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
VALYERMO RD
FairOver: CALIFORNIA AQUEDUCT
2.5MI S/O SR-138 HWY, Los Angeles, CA
Built 1969 Load: 41.8 t ADT: 1,020
GRAND AVE
FairOver: SAN JOSE CRK
0.3MI S/O VALLEY BLVD, Los Angeles, CA
Built 1991 Load: 41.8 t ADT: 19,798
ENGLE DRIVEWAY
FairOver: ACTA
0.2MI N/O FIRESTONE BLVD, Los Angeles, CA
Built 2000 Load: 41.8 t ADT: 306
ALONDRA BLVD
FairOver: ACTA
25FT E/O ALAMEDA ST, Los Angeles, CA
Built 1999 Load: 41.8 t ADT: 17,956
DEL AMO
FairOver: RAILROAD
0.4 ML E/O PRAIRIE AVE, Los Angeles, CA
Built 2013 Load: 41.8 t ADT: 10,000
HARE CANYON ROAD
FairOver: BIG SANDY CREEK
AT INDIAN VALLEY RD, Monterey, CA
Built 1964 Load: 41.8 t ADT: 60
SAN TIMOTEO CYN RD
FairOver: SAN TIMOTEO CREEK
0.1 MI S BROOKSIDE RD, San Bernardino, CA
Built 1970 Load: 41.8 t ADT: 12,000
INTERSTATE 805 SB
FairOver: OTAY RIVER
11-SD-805-3.34-SD, San Diego, CA
Built 1975 Load: 41.8 t ADT: 101,000
INTERSTATE 805 NB
FairOver: OTAY RIVER
11-SD-805-3.34-SD, San Diego, CA
Built 1975 Load: 41.8 t ADT: 101,000
SPACE THEATER WAY
FairOver: PEPPER CANYON
450 FT W/O PARK BLVD, San Diego, CA
Built 1972 Load: 41.8 t ADT: 1,200
BAILEY AVE
FairOver: FISHER CREEK
0.35 MI SW SNTA TERESA B, Santa Clara, CA
Built 1947 Load: 41.8 t ADT: 5,536
LOCUST RD
FairOver: A.C.I.D. CANAL
30' SOUTH OF KIMBERLY RD, Shasta, CA
Built 1963 Load: 41.8 t ADT: 1,802
STATE ROUTE 12
FairOver: UNION CREEK
04-SOL-012-8.54, Solano, CA
Built 1957 Load: 41.8 t ADT: 12,200
BAILHACHE ROAD
FairOver: HILLSIDE
2 MI NE OF HEALDSBURG AVE, Sonoma, CA
Built 1985 Load: 41.8 t ADT: 700
PACIFIC AVENUE
FairOver: HILLSIDE
IN JENNER, Sonoma, CA
Built 2015 Load: 41.8 t ADT: 100
EAST FORK ROAD
FairOver: POTATO CREEK
2.2 MI E WILDWOOD ROAD, Trinity, CA
Built 1950 Load: 41.8 t ADT: 50
DANLEY ROAD
FairOver: LURLINE CREEK
AT LURLINE RD, Colusa, CA
Built 1974 Load: 42.1 t ADT: 152
U.S. HIGHWAY 101
FairOver: STRONGS CREEK
01-HUM-101-59.94, Humboldt, CA
Built 1962 Load: 42.1 t ADT: 13,000
S QUARRY ROAD
FairOver: JACOBY CREEK
0.05 MI S JACOBY CREEK RD, Humboldt, CA
Built 1971 Load: 42.1 t ADT: 115
STATE ROUTE 29
FairOver: ADOBE CREEK
01-LAK-029-R37.57, Lake, CA
Built 1966 Load: 42.1 t ADT: 12,100
BARTLETT SPRNGS RD
FairOver: COMPLEXION CREEK
28 MI E OF SR 20, Lake, CA
Built 1960 Load: 42.1 t ADT: 103
VICTORY BLVD
FairOver: LOS ANGELES RIVER
0.2 M W/O LINDLEY AVE.,, Los Angeles, CA
Built 1963 Load: 42.1 t ADT: 56,000
LOMA ALTA DR
FairOver: RUBIO WASH
0.8MI N/O ALTADENA DR, Los Angeles, CA
Built 2001 Load: 42.1 t ADT: 905
AVENUE 18
FairOver: BERENDA SLOUGH
AT INT RD 12, Madera, CA
Built 1973 Load: 42.1 t ADT: 300
NORTH BUSH STREET
FairOver: ORRS CREEK
0.2 MI S OF LOW GAP RD, Mendocino, CA
Built 1972 Load: 42.1 t ADT: 4,692
PIONEER ROAD
FairOver: CCID MAIN CANAL
