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
SOUTHPORT PARKWAY
GoodOver: BRIDGEWAY LAKE
0.5 MI S OF MARSHALL RD, Yolo, CA
Built 2005 Load: 32.4 t ADT: 1,248
COUNTY ROAD 95
GoodOver: DRY SLOUGH
JUST N OF COUNTY ROAD 31, Yolo, CA
Built 2020 Load: 32.4 t ADT: 641
LA RUE ROAD
GoodOver: PUTAH CREEK
30 FT N ARBORETUM DR, Yolo, CA
Built 2020 Load: 32.4 t ADT: 5,810
STATE ROUTE 70
GoodOver: CLARK DIVERSION CANAL
03-YUB-070-R6.04, Yuba, CA
Built 1967 Load: 32.4 t ADT: 17,200
STATE ROUTE 65
GoodOver: KIMBALL CREEK
03-YUB-065-R6.32, Yuba, CA
Built 1971 Load: 32.4 t ADT: 14,000
STATE ROUTE 20
GoodOver: DRY CREEK
03-YUB-020-13.90, Yuba, CA
Built 2022 Load: 32.4 t ADT: 7,800
STATE ROUTE 20
GoodOver: TIMBUCTOO CREEK
03-YUB-020-R18.50, Yuba, CA
Built 2021 Load: 32.4 t ADT: 7,100
STATE ROUTE 70
GoodOver: SIMMERLY SLOUGH
03-YUB-070-16.01, Yuba, CA
Built 2022 Load: 32.4 t ADT: 9,700
JASPER LANE
GoodOver: DRY CREEK
0.8 MI N/O SPENCEVILLE RD, Yuba, CA
Built 1998 Load: 32.4 t ADT: 570
PLUMAS ARBOGA RD
GoodOver: PLUMAS-ARBOGA CANAL
1/4 MI E OF SR 70, Yuba, CA
Built 1990 Load: 32.4 t ADT: 1,700
COUNTY ROAD 10
GoodOver: TENNESSEE CREEK
11.4 MI N OF S.R. 20, Yuba, CA
Built 1997 Load: 32.4 t ADT: 1,260
VIRGINIA RD
GoodOver: HUTCHINSON CREEK
1.1 MI S OF ERLE RD, Yuba, CA
Built 1995 Load: 32.4 t ADT: 570
SMITH RD
GoodOver: PRAIRIE CREEK
0.9 MI S LOMA RICA RD, Yuba, CA
Built 1980 Load: 32.4 t ADT: 220
FORTY MILE RD
GoodOver: KIMBALL CREEK
0.8 MI S OF S.R. 65, Yuba, CA
Built 2000 Load: 32.4 t ADT: 2,200
HONCUT RD
GoodOver: SOUTH HONCUT CREEK
0.6 MI N FRUITLAND RD, Yuba, CA
Built 2011 Load: 32.4 t ADT: 340
LA PORTE RD
GoodOver: NEW YORK CREEK
0.3 MI N OF NEW YORK FLAT, Yuba, CA
Built 2013 Load: 32.4 t ADT: 1,400
TIMBUCTOO LANE
GoodOver: DEEP RAVINE NO. 1
1.2 MI NE OF ROUTE 20, Yuba, CA
Built 2014 Load: 32.4 t ADT: 70
NEW YORK HOUSE RD
GoodOver: DRY CREEK
0.2 MI N/E FRENCHTOWN RD, Yuba, CA
Built 2018 Load: 32.4 t ADT: 430
IOWA CITY ROAD
GoodOver: JACK SLOUGH
0.3 MI E OF FRUITLAND RD, Yuba, CA
Built 2023 Load: 32.4 t ADT: 500
RICES CROSSING RD
GoodOver: OREGON HOUSE CREEK
0.04 MI S/E MARYSVILLE RD, Yuba, CA
Built 2020 Load: 32.4 t ADT: 2,030
STATE ROUTE 24 WB
GoodOver: WALNUT CREEK UC (BARTD)
04-CC-024-R8.31, Contra Costa, CA
Built 1970 Load: 32.6 t ADT: 79,500
INTERSTATE 405
GoodOver: 223RD STREET OH
07-LA-405-8.19-LBCH, Los Angeles, CA
Built 1961 Load: 32.6 t ADT: 237,800
S405-IMPERIAL HWY
GoodOver: LENNOX BLVD
07-LA-405-21.74-LA, Los Angeles, CA
Built 1989 Load: 32.6 t ADT: 40,000
IMPERIAL HWY-N405
GoodOver: LENNOX BLVD
07-LA-405-21.74-LA, Los Angeles, CA
Built 1989 Load: 32.6 t ADT: 62,400
U.S. HIGHWAY 101
GoodOver: ENCINO EQUESTRIAN UC
07-LA-101-18.51-LA, Los Angeles, CA
Built 1958 Load: 32.6 t ADT: 296,000
INTERSTATE 405
GoodOver: LASSEN STREET
