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
RD 305 (MAPES RD)
FairOver: SUSAN RIVER OVERFLOW #6
1.7 MI E/O RD 304, Lassen, CA
Built 1978 Load: 14.6 t ADT: 100
TELEGRAPH RD
FairOver: SAN GABRIEL RIV
0.2MI W/O I-605 FWY, Los Angeles, CA
Built 1937 Load: 14.6 t ADT: 44,300
HEARST-WILLITS RD
FairOver: EEL RIVER
5.4 MI N JCT TOMKI RD, Mendocino, CA
Built 1957 Load: 14.6 t ADT: 66
LUTHER RD
FairOver: WISE CANAL
JUST EAST HWY 49, Placer, CA
Built 1973 Load: 14.6 t ADT: 8,138
BREWER RD
FairOver: COON CREEK
1.5 MI N OF NICOLAUS RD, Placer, CA
Built 1938 Load: 14.6 t ADT: 95
MINERAL ROAD
FairOver: MOJAVE RIVER
0.1 MI NE/O D STREET, San Bernardino, CA
Built 1928 Load: 14.6 t ADT: 20
NAT TRAILS HWY
FairOver: ARLETTA DITCH
9.9 MI E KELBAKER RD, San Bernardino, CA
Built 1943 Load: 14.6 t ADT: 502
SOUTH MELROSE DR
FairOver: AGUA HEDIONDA CREEK
0.5 MI S/O SHADOWRIDGE DR, San Diego, CA
Built 1990 Load: 14.6 t ADT: 15,600
SOUTH MELROSE DR
FairOver: AGUA HEDIONDA CREEK
0.5 MI S/O SHADOWRIDGE DR, San Diego, CA
Built 1990 Load: 14.6 t ADT: 15,600
BROAD ST
FairOver: STENNER CREEK
AT RTE 101, San Luis Obispo, CA
Built 1909 Load: 14.6 t ADT: 4,496
PORTLAND AVE
FairOver: PERMANENTE CREEK
E MIRAMONTE AVE, Santa Clara, CA
Built 1920 Load: 14.6 t ADT: 4,000
LLAGAS AVE
FairOver: LLAGAS CREEK
0.8 MI N SAN MARTIN AVE, Santa Clara, CA
Built 1925 Load: 14.6 t ADT: 1,780
LLAGAS AVE
FairOver: LLAGAS CREEK
0.6 MI N SAN MARTIN AVE, Santa Clara, CA
Built 1925 Load: 14.6 t ADT: 1,780
CORAM ROAD
FairOver: COTTONWOOD CREEK
1.75 MI E OF SHASTA DAM, Shasta, CA
Built 2006 Load: 14.6 t ADT: 50
SACRAMENTO AVE
FairOver: SACRAMENTO RIVER
AT RIVER AVE, Siskiyou, CA
Built 1965 Load: 14.6 t ADT: 175
SR 12
FairOver: AGUA CALIENTE CREEK
04-SON-012-35.75, Sonoma, CA
Built 1924 Load: 14.6 t ADT: 18,600
VERANO AVE
FairOver: SONOMA CREEK
0.7 MI E ARNOLD DR, Sonoma, CA
Built 1949 Load: 14.6 t ADT: 9,700
CHASE ST
FairOver: NATHANSON CREEK
0.1 MI E SR 12 SONOMA, Sonoma, CA
Built 1910 Load: 14.6 t ADT: 600
PINE CREEK RD
FairOver: PINE CREEK
3.3 MI W/O REEDS CREEK RD, Tehama, CA
Built 1969 Load: 14.6 t ADT: 80
MCCARTY CREEK RD
FairOver: MCCARTY CREEK
0.7 MI W LOWERY RD, Tehama, CA
Built 1974 Load: 14.6 t ADT: 30
AVE 216 (CITRUS)
FairOver: FRIANT-KERN CANAL
0.25 MI EAST OF ROAD 228, Tulare, CA
Built 1949 Load: 14.6 t ADT: 325
AVE 208 (5TH AVE)
FairOver: FRIANT-KERN CANAL
0.25 MI WEST OF ROAD 232, Tulare, CA
Built 1949 Load: 14.6 t ADT: 250
AVENUE 160
FairOver: FRIANT-KERN CANAL
0.75 MI WEST OF ROAD 224, Tulare, CA
Built 1949 Load: 14.6 t ADT: 1,175
STATE ROUTE 120
FairOver: DON PEDRO RESERVOIR
10-TUO-120-R19.61, Tuolumne, CA
Built 1971 Load: 14.6 t ADT: 3,800
RAWHIDE RD
FairOver: WOODS CREEK
0.05 MI NW OF SR 49, Tuolumne, CA
Built 1920 Load: 14.6 t ADT: 4,149
