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
INDUSTRIAL DRIVE
FairOver: NORTH LITTLE JOHNS CREEK
JUST E OF POCK LANE, San Joaquin, CA
Built 1996 Load: 32.4 t ADT: 200
WHISTLER WAY
FairOver: PIXLEY SLOUGH
EAST OF THORNTON ROAD, San Joaquin, CA
Built 1991 Load: 32.4 t ADT: 1,597
LATHROP RD
FairOver: UP RR & SSJID CANAL
0.5 MI W AIRPORT WY, San Joaquin, CA
Built 2005 Load: 32.4 t ADT: 14,498
LOWERSACRAMENTO RD
FairOver: WOODBRIDGE ID MAIN CANAL
0.5 MI S OF WOODBRIDGE RD, San Joaquin, CA
Built 2005 Load: 32.4 t ADT: 9,116
KELLEY ROAD
FairOver: MOSHER SLOUGH
EAST OF I-5 PM 33.5, San Joaquin, CA
Built 1980 Load: 32.4 t ADT: 9,100
PRODUCERS DRIVE
FairOver: NORTH LITTLE JOHNS CREEK
NEAR INDUSTRIAL DRIVE, San Joaquin, CA
Built 1982 Load: 32.4 t ADT: 5,000
DAVIS ROAD
FairOver: PIXLEY SLOUGH
SOUTH OF WEST 8 MILE ROAD, San Joaquin, CA
Built 2011 Load: 32.4 t ADT: 8,200
MCBRIDE ROAD
FairOver: SSJD CANAL
AT RIVER ROAD, San Joaquin, CA
Built 2008 Load: 32.4 t ADT: 361
MARIPOSA ROAD
FairOver: DUCK CREEK
0.25 MI S/E OF SR 99, San Joaquin, CA
Built 2016 Load: 32.4 t ADT: 4,642
ARCH AIRPORT ROAD
FairOver: FRENCH CAMP SLOUGH
0.34 MI EAST OF ROUTE 5, San Joaquin, CA
Built 2013 Load: 32.4 t ADT: 20,818
ARCH AIRPORT ROAD
FairOver: UP RAILROAD TRACKS
0.97 MI EAST OF ROUTE 5, San Joaquin, CA
Built 2013 Load: 32.4 t ADT: 20,818
US HIGHWAY 101 SB
FairOver: PASO ROBLES CREEK
05-SLO-101-49.64, San Luis Obispo, CA
Built 1951 Load: 32.4 t ADT: 31,000
STATE ROUTE 58
FairOver: YERBA BUENA CREEK
05-SLO-058-1.62, San Luis Obispo, CA
Built 1954 Load: 32.4 t ADT: 7,200
STATE ROUTE 46 WB
FairOver: HUER HUERO CREEK
05-SLO-046-31.97, San Luis Obispo, CA
Built 1992 Load: 32.4 t ADT: 8,050
STATE ROUTE 46 EB
FairOver: HUER HUERO CREEK
05-SLO-046-31.97, San Luis Obispo, CA
Built 1992 Load: 32.4 t ADT: 8,050
STATE ROUTE 46
FairOver: SALINAS RIVER, RIVER RD
05-SLO-046-29.80-PSRS, San Luis Obispo, CA
Built 1992 Load: 32.4 t ADT: 27,100
STATE ROUTE 1
FairOver: SAN SIMEON CREEK
05-SLO-001-52.92, San Luis Obispo, CA
Built 1984 Load: 32.4 t ADT: 5,300
US HIGHWAY 101 SB
FairOver: UP RR & AMTRAK
05-SLO-101-35.60, San Luis Obispo, CA
Built 1991 Load: 32.4 t ADT: 30,000
US HIGHWAY 101 NB
FairOver: UP RR & AMTRAK
05-SLO-101-35.60, San Luis Obispo, CA
Built 1991 Load: 32.4 t ADT: 30,000
S101-LOS OSOS OFFR
FairOver: PERFUMA CREEK
05-SLO-101-25.94, San Luis Obispo, CA
Built 1962 Load: 32.4 t ADT: 6,508
STATE ROUTE 46
FairOver: DRY CREEK
05-SLO-046-34.14, San Luis Obispo, CA
Built 1954 Load: 32.4 t ADT: 16,100
STATE ROUTE 58
FairOver: FERNANDEZ CREEK
05-SLO-058-21.00, San Luis Obispo, CA
Built 1984 Load: 32.4 t ADT: 925
STATE ROUTE 58
FairOver: CAMMATTI CREEK
05-SLO-058-24.54, San Luis Obispo, CA
Built 1984 Load: 32.4 t ADT: 825
STATE ROUTE 58
FairOver: EAST FORK HUER HUERO CRK
05-SLO-058-11.78, San Luis Obispo, CA
Built 1951 Load: 32.4 t ADT: 825
STATE ROUTE 41
FairOver: W BRANCH HUER HUERO CRK
05-SLO-041-27.74, San Luis Obispo, CA
