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
US HIGHWAY 101 NB
PoorOver: REFUGIO ROAD
05-SB-101-R36.62, Santa Barbara, CA
Built 1974 Load: 55.1 t ADT: 16,000
BOYD ROAD
PoorOver: EAST HIGHLINE CANAL
1.1 MI E/O HIGHLINE RD, Imperial, CA
Built 1975 Load: 56.7 t ADT: 50
ATLANTIC BLVD
PoorOver: UPRR
50FT S/O MISSION RD, Los Angeles, CA
Built 1979 Load: 56.7 t ADT: 35,177
SKYWAY
PoorOver: MAGALIA RESERVOIR SPILWY
AT MAGALIA, Butte, CA
Built 1975 Load: 57.0 t ADT: 13,516
STATE ROUTE 162
PoorOver: OUTLET CREEK
01-MEN-162-0.70, Mendocino, CA
Built 1958 Load: 57.0 t ADT: 860
MALIBU DR
PoorOver: FRANKLIN CREEK
BTWN STERLING & TOMOL DR, Santa Barbara, CA
Built 1976 Load: 58.0 t ADT: 2,443
SANTA FE GRADE
PoorOver: SPILLWAY DITCH
3.4 MI N/W OF SR 165, Merced, CA
Built 1977 Load: 58.3 t ADT: 200
INTERSTATE 40
PoorOver: HACIENDA WASH
08-SBD-040-R133.03, San Bernardino, CA
Built 1971 Load: 58.6 t ADT: 10,150
USONA ROAD
PoorOver: MIDDLE FK CHOWCHILLA RIV
2.2 MI SOUTH OF SR 49, Mariposa, CA
Built 1970 Load: 59.3 t ADT: 190
U.S. HIGHWAY 101
PoorOver: LONG VALLEY CREEK
01-MEN-101-64.71, Mendocino, CA
Built 1960 Load: 59.3 t ADT: 6,750
AVE S W
PoorOver: RR
2MI E/O SIERRA HWY, Los Angeles, CA
Built 2007 Load: 59.6 t ADT: 28,154
E SIDE POTTER VLY
PoorOver: EAST FORK RUSSIAN RIVER
2.2 MI N RTE 20, Mendocino, CA
Built 1973 Load: 59.9 t ADT: 2,352
ENCINA AVE
PoorOver: YERBA BUENA CREEK
0.5 MI SE/O I ST, San Luis Obispo, CA
Built 1984 Load: 60.6 t ADT: 1,365
INTERSTATE 40
PoorOver: TANK TOWER DITCH
08-SBD-040-R119.50, San Bernardino, CA
Built 1971 Load: 60.9 t ADT: 7,450
INTERSTATE 40
PoorOver: TANK TOWER DITCH
08-SBD-040-R119.51, San Bernardino, CA
Built 1971 Load: 60.9 t ADT: 7,450
INTERSTATE 210
PoorOver: BIG TUJUNGA WASH
07-LA-210-R9.89-LA, Los Angeles, CA
Built 1980 Load: 61.2 t ADT: 113,000
SPRUCE AVE
PoorOver: COLMA CREEK
NORTH OF SOUTH ART CANAL, San Mateo, CA
Built 1975 Load: 61.6 t ADT: 17,332
INTERSTATE 40
PoorOver: ARDIS DITCH
08-SBD-040-R118.66, San Bernardino, CA
Built 1971 Load: 63.2 t ADT: 7,500
GRAND AVE
PoorOver: ROSE CANYON CREEK
0.4 MI W/O MISSION BAY DR, San Diego, CA
Built 1956 Load: 63.2 t ADT: 39,700
FREMONT AVE
PoorOver: UPRR
50FT S/O MISSION RD, Los Angeles, CA
Built 1979 Load: 63.5 t ADT: 51,262
BALD HILLS ROAD
PoorOver: PRAIRIE CREEK
0.01 MI E/O SR 101, Humboldt, CA
Built 1957 Load: 63.8 t ADT: 479
MARENGO AVE
PoorOver: UPRR
50FT S/O MISSION RD, Los Angeles, CA
Built 1979 Load: 67.1 t ADT: 14,009
PRESCOTT DRIVE
PoorOver: JOHNSON GULCH
2.2 MI EAST OF MATTOLE RD, Humboldt, CA
Built 1973 Load: 67.7 t ADT: 9
ALEXANDER AVE
PoorOver: BUNKER ROAD
0.3 KM EAST OF RTE 101, Marin, CA
Built 1938 Load: 67.7 t ADT: 7,201
STATE PARK RD
PoorOver: LITTLE BUTANO CREEK
BUTANO STATE PARK, San Mateo, CA
Built 1983 Load: 68.0 t ADT: 25
TELEPHONE RD
PoorOver: UP RR & AMTRAK
