver: BIG CREEK
3 MI NW OF SR 1, Santa Cruz, CA
Built 1950 Load: 24.0 t ADT: 500
LAMBERT LANE
Structurally DeficientOver: ROBINSON CREEK
0.1 MI W OF SR 128, Mendocino, CA
Built 1954 Load: 24.3 t ADT: 379
RANCHO RIO AVENUE
Structurally DeficientOver: NEWELL CREEK
0.1 MI E NEWELL CREEK RD, Santa Cruz, CA
Built 1958 Load: 24.6 t ADT: 500
AFTON ROAD
Structurally DeficientOver: BUTTE CREEK
AT GLENN CO LINE, Butte, CA
Built 1914 Load: 24.9 t ADT: 122
NO DATA ENTERED
Structurally DeficientOver: NO DATA ENTERED
S21 T1N R6E, Humboldt, CA
Built 1980 Load: 25.6 t ADT: 50
AVE 25
Structurally DeficientOver: ASH SLOUGH
0.5 MI W RD 13, Madera, CA
Built 1954 Load: 25.6 t ADT: 950
STATE ROUTE 299
Structurally DeficientOver: PIT RIVER
02-MOD-299-17.95, Modoc, CA
Built 1962 Load: 25.6 t ADT: 1,200
S WALNUT AVE
Structurally DeficientOver: RIVERDALE DITCH
0.02 MI S OF RIVERDALE AV, Fresno, CA
Built 1940 Load: 25.9 t ADT: 200
PANOCHE ROAD
Structurally DeficientOver: TRES PINOS CREEK
6 MI E OF SH 25, San Benito, CA
Built 1963 Load: 26.6 t ADT: 800
SECOND STREET
Structurally DeficientOver: HISTORIC WARM CREEK
0.1 MI E ARROWHEAD AVE, San Bernardino, CA
Built 1965 Load: 26.9 t ADT: 20,400
STATE ROUTE 99 NB
Structurally DeficientOver: N BRANCH TULE RIVER
06-TUL-099-22.74, Tulare, CA
Built 1949 Load: 26.9 t ADT: 21,500
STATE ROUTE 1
Structurally DeficientOver: TRANCAS CREEK
07-LA-001-56.71, Los Angeles, CA
Built 1927 Load: 27.5 t ADT: 17,100
RIVER RD
Structurally DeficientOver: HUER HUERO CREEK
1.55 MI S WELLSONA AVE, San Luis Obispo, CA
Built 1965 Load: 28.2 t ADT: 569
33007: BUTTE CREEK
Structurally DeficientOver: Butte Creek
40 mi. SE of Fortuna, Humboldt, CA
Built 1980 Load: 29.5 t ADT: 50
ROAD 168
Structurally DeficientOver: ST JOHNS RIVER
0.7 MI N OF AVE 308, Tulare, CA
Built 1947 Load: 30.5 t ADT: 1,000
STATE ROUTE 99
Structurally DeficientOver: LOG CABIN CREEK
03-SAC-099-2.36, Sacramento, CA
Built 1958 Load: 32.4 t ADT: 58,000
EAST RANGE RD
Structurally DeficientOver: STORM DRAINAGE
0.70 MI E OF FLAGPOLE MSR, San Bernardino, CA
Built 2011 Load: 32.7 t ADT: 100
BAKER(O'CONNER) RD
Structurally DeficientOver: BRICKYARD CREEK
0.3 MI N WALNUT ST, Tehama, CA
Built 1960 Load: 33.4 t ADT: 3,000
C. R. 29
Structurally DeficientOver: CHICKAHOMINY SLOUGH
2.53 MI W OF C. R. 88, Yolo, CA
Built 1917 Load: 33.4 t ADT: 150
MILL CREEK RD
Structurally DeficientOver: MILL CREEK
5.4 MI W OF WESTSIDE RD, Sonoma, CA
Built 1961 Load: 34.0 t ADT: 210
BIG CANYON ROAD
Structurally DeficientOver: BIG CANYON CREEK
8 1/4 MI N OF SR 175, Lake, CA
Built 1930 Load: 35.6 t ADT: 304
SERVICE ROAD
Structurally DeficientOver: PEDESTRIAN WALKWAY
Livermore VAMC 4951 Arroy, Alameda, CA
Built 1923 Load: 36.4 t
NOVATO BLVD
Structurally DeficientOver: BOWMAN CANYON
1 MILE N INTXN SUTRO AVE., Marin, CA
Built 1948 Load: 37.3 t ADT: 3,056
MILPITAS ROAD
Structurally DeficientOver: DRAINAGE SAN ANTONIO RIV
W BEAR CANYON SEC 2/5, Monterey, CA
Built 2006 Load: 42.1 t ADT: 10
BIG CANYON RD
Structurally DeficientOver: BIG CANYON CREEK
10 MI N OF SR 175, Lake, CA
Built 1956 Load: 43.4 t ADT: 208
MAIN ST
Structurally DeficientOver: VENTURA RIVER
0.5 MI W OF VENTURA AVE, Ventura, CA
Built 1932 Load: 54.8 t ADT: 6,853
INDEPENDENCE ROAD
Structurally DeficientOver: INDEPENDENCE CREEK
CLEAR CREEK, Siskiyou, CA
Built 1970 Load: 90.8 t ADT: 20
HYAMPOM ROAD
Structurally DeficientOver: LITTLE CREEK
6.0 MI W OF SR 3, Trinity, CA
Built 1955 Load: 99.8 t ADT: 330
Showing 27,001-27,040 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 |