07-LA-405-45.74-LA, Los Angeles, CA
Built 1963 Load: 32.6 t ADT: 216,000
GRAND AVE
GoodOver: TRANSIT TUNNEL
BETW. 3RD ST & 4TH ST, Los Angeles, CA
Built 1982 Load: 32.6 t ADT: 8,212
B STREET
GoodOver: SAN DIEGO CREEK
0.1 MI. W/O PACIFICA, Orange, CA
Built 1993 Load: 32.6 t ADT: 10
BASILONE ROAD
GoodOver: SAN ONOFRE CREEK
600' SE OF SAN JUAN RD, San Diego, CA
Built 1960 Load: 32.6 t ADT: 4,775
MOTOR TRANSPORT CO
GoodOver: S. FORK SAN ONOFRE CREEK
260' SW OF BASILONE ROAD, San Diego, CA
Built 1960 Load: 32.6 t ADT: 50
BASILONE ROAD
GoodOver: LAS PULGAS CREEK
0.1 MILE E OF LAS PULGAS, San Diego, CA
Built 1960 Load: 32.6 t ADT: 8,150
VADO DEL RIO ROAD
GoodOver: UNNAMED CREEK
0.1 MILE E OF BASILONE RD, San Diego, CA
Built 1960 Load: 32.6 t ADT: 1,507
SAN MATEO GATE BYP
GoodOver: CHRISTIANITOS CREEK
AT SAN MATEO GATE, San Diego, CA
Built 2000 Load: 32.6 t ADT: 5
WIRE MOUNTIAN ROAD
GoodOver: VANDEGRIFT BLVD
500' NORTH OF MAIN GATE, San Diego, CA
Built 2014 Load: 32.6 t ADT: 500
FULTON ROAD
GoodOver: SANTA ROSA CREEK
1/4 MI S COLLEGE AVE, Sonoma, CA
Built 1960 Load: 32.6 t ADT: 19,000
STATE ROUTE 120
GoodOver: HILLSIDE
10-TUO-120-R44.84, Tuolumne, CA
Built 1970 Load: 32.6 t ADT: 3,650
E580-WEBSTER&BROAD
GoodOver: TELEGRAPH AVENUE
04-ALA-580-45.03-OAK, Alameda, CA
Built 1961 Load: 32.7 t ADT: 5,500
PARKING LOT RD
GoodOver: DRAINAGE TO CHABOT CANAL
W OF HUTCHINS AVE, Alameda, CA
Built 2017 Load: 32.7 t ADT: 200
COHASSET RD
GoodOver: MUD CREEK
0.1 MI S RCHARDSN SPRG RD, Butte, CA
Built 1962 Load: 32.7 t ADT: 2,148
STATE ROUTE 49
GoodOver: MURRAY CREEK
10-CAL-049-R20.69, Calaveras, CA
Built 1963 Load: 32.7 t ADT: 5,900
COUNTY ROAD 305
GoodOver: NORTH FORK SMITH RIVER
12 MI E JCT ROWDY CREK RD, Del Norte, CA
Built 1981 Load: 32.7 t ADT: 10
MORMON EMIGRANT TR
GoodOver: JENKINSON LAKE SPILLWAY
0.9 MI E SLY PARK RD, El Dorado, CA
Built 1954 Load: 32.7 t ADT: 962
NO DATA ENTERED
GoodOver: TALLAC CREEK
NO DATA ENTERED, El Dorado, CA
Built 2009 Load: 32.7 t ADT: 50
West Gale Ave
GoodOver: San Luis Canal
2 mi E of Lassen Av, Fresno, CA
Built 1968 Load: 32.7 t ADT: 700
STATE ROUTE 180
GoodOver: KINGS SLOUGH
06-FRE-180-26.95, Fresno, CA
Built 1952 Load: 32.7 t ADT: 5,650
INTERSTATE 5 SB
GoodOver: CANTUA CREEK
06-FRE-005-28.50, Fresno, CA
Built 1968 Load: 32.7 t ADT: 16,500
INTERSTATE 5 NB
GoodOver: CANTUA CREEK
06-FRE-005-28.50, Fresno, CA
Built 1968 Load: 32.7 t ADT: 16,500
STATE ROUTE 299
GoodOver: MILL CREEK
01-HUM-299-R4.21, Humboldt, CA
Built 1965 Load: 32.7 t ADT: 9,700
U.S. HIGHWAY 101
GoodOver: SORENSON ROAD
01-HUM-101-R39.67, Humboldt, CA
Built 1967 Load: 32.7 t ADT: 6,190
STATE ROUTE 96
GoodOver: BLUFF CREEK
01-HUM-096-R28.91, Humboldt, CA
Built 1967 Load: 32.7 t ADT: 540
Showing 23,651-23,700 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 |