0.8 MI S OF MAIN ST, Ventura, CA
Built 1981 Load: 68.0 t ADT: 13,495
MONROE STREET
PoorOver: WHITEWATER RIVER
0.1 MI. S/O RTE. I-10 FWY, Riverside, CA
Built 1972 Load: 69.3 t ADT: 22,400
TARTAN TRAIL RD
PoorOver: SAN MATEO CREEK
WEST CRYSTAL SPRINGS RD, San Mateo, CA
Built 1964 Load: 70.0 t ADT: 1,887
WASHINGTON RD
PoorOver: SOUTH YUBA RIVER
IN WASHINGTON, Nevada, CA
Built 1971 Load: 77.8 t ADT: 263
PORTER STREET
PoorOver: SOQUEL CREEK
0.1 MI N OF SR 1, Santa Cruz, CA
Built 1994 Load: 83.3 t ADT: 11,200
INTERSTATE 680 SB
PoorOver: DEPT OF WATER RESOURCES
04-ALA-680-M0.79-FMT, Alameda, CA
Built 1971 Load: 86.1 t ADT: 60,500
CASTA DEL SOL
PoorOver: OSO CREEK
.2 MI E/O MARGUERITE PKWY, Orange, CA
Built 1973 Load: 99.9 t ADT: 3,062
JERONIMO ROAD
PoorOver: OSO CREEK
.30 MI E MARGUERITE PKWY, Orange, CA
Built 1973 Load: 99.9 t ADT: 15,313
PITT STREET
Structurally DeficientOver: JACKSON CREEK
NW STATE ROUTE 88, Amador, CA
Built 1925 ADT: 800
BIG TREES PARKWAY
Structurally DeficientOver: N FORK STANISLAUS RIVER
CALAV BIG TREES ST PK, Calaveras, CA
Built 1959 ADT: 400
LEESVILLE-LODGA RD
Structurally DeficientOver: LITTLE INDIAN CREEK
6.1 MI N LEESVILLE ROAD, Colusa, CA
Built 1915 ADT: 37
CONSUMNES MINE RD
Structurally DeficientOver: NORTH FK COSUMNES RIVER
4.0 MI N/O GRIZZILY FT RD, El Dorado, CA
Built 1958 ADT: 950
N CHATEAU FRESNO
Structurally DeficientOver: HOUGHTON CANAL
0.5 MI SOUTH OF BELMONT, Fresno, CA
Built 1925 ADT: 500
WINDING ROAD
Structurally DeficientOver: BALSAM CREEK
8S08-0.4, Fresno, CA
Built 1959 ADT: 50
COUNTY RD R
Structurally DeficientOver: GLENN-COLUSA CANAL
0.3 MI N/O COUNTY RD 39, Glenn, CA
Built 1950 ADT: 85
COUNTY ROAD Z
Structurally DeficientOver: ANGEL SLOUGH
0.3 MI N OF S.H. 162, Glenn, CA
Built 1925 ADT: 586
STATE ROUTE 211
Structurally DeficientOver: EEL RIVER
01-HUM-211-78.10, Humboldt, CA
Built 1911 ADT: 5,300
HOUSTON AVE
Structurally DeficientOver: CROSS CREEK
0.1 MI W OF 6TH AVE, Kings, CA
Built 1968 ADT: 3,190
ROAD M1
Structurally DeficientOver: EEL RIVER
13 MILES NE POTTER VALLEY, Lake, CA
Built 1971 ADT: 350
CR 111 (PITTVILLE)
Structurally DeficientOver: BEAVER CREEK
1.0 MI S OF CR 404, Lassen, CA
Built 1975 ADT: 100
AVENUE 18.5
Structurally DeficientOver: EASTSIDE BYPASS CHANNEL
2.0 MI EAST OF ROAD 4, Madera, CA
Built 1965 ADT: 300
WINDING ROAD
Structurally DeficientOver: BEASORE CREEK
NO DATA ENTERED, Madera, CA
Built 1970 ADT: 50
WINDING ROAD
Structurally DeficientOver: JOHNSON CREEK
06S61-1.5, Madera, CA
Built 1973 ADT: 50
WINDING ROAD
Structurally DeficientOver: MIDDLE MIAMI CREEK
NO DATA ENTERED, Mariposa, CA
Built 1965 ADT: 50
LOW GAP ROAD
Structurally DeficientOver: MASONITE INDUSTRIAL ROAD
6.7 MI S ORR SPRINGS ROAD, Mendocino, CA
Built 1960 ADT: 25
Showing 26,901-26,950 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 |