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
GRAND VIEW AVE
FairOver: SIERRA MADRE WASH
0.4MI W/O SANTA ANITA AVE, Los Angeles, CA
Built 1939 Load: 33.0 t ADT: 1,428
INTERSTATE 5 SB
FairOver: LAGUNA SECA CREEK ROAD
10-MER-005-2.86, Merced, CA
Built 1971 Load: 33.0 t ADT: 17,500
INTERSTATE 5 NB
FairOver: LAGUNA SECA CREEK ROAD
10-MER-005-2.86, Merced, CA
Built 1971 Load: 33.0 t ADT: 19,000
WEST 'I' STREET
FairOver: CCID MAIN CANAL
JUST S OF SR 152, Merced, CA
Built 1963 Load: 33.0 t ADT: 4,320
STATE ROUTE 1
FairOver: HOT SPRINGS CREEK
05-MON-001-32.81, Monterey, CA
Built 1963 Load: 33.0 t ADT: 2,000
BORONDA RD
FairOver: MAIN CANAL
0.3 MI N OF SH 183, Monterey, CA
Built 1960 Load: 33.0 t ADT: 2,800
ATLAS PEAK ROAD
FairOver: MILLIKEN CREEK
0.35 MI NW OF SR 121, Napa, CA
Built 1969 Load: 33.0 t ADT: 3,745
BURNING TREE RD
FairOver: BREA CREEK CHANNEL
100' S/O MALVERN AVE, Orange, CA
Built 1991 Load: 33.0 t ADT: 1,551
INTERSTATE 10 EB
FairOver: COXCOMB DITCH
08-RIV-010-R106.63, Riverside, CA
Built 1967 Load: 33.0 t ADT: 21,400
STATE ROUTE 60
FairOver: WINEVILLE RD
08-RIV-060-R0.99, Riverside, CA
Built 1973 Load: 33.0 t ADT: 138,000
N/B INDIO BLVD.
FairOver: UP RR & AMTRAK
0.3 MI. W/O JEFFERSON ST., Riverside, CA
Built 1936 Load: 33.0 t ADT: 16,800
JEFFERSON AVENUE
FairOver: NORTH FORK YODER WASH
0.3 MI S/O MURRTA HOT SPS, Riverside, CA
Built 1996 Load: 33.0 t ADT: 23,546
SR 210U (HIGHLAND)
FairOver: LYTLE CREEK
08-SBD-210U-20.82-RIA, San Bernardino, CA
Built 1967 Load: 33.0 t ADT: 19,800
INTERSTATE 40 EB
FairOver: GRANITE MOUNTAIN WASH
08-SBD-040-R76.50, San Bernardino, CA
Built 1972 Load: 33.0 t ADT: 16,500
S15-MAIN ST OFFRMP
FairOver: SOUTH BRANCH CHOLLAS CRK
11-SD-015-0.46-SD, San Diego, CA
Built 1953 Load: 33.0 t ADT: 9,500
CARLSBAD BLVD N/B
FairOver: DRAINAGE DITCH
0.1MI N/O AVENIDA ENCINAS, San Diego, CA
Built 1952 Load: 33.0 t ADT: 8,146
STATE ROUTE 99
FairOver: STOCKTON DIVERTING CANAL
10-SJ-099-20.12, San Joaquin, CA
Built 1949 Load: 33.0 t ADT: 83,000
RIVERMONT DRIVE
FairOver: PIXLEY SLOUGH
SOUTH OF W EIGHT MILE RD, San Joaquin, CA
Built 2008 Load: 33.0 t ADT: 1,000
INTERSTATE 280
FairOver: STANFORD LINEAR ACCEL
04-SM-280-R1.02, San Mateo, CA
Built 1965 Load: 33.0 t ADT: 101,000
STATE ROUTE 154
FairOver: COLD SPRING CANYON
05-SB-154-22.96, Santa Barbara, CA
Built 1963 Load: 33.0 t ADT: 13,500
REFUGIO ROAD
FairOver: REFUGIO CREEK
0.3 MI N OF SR 101, Santa Barbara, CA
Built 1959 Load: 33.0 t ADT: 470
CURTNER AVE
FairOver: UP RR
AT SP RR, Santa Clara, CA
Built 1962 Load: 33.0 t ADT: 26,548
FORBES AVE
FairOver: SARATOGA CREEK
0.15 MI E/O POMEROY, Santa Clara, CA
Built 1960 Load: 33.0 t ADT: 1,727
INTERSTATE 5 NB
FairOver: UPPER SALT CREEK ROAD
02-SHA-005-R37.08, Shasta, CA
Built 1966 Load: 33.0 t ADT: 8,800
WESTSIDE AVE
FairOver: CANYON HOLLOW CREEK