0.25 MI WEST OF SR 165, Merced, CA
Built 1973 Load: 42.1 t ADT: 4,206
DAVIS RD
FairOver: DAVIS ROAD OH
JUST N SH 183, Monterey, CA
Built 1983 Load: 42.1 t ADT: 36,700
STATE ROUTE 111
FairOver: DATE DITCH
08-RIV-111-7.97, Riverside, CA
Built 1951 Load: 42.1 t ADT: 3,300
INTERSTATE 15 NB
FairOver: METROLINK & BNSF RY
08-SBD-015-4.10-RCUC, San Bernardino, CA
Built 1975 Load: 42.1 t ADT: 98,000
INTERSTATE 15 SB
FairOver: LYTLE CREEK
08-SBD-015-13.08, San Bernardino, CA
Built 1975 Load: 42.1 t ADT: 69,000
MARKET ST
FairOver: HILLSIDE
NEAR 24TH ST, San Francisco, CA
Built 1958 Load: 42.1 t ADT: 50,000
INTERSTATE 5 SB
FairOver: MOSHER SLOUGH
10-SJ-005-33.50, San Joaquin, CA
Built 1975 Load: 42.1 t ADT: 48,000
STAGE ROAD
FairOver: PESCADERO CREEK
SOUTH OF NORTH ST, San Mateo, CA
Built 1961 Load: 42.1 t ADT: 1,230
STATE ROUTE 299
FairOver: HAT CREEK
02-SHA-299-84.02, Shasta, CA
Built 1933 Load: 42.1 t ADT: 3,200
DERSCH ROAD
FairOver: COW CREEK
0.7 MI E DESCHUTES RD, Shasta, CA
Built 1965 Load: 42.1 t ADT: 2,158
SOUTH COW CREEK RD
FairOver: CLOUGH GULCH
2.7 MI NE OF SR44, Shasta, CA
Built 1975 Load: 42.1 t ADT: 90
STATE ROUTE 49
FairOver: LADIES CANYON CREEK
03-SIE-049-24.03, Sierra, CA
Built 1932 Load: 42.1 t ADT: 600
INTERSTATE 5 SB
FairOver: HANSON ROAD (PRIVATE)
10-STA-005-17.25, Stanislaus, CA
Built 1967 Load: 42.1 t ADT: 20,500
INTERSTATE 5 NB
FairOver: HANSON ROAD (PRIVATE)
10-STA-005-17.24, Stanislaus, CA
Built 1967 Load: 42.1 t ADT: 20,500
STATE ROUTE 299
FairOver: GRASS VALLEY CREEK
02-TRI-299-65.45, Trinity, CA
Built 1963 Load: 42.1 t ADT: 3,500
INTERSTATE 505
FairOver: LONG CREEK
03-YOL-505-13.67, Yolo, CA
Built 1977 Load: 42.1 t ADT: 6,500
INTERSTATE 505
FairOver: LONG CREEK
03-YOL-505-13.66, Yolo, CA
Built 1977 Load: 42.1 t ADT: 6,500
STATE ROUTE 43
FairOver: COLE SLOUGH
06-FRE-043-0.78, Fresno, CA
Built 1953 Load: 42.4 t ADT: 12,300
U.S. HIGHWAY 101
FairOver: DEAN CRK RD & DEAN CREEK
01-HUM-101-R14.31, Humboldt, CA
Built 1967 Load: 42.4 t ADT: 5,000
SHIVELEY ROAD
FairOver: SHIVELEY CREEK
1.0 MI N OF SHIVELEY, Humboldt, CA
Built 1960 Load: 42.4 t ADT: 58
VERDE SCHOOL RD
FairOver: EAST HIGHLINE CANAL
0.8 MI E/O MILLER RD, Imperial, CA
Built 1940 Load: 42.4 t ADT: 100
SUPPLY ROW AVENUE
FairOver: SOUTH TAFT CREEK
0.18 MI N CRYSTAL STREET, Kern, CA
Built 1960 Load: 42.4 t ADT: 1,320
INTERSTATE 5 NB
FairOver: CALIFORNIA AQUEDUCT
06-KIN-005-14.92, Kings, CA
Built 1967 Load: 42.4 t ADT: 14,500
GODDE HILL RD
FairOver: CALIFORNIA AQUEDUCT
3MI N/O ELIZ LK RD, Los Angeles, CA
Built 1968 Load: 42.4 t ADT: 4,242
LARGO VISTA RD
FairOver: CALIFORNIA AQUEDUCT
0.3MI S/O SR-138 HWY, Los Angeles, CA
Built 1968 Load: 42.4 t ADT: 306
Showing 16,051-16,100 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.