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
CREEK ROAD
FairOver: DELTA-MENDOTA CANAL
0.1 MI S CACTUS DR, Merced, CA
Built 1950 Load: 15.9 t ADT: 180
ELHOLM ROAD
FairOver: DELTA-MENDOTA CANAL
WEST OF GRAVEL PIT ROAD, Merced, CA
Built 1949 Load: 15.9 t ADT: 50
CHARLESTON ROAD
FairOver: DELTA-MENDOTA CANAL
0.2 MI W OF SR 165, Merced, CA
Built 1950 Load: 15.9 t ADT: 181
CHILES POPE VLY RD
FairOver: CHILES CREEK
2.1 MI N OF S.R. 128, Napa, CA
Built 1907 Load: 15.9 t ADT: 1,600
HAINES RD
FairOver: WISE CANAL
0.45 MI N BELL RD, Placer, CA
Built 1930 Load: 15.9 t ADT: 1,269
STATE ROUTE 160
FairOver: SACRAMENTO RIVER
03-SAC-160-20.87, Sacramento, CA
Built 1923 Load: 15.9 t ADT: 1,550
STATE ROUTE 79
FairOver: SWEETWATER RIVER
11-SD-079-4.97, San Diego, CA
Built 1949 Load: 15.9 t ADT: 3,200
KLAU MINE RD
FairOver: LAS TABLAS CREEK
2.7 MI SW ADELAIDA, San Luis Obispo, CA
Built 1940 Load: 15.9 t ADT: 93
MAIN ST
FairOver: MORRO CREEK
0.15 MI S OF RTE 41, San Luis Obispo, CA
Built 1921 Load: 15.9 t ADT: 8,500
VILLA MARIA ENT RD
FairOver: STEVENS CREEK
0.2 MI S/O STEVENS CYN RD, Santa Clara, CA
Built 1930 Load: 15.9 t ADT: 250
STEVENS CYN RD
FairOver: STEVENS CREEK
0.3 MI S/O MT EDEN RD, Santa Clara, CA
Built 1957 Load: 15.9 t ADT: 810
VIA REAL DRIVE
FairOver: SARATOGA CREEK
NEAR VIA MADRONAS DR, Santa Clara, CA
Built 1968 Load: 15.9 t ADT: 230
STATE ROUTE 9
FairOver: MARSHALL CREEK
05-SCR-009-9.85, Santa Cruz, CA
Built 1922 Load: 15.9 t ADT: 21,100
SHOVEL CREEK ROAD
FairOver: SHOVEL CREEK
GOOSENEST, Siskiyou, CA
Built 1968 Load: 15.9 t ADT: 50
PETALUMA BLVD N
FairOver: PETALUMA RIVER
0.2 MI S JCT US 101, Sonoma, CA
Built 1940 Load: 15.9 t ADT: 4,200
SALMON CREEK RD
FairOver: TANNERY CREEK
0.12 MI W TANNERY CRK RD, Sonoma, CA
Built 1920 Load: 15.9 t ADT: 100
2ND STREET
FairOver: NATHANSON CREEK
.02 MI SO. OF E. NAPA ST, Sonoma, CA
Built 1909 Load: 15.9 t ADT: 820
MORGAN ROAD
FairOver: T.I.D. LATERAL #5
JCT AT HARDING AVE, Stanislaus, CA
Built 1929 Load: 15.9 t ADT: 180
TERMINAL AVENUE
FairOver: M.I.D. MAIN CANAL
0.1 MI S CLARIBEL RD, Stanislaus, CA
Built 1948 Load: 15.9 t ADT: 3,294
LOWREY ROAD
FairOver: SOUTH FORK ELDER CREEK
9.0 MI N PASKENTA RD, Tehama, CA
Built 1942 Load: 15.9 t ADT: 90
SOUTH AVE
FairOver: SACRAMENTO RIV OVRFLO #1
3.0 MI W OF SH 99, Tehama, CA
Built 1941 Load: 15.9 t ADT: 6,552
ROAD 28N29
FairOver: MIDDLE FORK ANTELOPE
NO DATA ENTERED, Tehama, CA
Built 1954 Load: 15.9 t ADT: 20
AVE 452
FairOver: FRIANT-KERN CANAL
0.2 MI WEST OF RD 124, Tulare, CA
Built 1949 Load: 15.9 t ADT: 100
AVENUE 432
FairOver: FRIANT-KERN CANAL
AT ROAD 144, Tulare, CA
Built 1949 Load: 15.9 t ADT: 200
AVE 282 (WIRHT)
FairOver: FRIANT-KERN CANAL
0.2 MI EAST OF ROAD 206, Tulare, CA
Built 1949 Load: 15.9 t ADT: 59
AVENUE 228
FairOver: FRIANT-KERN CANAL
