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
STATE ROUTE 126 EB
FairOver: SANTA PAULA CREEK
07-VEN-126-R12.70-SPA, Ventura, CA
Built 1965 Load: 33.4 t ADT: 18,250
STATE ROUTE 118
FairOver: ARROYO DEL TAPO CHANNEL
07-VEN-118-R26.80-SIMV, Ventura, CA
Built 1967 Load: 33.4 t ADT: 70,000
Kloke Road
FairOver: All-American Canal
Within City of Calexico, Imperial, CA
Built 1965 Load: 33.5 t ADT: 1,800
HEMBREE LANE
FairOver: POOL CREEK
0.4 MI N SHILO RD, Sonoma, CA
Built 1962 Load: 33.5 t ADT: 8,100
CHILNUALNA FALLS R
FairOver: CHILNUALNA CREEK
Vicinity of Wawona. Proc, Mariposa, CA
Built 1996 Load: 33.6 t ADT: 25
COLD SPRINGS CAMPG
FairOver: EAST FORK KAWEAH RIVER
23.6 MI. EAST OF JCT. HWY, Tulare, CA
Built 1957 Load: 33.6 t ADT: 20
BERNAL AVE
FairOver: ARROYO DE LA LAGUNA
0.15 MI E/O FOOTHILL RD, Alameda, CA
Built 1941 Load: 33.7 t ADT: 10,200
STATE ROUTE 70
FairOver: DUDLEY CREEK
03-BUT-070-18.50, Butte, CA
Built 1963 Load: 33.7 t ADT: 20,700
HAMILTON RD
FairOver: BIGGS EXTENSION CANAL
1.4 MI E/O RICETON HWY, Butte, CA
Built 1940 Load: 33.7 t ADT: 70
STATE ROUTE 16
FairOver: BEAR CREEK
03-COL-016-R3.35, Colusa, CA
Built 1964 Load: 33.7 t ADT: 630
MARSH CREEK RD
FairOver: MARSH CREEK
6.8 MI E MORGAN TERRITORY, Contra Costa, CA
Built 1981 Load: 33.7 t ADT: 3,979
STATE ROUTE 180
FairOver: ALTA MAIN CANAL
06-FRE-180-78.60, Fresno, CA
Built 1959 Load: 33.7 t ADT: 4,375
N FIRST ST
FairOver: HERNDON CANAL
SOUTH OF SHIELDS AVE, Fresno, CA
Built 1954 Load: 33.7 t ADT: 17,322
STATE ROUTE 96
FairOver: KLAMATH RIVER
01-HUM-096-22.95, Humboldt, CA
Built 1949 Load: 33.7 t ADT: 710
STATE ROUTE 299
FairOver: BLUE LAKE BLVD
01-HUM-299-R5.45, Humboldt, CA
Built 1970 Load: 33.7 t ADT: 9,700
WHISTLER RD
FairOver: UP RR
0.07 MI EAST OF SR 99, Kern, CA
Built 1970 Load: 33.7 t ADT: 450
24TH AVE
FairOver: KINGS RIVER
0.2 M S ELGIN AVE, Kings, CA
Built 1974 Load: 33.7 t ADT: 400
WOLF CREEK ROAD
FairOver: WOLF CREEK
IN SPRING VALLEY LAKE DEV, Lake, CA
Built 1967 Load: 33.7 t ADT: 220
INTERSTATE 210 EB
FairOver: MACLAY STREET
07-LA-210-R4.94-LA, Los Angeles, CA
Built 1969 Load: 33.7 t ADT: 60,500
HONOLULU AV-E210 O
FairOver: HONOLULU AVE
07-LA-210-R15.75-GNDL, Los Angeles, CA
Built 1972 Load: 33.7 t ADT: 10,680
WASHINGTON BLVD
FairOver: SAN GABRIEL RIV
0.2MI W/O I-605 FWY, Los Angeles, CA
Built 1953 Load: 33.7 t ADT: 42,693
IMPERIAL HWY
FairOver: SAN GABRIEL RIV / FR
0.5MI W/O I-605 FWY, Los Angeles, CA
Built 1952 Load: 33.7 t ADT: 36,741
FIGUEROA ST
FairOver: DOMINGUEZ CHAN
0.3MI N/O I-405 FWY, Los Angeles, CA
Built 1963 Load: 33.7 t ADT: 15,000
THE OLD RD
FairOver: SPTCO ABND
0.5MI N/O MAGIC MTN PKWY, Los Angeles, CA
Built 1928 Load: 33.7 t ADT: 30,894
DUARTE RD
FairOver: SAWPIT WASH
0.2MI W/O MOUNTAIN AVE, Los Angeles, CA
Built 1952 Load: 33.7 t ADT: 8,998
AVENUE 19
FairOver: DRY CREEK