STATE ROUTE 1
FairOver: UP RR & AMTRAK
07-VEN-001-21.54, Ventura, CA
Built 1934 Load: 14.6 t ADT: 4,000
OLD CANYON RD
FairOver: ALAMEDA CREEK
0.08 MI EAST OF ST RTE 84, Alameda, CA
Built 1948 Load: 14.9 t ADT: 2,700
RIVER RD
FairOver: SHADY OAKS SLOUGH
3.66 MI N ORD FERRY RD, Butte, CA
Built 1931 Load: 14.9 t ADT: 1,256
REQUA ROAD
FairOver: HUNTER CREEK
0.1 MI WEST OF RT101, Del Norte, CA
Built 1949 Load: 14.9 t ADT: 1,110
N. BLACKSTONE AVE
FairOver: DRY CREEK CANAL
NEAR E. OLIVE AVE, Fresno, CA
Built 1941 Load: 14.9 t ADT: 4,000
S COVE AVE
FairOver: FRIANT-KERN CANAL
0.85 MI N/O AMERICAN AVE, Fresno, CA
Built 1947 Load: 14.9 t ADT: 1,000
ROAD 16
FairOver: CENTRAL IRRIGATION CANAL
0.02 MI W HWY 45, Glenn, CA
Built 1930 Load: 14.9 t ADT: 249
STATE ROUTE 18
FairOver: UP RR
07-LA-018-0.19, Los Angeles, CA
Built 1967 Load: 14.9 t ADT: 6,800
DELL AVE
FairOver: CARROLL CANAL
200FT S/O VENICE BLVD, Los Angeles, CA
Built 1907 Load: 14.9 t ADT: 1,582
DELL AVENUE
FairOver: LINNIE CANAL
480FT S/O VENICE BLVD, Los Angeles, CA
Built 1907 Load: 14.9 t ADT: 1,582
DELL AVENUE
FairOver: HOWLAND CANAL
1.5MI S/O VENICE BLVD, Los Angeles, CA
Built 1907 Load: 14.9 t ADT: 1,582
DELL AVENUE
FairOver: SHERMAN CANAL
0.2MI S/O VENICE BLVD, Los Angeles, CA
Built 1907 Load: 14.9 t ADT: 1,582
SIR-FRANCIS DRAKE
FairOver: CORTE MADERA CR(DRAKE)
3.5 MI W SR 101 SN ANSLM, Marin, CA
Built 1929 Load: 14.9 t ADT: 34,000
WINSHIP ROAD
FairOver: CORTE MADERA CREEK
0.03 MI E/O SIR FRAN DRK, Marin, CA
Built 1909 Load: 14.9 t ADT: 2,000
BULL CREEK ROAD
FairOver: BULL CREEK
4.5 MI SE OLD YOSEMITE RD, Mariposa, CA
Built 1950 Load: 14.9 t ADT: 100
N STATE ST
FairOver: ORRS CREEK
24.9 MI N SON CO LINE, Mendocino, CA
Built 1926 Load: 14.9 t ADT: 18,278
BUNKER ROAD
FairOver: CCID MAIN CANAL
1.3 MI EAST OF SR 33, Merced, CA
Built 1923 Load: 14.9 t ADT: 100
LARKIN ST
FairOver: HARTNELL GULCH
0.05 MI S MADISON ST, Monterey, CA
Built 1914 Load: 14.9 t ADT: 3,000
STATE ROUTE 29
FairOver: SULPHUR CREEK
04-NAP-029-28.43-SHLA, Napa, CA
Built 1910 Load: 14.9 t ADT: 24,000
MAIN STREET
FairOver: NAPA CREEK
SOUTHEAST PEARL ST, Napa, CA
Built 1860 Load: 14.9 t ADT: 5,972
AETNA SPRINGS RD
FairOver: SWARTZ CREEK
0.8 MI W POPE VALLEY RD, Napa, CA
Built 1912 Load: 14.9 t ADT: 346
TRANCAS ST
FairOver: MILLIKEN CREEK
JUST WEST OF SR 121, Napa, CA
Built 1908 Load: 14.9 t ADT: 3,000
PEARL ST
FairOver: NAPA CREEK
BTWN MAIN AND COOMBS STS, Napa, CA
Built 1920 Load: 14.9 t ADT: 3,400
BASQUE AVE
FairOver: BREA CREEK CHANNEL
100' S/O MALVERN AVE, Orange, CA
Built 1940 Load: 14.9 t ADT: 8,000
BROADWAY
FairOver: SUNSET CHANNEL
100' NE/O PACIFIC CST HWY, Orange, CA
Built 1959 Load: 14.9 t ADT: 2,500
Showing 8,051-8,100 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.