Built 1975 Load: 32.4 t ADT: 1,400
STATE ROUTE 41
FairOver: SHEDD CANYON
05-SLO-041-35.82, San Luis Obispo, CA
Built 1979 Load: 32.4 t ADT: 750
STATE ROUTE 166
FairOver: RED ROCK CANYON CREEK
05-SLO-166-46.84, San Luis Obispo, CA
Built 1993 Load: 32.4 t ADT: 2,900
STATE ROUTE 1
FairOver: PICO CREEK
05-SLO-001-54.80, San Luis Obispo, CA
Built 1997 Load: 32.4 t ADT: 5,300
US HIGHWAY 101 NB
FairOver: WILLOW ROAD
05-SLO-101-6.45, San Luis Obispo, CA
Built 2012 Load: 32.4 t ADT: 27,000
STATE ROUTE 46
FairOver: MCMILLAN CANYON CREEK
05-SLO-046-45.50, San Luis Obispo, CA
Built 2016 Load: 32.4 t ADT: 15,100
OLD STATE ROUTE 46
FairOver: ESTRELLA RIVER
05-SLO-046-39.97, San Luis Obispo, CA
Built 2013 Load: 32.4 t ADT: 100
STATE ROUTE 41
FairOver: ESTRELLA RIVER
05-SLO-041-R41.70, San Luis Obispo, CA
Built 1996 Load: 32.4 t ADT: 2,086
STATE ROUTE 41
FairOver: MCMILLAN CANYON CREEK
05-SLO-041-R41.96, San Luis Obispo, CA
Built 1996 Load: 32.4 t ADT: 2,086
ELKS LANE
FairOver: SAN LUIS OBISPO CREEK
SAN LUIS OBISPO CREEK, San Luis Obispo, CA
Built 1996 Load: 32.4 t ADT: 1,043
HI MOUNTAIN RD
FairOver: SAUCELITO CREEK
2.5 MI E LOPEZ CANYON RD, San Luis Obispo, CA
Built 1966 Load: 32.4 t ADT: 487
22ND STREET
FairOver: ARROYO GRANDE CREEK
0.2 MI SOUTH OF SR-1, San Luis Obispo, CA
Built 1985 Load: 32.4 t ADT: 663
SYCAMORE RD
FairOver: ATASCADERO CREEK
0.05 MI N OF S.R. 41, San Luis Obispo, CA
Built 1990 Load: 32.4 t ADT: 1,750
SAN ANDRES AVE
FairOver: ATASCADERO CREEK
0.25 MI W S.R. 41, San Luis Obispo, CA
Built 1993 Load: 32.4 t ADT: 2,275
FOOTHILL ROAD
FairOver: LAGUNA CREEK
0.3 MI N LOS OSOS VALY RD, San Luis Obispo, CA
Built 1959 Load: 32.4 t ADT: 8,654
PREFUMO CANYON RD
FairOver: PREFUMO CANYON CREEK
1.8 MI SW LOS OSOS VLY RD, San Luis Obispo, CA
Built 1969 Load: 32.4 t ADT: 300
RIVER RD
FairOver: TORO CREEK
2.4 MI N OF POSO RD, San Luis Obispo, CA
Built 1986 Load: 32.4 t ADT: 100
MONTEREY RD
FairOver: GRAVES CREEK
AT GRAVES CREEK RD, San Luis Obispo, CA
Built 1993 Load: 32.4 t ADT: 1,669
TORO ST
FairOver: SAN LUIS OBISPO CREEK
0.1 MI SE MARSH ST, San Luis Obispo, CA
Built 1989 Load: 32.4 t ADT: 1,669
UNION RD
FairOver: HUER HUERO CREEK
1.5 MI S OF SR 46, San Luis Obispo, CA
Built 1994 Load: 32.4 t ADT: 5,032
POZO ROAD
FairOver: DRY CREEK
0.3 MI W RIVER RD, San Luis Obispo, CA
Built 1941 Load: 32.4 t ADT: 787
POZO RD
FairOver: SALINAS RIVER
RIVER ROAD, San Luis Obispo, CA
Built 1989 Load: 32.4 t ADT: 787
13TH ST
FairOver: SALINAS RIVER
IN PASO ROBLES, San Luis Obispo, CA
Built 1966 Load: 32.4 t ADT: 15,000
ASH ST
FairOver: LITTLE CAYUCOS CREEK
D ST & E ST IN CAYUCOS, San Luis Obispo, CA
Built 1990 Load: 32.4 t ADT: 638
PRICE CANYON ROAD
FairOver: UP RR & AMTRAK
0.35 MI SW/O SR 227, San Luis Obispo, CA
Built 1963 Load: 32.4 t ADT: 6,003
VIEJO CAMINO
FairOver: PALOMA CREEK
0.2 MI SE EL CAMINO REAL, San Luis Obispo, CA
Built 1976 Load: 32.4 t ADT: 500
Showing 14,001-14,050 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.