0.4 MI E/O RD 24, Madera, CA
Built 1969 Load: 33.7 t ADT: 100
ROAD 39 1/2
FairOver: LITTLE DRY CREEK
0.45 MI S OF AVE 15, Madera, CA
Built 1968 Load: 33.7 t ADT: 100
RD 28 1/2
FairOver: MADERA CANAL
0.35 MI S AVE 24, Madera, CA
Built 1944 Load: 33.7 t ADT: 68
U.S. HIGHWAY 101
FairOver: STANDLEY CR RD (PRIVATE)
01-MEN-101-R102.46, Mendocino, CA
Built 1974 Load: 33.7 t ADT: 6,100
OLD RIVER ROAD
FairOver: CRAWFORD CREEK
13.3 MI N/W FROM US 101, Mendocino, CA
Built 1948 Load: 33.7 t ADT: 777
NORTH STATE ST
FairOver: FORSYTHE CREEK
1.0 MI N HWY 20 E, Mendocino, CA
Built 1949 Load: 33.7 t ADT: 20,200
STATE ROUTE 33
FairOver: ARROYO CANAL
10-MER-033-4.64, Merced, CA
Built 1918 Load: 33.7 t ADT: 5,200
BELLEVUE ROAD
FairOver: LIVINGSTON CANAL
0.36 MI E SHAFFER ROAD, Merced, CA
Built 1940 Load: 33.7 t ADT: 8,090
MOONEY FLAT ROAD
FairOver: DEER CREEK
1.5 MI NORTH OF ROUTE 20, Nevada, CA
Built 1956 Load: 33.7 t ADT: 606
INTERSTATE 40
FairOver: MANZANITA WASH
08-SBD-040-146.12, San Bernardino, CA
Built 1957 Load: 33.7 t ADT: 7,200
INTERSTATE 40
FairOver: HACIENDA WASH
08-SBD-040-R133.03, San Bernardino, CA
Built 1971 Load: 33.7 t ADT: 10,150
BASE LINE RD
FairOver: CUCAMONGA CREEK CHANNEL
0.3 MI W OF CARNELIAN, San Bernardino, CA
Built 1973 Load: 33.7 t ADT: 15,052
G ST
FairOver: LYTLE CREEK EAST BRANCH
0.1 MI S OF MILL ST, San Bernardino, CA
Built 1973 Load: 33.7 t ADT: 6,141
COUNTY RD
FairOver: SAN ANTONIO CHANNEL
0.2 MI W EAST END ST, San Bernardino, CA
Built 1958 Load: 33.7 t ADT: 4,140
GOODWIN DRIVE
FairOver: CALIFORNIA AQUEDUCT
0.6 MI E BALDY MESA RD, San Bernardino, CA
Built 1970 Load: 33.7 t ADT: 154
TECOLOTE CR OFF-RA
FairOver: TECOLOTE CREEK
11-SD-005-R20.88-SD, San Diego, CA
Built 1967 Load: 33.7 t ADT: 10,500
INTERSTATE 15 SB
FairOver: SO CENTRE CITY PARKWAY
11-SD-015-M27.76, San Diego, CA
Built 1977 Load: 33.7 t ADT: 110,000
INTERSTATE 15 NB
FairOver: RAINBOW GLEN ROAD
11-SD-015-R52.11, San Diego, CA
Built 1985 Load: 33.7 t ADT: 72,000
EIGHT MILE ROAD
FairOver: BISHOP CANAL
W OF RIO BLANCO RD, San Joaquin, CA
Built 1989 Load: 33.7 t ADT: 1,000
EL DORADO STREET
FairOver: FRENCH CAMP SLOUGH
0.3 MI N FRENCH CAMP RD, San Joaquin, CA
Built 1958 Load: 33.7 t ADT: 4,924
AURORA STREET
FairOver: MORMON SLOUGH
0.35 MI N CHARTER WAY, San Joaquin, CA
Built 1957 Load: 33.7 t ADT: 2,978
SANTA PAULA WAY
FairOver: MOSHER SLOUGH
JUST N MACDUFF AVE, San Joaquin, CA
Built 1972 Load: 33.7 t ADT: 1,800
MURPHY ROAD
FairOver: S BR S LITTLEJOHNS CREEK
0.2 MI S OF MARIPOSA RD, San Joaquin, CA
Built 1926 Load: 33.7 t ADT: 520
DAVIS ROAD
FairOver: BEAR CREEK
1.0 MI N OF THORNTON RD, San Joaquin, CA
Built 1963 Load: 33.7 t ADT: 10,200
PARKHILL RD
FairOver: POZO CREEK
0.15 MI N POZO RD, San Luis Obispo, CA
Built 1956 Load: 33.7 t ADT: 170
Showing 14,951-15,000 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.