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
CO. RD. M4296
FairOver: W BRANCH OF CAYUCOS CRK
1 MI NW CAYUCOS RD, San Luis Obispo, CA
Built 1960 Load: 20.7 t ADT: 100
QUITO RD
FairOver: SAN TOMAS CREEK
NORTH OF OLD ADOBE RD, Santa Clara, CA
Built 1915 Load: 20.7 t ADT: 6,740
PONDEROSA WAY
FairOver: SNOW CREEK
4.1 MI N OF S.R. 44, Shasta, CA
Built 1935 Load: 20.7 t ADT: 87
BYRNES RD
FairOver: ULATIS CREEK
0.5 MI N HAWKINS RD, Solano, CA
Built 1964 Load: 20.7 t ADT: 655
EAST AVENUE
FairOver: T.I.D. MAIN CANAL
1.1 MI W/O SANTA FE AVE, Stanislaus, CA
Built 1919 Load: 20.7 t ADT: 4,088
MONTPELIER ROAD
FairOver: T.I.D. MAIN CANAL
AT DALLAS RD, Stanislaus, CA
Built 1920 Load: 20.7 t ADT: 1,500
DUSTY LANE
FairOver: M.I.D. MAIN CANAL
0.6 MI W/O ALBERS RD, Stanislaus, CA
Built 1951 Load: 20.7 t ADT: 750
ORESTIMBA ROAD
FairOver: DELTA-MENDOTA CANAL
0.2 MI WEST OF BELL ROAD, Stanislaus, CA
Built 1949 Load: 20.7 t ADT: 675
STATE ROUTE 137
FairOver: INSIDE CREEK
06-TUL-137-22.70, Tulare, CA
Built 1921 Load: 20.7 t ADT: 21,000
AVE 224
FairOver: INSIDE CREEK
0.38 MI E OF RD 143, Tulare, CA
Built 1945 Load: 20.7 t ADT: 950
SANTA FE AVENUE
FairOver: T.I.D. UPPER LATERAL #3
0.7 MI NW OF ZEERING RD, Stanislaus, CA
Built 1924 Load: 20.8 t ADT: 4,713
BIG OAK FLAT ROAD
FairOver: TAMARACK CREEK
7.0 miles east from El Po, Mariposa, CA
Built 1939 Load: 20.9 t ADT: 2,530
RAMP/CONNECTOR 580
FairOver: FTHLL BLVD CONN
04-ALA-580-R35.00-SLN, Alameda, CA
Built 1964 Load: 21.1 t ADT: 7,075
SAN LEANDRO BLVD
FairOver: SAN LEANDRO CREEK
0.2 MI NORTH OF DAVIS ST, Alameda, CA
Built 1931 Load: 21.1 t ADT: 16,100
COHASSET RD
FairOver: SYCAMORE CREEK
0.2 MI N LASSEN AVE, Butte, CA
Built 1956 Load: 21.1 t ADT: 10,200
S EL DORADO AVE
FairOver: ARROYO PASAJERO
2.0 MI NORTH OF JAYNE AVE, Fresno, CA
Built 1970 Load: 21.1 t ADT: 800
COUNTRY CLUB RD
FairOver: TRINITY RIVER
IN WILLOW CREEK, Humboldt, CA
Built 1957 Load: 21.1 t ADT: 2,947
MATTOLE ROAD
FairOver: NORTH FORK MATTOLE RIVER
1.3 NW OF MATTOLE RIVER, Humboldt, CA
Built 1961 Load: 21.1 t ADT: 219
STATE ROUTE 115
FairOver: HOLTVILLE MAIN DRAIN
11-IMP-115-18.15, Imperial, CA
Built 1953 Load: 21.1 t ADT: 2,350
STATE ROUTE 119
FairOver: WEED CREEK
06-KER-119-4.41, Kern, CA
Built 1936 Load: 21.1 t ADT: 7,400
STATE ROUTE 41 NB
FairOver: NORTH FORK KINGS RIVER
06-KIN-041-R47.16, Kings, CA
Built 1932 Load: 21.1 t ADT: 8,800
U.S. HIGHWAY 101
FairOver: CORONADO STREET
07-LA-101-3.20-LA, Los Angeles, CA
Built 1949 Load: 21.1 t ADT: 175,000
U.S. HIGHWAY 101
FairOver: FULTON AVE
07-LA-101-14.38-LA, Los Angeles, CA
Built 1959 Load: 21.1 t ADT: 291,000
E FRK RD
FairOver: SAN GABRIEL RIV NF
0.1MI E/O SAN GBL CYN RD, Los Angeles, CA
Built 1949 Load: 21.1 t ADT: 1,960
OLD TPNG CN RD E/C
FairOver: OLD TOPANGA CRK
0.3MI W/O TOPANGA CYN BL, Los Angeles, CA