0.35 MI EAST OF ROAD 228, Tulare, CA
Built 1949 Load: 15.9 t ADT: 600
FEATHER RIVER BLVD
FairOver: LAKE OF THE WOODS SLOUGH
1.8 MI WEST OF S.R. 70, Yuba, CA
Built 1926 Load: 15.9 t ADT: 770
MAC ARTHUR BLVD
FairOver: SAN LEANDRO CREEK
0.25 MI S OF DUTTON AVE, Alameda, CA
Built 1909 Load: 16.2 t ADT: 7,900
MACARTHUR BLVD
FairOver: HILLSIDE
N/O LAKE PARK BLVD, Alameda, CA
Built 1928 Load: 16.2 t ADT: 5,425
MISSION BLVD
FairOver: MISSION CREEK
0.4 MI S/O SR 680, Alameda, CA
Built 1929 Load: 16.2 t ADT: 12,800
PARK BOULEVARD
FairOver: HILLSIDE
0.3 MI SW OF SR 13, Alameda, CA
Built 1932 Load: 16.2 t ADT: 18,753
PICCARDO LANE
FairOver: NORTH FORK JACKSON CREEK
200 FT WEST OF N. MAIN ST, Amador, CA
Built 1925 Load: 16.2 t ADT: 30
OROVILLE QUINCY HY
FairOver: LAKE MADRONE SPILLWAY
AT LAKE MADRONE, Butte, CA
Built 1930 Load: 16.2 t ADT: 542
GRIDLEY COLUSA HWY
FairOver: MAIN DRAINAGE CANAL
3.7 MI E/O COLUSA CO LINE, Butte, CA
Built 1934 Load: 16.2 t ADT: 715
MIDWAY RD
FairOver: HIGH LIFT LATERAL CANAL
1.2 MI N RICHVALE RD, Butte, CA
Built 1918 Load: 16.2 t ADT: 6,630
MIDWAY RD
FairOver: MIDDLE FORK HAMLIN SLU
3 MI N OF NELSON RD, Butte, CA
Built 1915 Load: 16.2 t ADT: 1,254
STILSON CANYON RD
FairOver: LITTLE CHICO CREEK
1.5 MI E HUMBOLDT RD, Butte, CA
Built 1906 Load: 16.2 t ADT: 613
ESPLANADE
FairOver: LINDO CHANNEL
0.15 MI N OF W 11TH AVE, Butte, CA
Built 1925 Load: 16.2 t ADT: 24,100
GRIDLEY COLUSA HWY
FairOver: DEVIL SLOUGH
0.3 MI E/O COLUSA CO LINE, Butte, CA
Built 1937 Load: 16.2 t ADT: 1,139
GRIDLEY COLUSA HWY
FairOver: GRAIN SLOUGH
0.4 MI E/O COLUSA CO LINE, Butte, CA
Built 1939 Load: 16.2 t ADT: 1,139
ORVILLE-GRDLEY HWY
FairOver: SUTTER-BUTTE CANAL
0.5 MI E/O LARKIN RD, Butte, CA
Built 1920 Load: 16.2 t ADT: 5,298
OPENSHAW RD
FairOver: DRY CREEK OVERFLOW
0.2 MI N/W SHIPPEE RD, Butte, CA
Built 1922 Load: 16.2 t ADT: 10
VALLOMBROSA AVE
FairOver: BIG CHICO CREEK
BTW 1ST ST & MEMORIAL WY, Butte, CA
Built 1949 Load: 16.2 t ADT: 15,000
KEEFER RD
FairOver: KEEFER SLOUGH
2.5 MI E/O SH 99, Butte, CA
Built 1930 Load: 16.2 t ADT: 17,020
CANA HWY
FairOver: DIANE'S DITCH NO 2
1.4 MI W STATE HWY 99, Butte, CA
Built 1921 Load: 16.2 t ADT: 276
HAMILTON NORD CANA
FairOver: RED BARN SLOUGH
4.98 MI N OF HWY 32, Butte, CA
Built 1936 Load: 16.2 t ADT: 562
NORD GIANELLA RD
FairOver: BARE POLE DITCH
0.9 MI W HMTN ND CANA HY, Butte, CA
Built 1940 Load: 16.2 t ADT: 85
NORD GIANELLA ROAD
FairOver: CHANNEL CROSSING
0.6 MI W HMTN ND CANA HY, Butte, CA
Built 1940 Load: 16.2 t ADT: 93
MERIDIAN RD
FairOver: GRASSY BANKS DITCH
0.1 MI N OF HWY 32, Butte, CA
Built 1935 Load: 16.2 t ADT: 1,820
HICKS LANE
FairOver: KEEFER SLOUGH
0.25 MI S KEEFER RD, Butte, CA
Built 1940 Load: 16.2 t ADT: 2,900
Showing 8,301-8,350 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.