0.1 MI S CANYON CREEK RD, Shasta, CA
Built 1957 Load: 33.0 t ADT: 6,400
EASTSIDE RD
FairOver: CANYON HOLLOW CREEK
0.3 MI N RADIO LANE, Shasta, CA
Built 1950 Load: 33.0 t ADT: 3,728
S BONNYVIEW RD WB
FairOver: SACRAMENTO RIVER
1.7 MI E/O SR 273, Shasta, CA
Built 1978 Load: 33.0 t ADT: 21,320
SAWYERS BAR RD
FairOver: LITTLE N FK SALMON RIVER
1 MI W KELLEY GULCH RD, Siskiyou, CA
Built 1968 Load: 33.0 t ADT: 120
INTERSTATE 505 SB
FairOver: ALLENDALE RD
04-SOL-505-R5.57, Solano, CA
Built 1974 Load: 33.0 t ADT: 11,400
MERIDIAN RD
FairOver: NEW ALAMO CREEK CHANNEL
0.5 MI S FRY RD, Solano, CA
Built 1965 Load: 33.0 t ADT: 1,820
STONY POINT RD
FairOver: LAGUNA DE SANTA ROSA
0.65 MI N OF LOWELL AVE, Sonoma, CA
Built 1960 Load: 33.0 t ADT: 10,300
MILL CREEK RD
FairOver: MILL CREEK
1.9 MI W OF WESTSIDE RD, Sonoma, CA
Built 1966 Load: 33.0 t ADT: 210
OAK FLAT ROAD
FairOver: CALIFORNIA AQUEDUCT
0.4 MI WEST OF WARD AVE, Stanislaus, CA
Built 1966 Load: 33.0 t ADT: 158
AVE 392
FairOver: TRAVER DITCH
0.05 MI E OF RD 48, Tulare, CA
Built 1946 Load: 33.0 t ADT: 175
NO DATA ENTERED
FairOver: PHILDEPHIA DITCH SPILLWA
04N88, Tuolumne, CA
Built 1960 Load: 33.0 t ADT: 50
VICTORIA AVE
FairOver: SANTA CLARA RIVER
1.3 MI SOUTH ROUTE 101, Ventura, CA
Built 1977 Load: 33.0 t ADT: 45,500
INTERSTATE 505
FairOver: COTTONWOOD SLOUGH
03-YOL-505-9.66, Yolo, CA
Built 1959 Load: 33.0 t ADT: 6,000
MIDDLE HONCUT RD
FairOver: WYMAN RAVINE
0.3 MI E OF SH 70, Butte, CA
Built 1968 Load: 33.4 t ADT: 70
STATE ROUTE 4
FairOver: LITTLEJOHNS CREEK
10-CAL-004-R5.89, Calaveras, CA
Built 1972 Load: 33.4 t ADT: 5,400
LENAHAN ROAD
FairOver: FUNKS CREEK
0.2 MI E OF SUTTON ROAD, Colusa, CA
Built 1971 Load: 33.4 t ADT: 40
LINCOLN AVE
FairOver: WALNUT CREEK
0.1 MI E NORTH BROADWAY, Contra Costa, CA
Built 1957 Load: 33.4 t ADT: 2,200
ARNOLD DRIVE
FairOver: BNSF RY
AT MUIR TUNNEL, Contra Costa, CA
Built 1975 Load: 33.4 t ADT: 3,000
OREGON MOUNTAIN RD
FairOver: ELK CREEK
0.1 MILE NE/O RTE 199, Del Norte, CA
Built 1925 Load: 33.4 t ADT: 40
STATE ROUTE 180
FairOver: MOWRY DRAW
06-FRE-180-28.24, Fresno, CA
Built 1946 Load: 33.4 t ADT: 5,650
STATE ROUTE 41 NB
FairOver: M STREET
06-FRE-041-R22.80-FRE, Fresno, CA
Built 1974 Load: 33.4 t ADT: 38,000
INTERSTATE 5 SB
FairOver: FIVE POINTS UC
06-FRE-005-15.96, Fresno, CA
Built 1967 Load: 33.4 t ADT: 16,500
STATE ROUTE 145
FairOver: CALIFORNIA AQUEDUCT
06-FRE-145-3.02, Fresno, CA
Built 1966 Load: 33.4 t ADT: 4,600
S CHESTNUT AVE
FairOver: CENTRAL CANAL
0.1 MI N JCT JENSEN AVE, Fresno, CA
Built 1900 Load: 33.4 t ADT: 15,202
E EDGAR AVE
FairOver: FRIANT-KERN CANAL
0.45 MI E/O NAVELENCIA AV, Fresno, CA
Built 1955 Load: 33.4 t ADT: 200
N GATES AVE
FairOver: HERNDON CANAL
0.5 MI NE OF SHAW AVE, Fresno, CA
Built 1960 Load: 33.4 t ADT: 14,083
Showing 14,851-14,900 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.