Built 1937 Load: 21.1 t ADT: 2,712
ROAD 26
FairOver: MADERA CANAL
0.25 MI S OF AVE 26, Madera, CA
Built 1948 Load: 21.1 t ADT: 285
MOUNT LASSEN DR SB
FairOver: MILLER CREEK
0.06 MI N LUCAS VALLEY RD, Marin, CA
Built 1925 Load: 21.1 t ADT: 980
STATE ROUTE 1
FairOver: ALDER CREEK
01-MEN-001-22.73, Mendocino, CA
Built 1947 Load: 21.1 t ADT: 1,800
SHERWOOD RD
FairOver: SAM WATT CREEK
2.7 MI S US 101, Mendocino, CA
Built 1960 Load: 21.1 t ADT: 103
ALMOND ROAD
FairOver: CCID MAIN CANAL
1.03 MI E OF SR 165, Merced, CA
Built 1966 Load: 21.1 t ADT: 105
GAMBLE ROAD
FairOver: ESCALADIAN CANAL
AT YOUD RD, Merced, CA
Built 1930 Load: 21.1 t ADT: 95
RANCHERS ROAD
FairOver: LE GRAND CANAL
NORTH OF ANSEL ADAMS ROAD, Merced, CA
Built 1967 Load: 21.1 t ADT: 10
BORONDA RD
FairOver: CARMEL RIVER
0.5 MI S CARMEL VALLEY RD, Monterey, CA
Built 1946 Load: 21.1 t ADT: 1,100
FAIRVIEW AVENUE
FairOver: BAUTISTA CREEK
0.9 MI. S/O RTE. 74 HWY., Riverside, CA
Built 1960 Load: 21.1 t ADT: 1,000
32ND AVENUE
FairOver: PALO VERDE LAGOON
2 MI. W/O "C" BOULEVARD, Riverside, CA
Built 1974 Load: 21.1 t ADT: 500
ORANGE RD
FairOver: BAT CREEK
0.2 MI E/O DILLARD, Sacramento, CA
Built 1935 Load: 21.1 t ADT: 300
INTERSTATE 40
FairOver: BEAL WASH
08-SBD-040-149.85, San Bernardino, CA
Built 1967 Load: 21.1 t ADT: 7,450
BALDY MESA ROAD
FairOver: CALIFORNIA AQUEDUCT
2.4 MI N OF PHELAN RD, San Bernardino, CA
Built 1971 Load: 21.1 t ADT: 7,078
ORANGE ST
FairOver: PLUNGE CREEK OVERFLOW
1.5 MI N OF PIONEER AVE, San Bernardino, CA
Built 1916 Load: 21.1 t ADT: 10,900
VAN ALLEN ROAD
FairOver: TEMPLE CREEK N BRANCH
0.3 MI S OF GAWNE RD, San Joaquin, CA
Built 1927 Load: 21.1 t ADT: 641
STATE ROUTE 1 NB
FairOver: SAN LORENZO RIVER
05-SCR-001-17.41-SCR, Santa Cruz, CA
Built 1956 Load: 21.1 t ADT: 30,000
ROCK CREEK RD
FairOver: BAILEY CREEK
0.7 MI S OF SR 44, Shasta, CA
Built 1930 Load: 21.1 t ADT: 42
COPCO RD
FairOver: DRY CREEK
3.4 MI E OF AGER RD, Siskiyou, CA
Built 1960 Load: 21.1 t ADT: 226
US HIGHWAY 101 NB
FairOver: NWP RR/NCRRA
04-SON-101-33.22, Sonoma, CA
Built 1962 Load: 21.1 t ADT: 22,750
BOHEMIAN HWY
FairOver: RUSSIAN RIVER
AT MONTE RIO, Sonoma, CA
Built 1934 Load: 21.1 t ADT: 3,100
OLD REDWOOD HWY
FairOver: PRUITT CREEK
1.75 MI S PLEASANT RD, Sonoma, CA
Built 1913 Load: 21.1 t ADT: 9,000
OLD LA GRANGE ROAD
FairOver: GASBURG CREEK
0.3 MI E NEW LAGRANGE RD, Stanislaus, CA
Built 1916 Load: 21.1 t ADT: 1,724
ROGERS ROAD
FairOver: DELTA-MENDOTA CANAL
0.5 MILE N OF SPERRY AVE, Stanislaus, CA
Built 1949 Load: 21.1 t ADT: 6,580
STATE ROUTE 99 SB
FairOver: FEATHER RIVER
03-SUT-099-12.03, Sutter, CA
Built 1958 Load: 21.1 t ADT: 16,100
GUY COVINGTON DR
FairOver: E FORK OF STUARTS FORK
0.7 MI SE OF STATE RTE 3, Trinity, CA
Built 1970 Load: 21.1 t ADT: 170
Showing 9,451-9,500 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.