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
W RIVERDALE AVE
FairOver: RIVERDALE DITCH
0.02 MI E OF WALNUT AVE, Fresno, CA
Built 1935 Load: 24.3 t ADT: 900
E. DAKOTA AVE
FairOver: DRY CREEK CANAL
EAST OF CEDAR AVE, Fresno, CA
Built 1965 Load: 24.3 t ADT: 9,809
E ADAMS AVE
FairOver: WAHTOKE CREEK
0.02 MI EAST OF REED AVE, Fresno, CA
Built 1969 Load: 24.3 t ADT: 3,000
W BELMONT AVE
FairOver: HOUGHTON CANAL
AT N CORNELIA AVE, Fresno, CA
Built 1970 Load: 24.3 t ADT: 3,800
STATE ROUTE 162
FairOver: CENTRAL IRRIGATION CANAL
03-GLE-162-67.21, Glenn, CA
Built 1925 Load: 24.3 t ADT: 3,050
STATE ROUTE 162
FairOver: NYE CREEK
03-GLE-162-51.69, Glenn, CA
Built 1953 Load: 24.3 t ADT: 530
ROAD 'D'
FairOver: GLENN-COLUSA CANAL
0.6 MI N/O ROAD 68, Glenn, CA
Built 1962 Load: 24.3 t ADT: 268
COUNTY RD 306
FairOver: DRY CREEK
1.58 MI N COLUSA CO LINE, Glenn, CA
Built 1951 Load: 24.3 t ADT: 150
COUNTY RD 'D'
FairOver: N FK WILLOW CREEK
3.6 MI N OF S.H. 162, Glenn, CA
Built 1966 Load: 24.3 t ADT: 491
COUNTY ROAD #25
FairOver: BRANCH WALKER CREEK
0.2 MI W CO RD 'H', Glenn, CA
Built 1970 Load: 24.3 t ADT: 378
ROAD 57
FairOver: SWALLOW DRAIN
1.0 MI W RD V, Glenn, CA
Built 1945 Load: 24.3 t ADT: 45
ROAD 'V'
FairOver: PROVIDENT CANAL
JUST S OF HWY 162, Glenn, CA
Built 1949 Load: 24.3 t ADT: 168
ROAD 'D'
FairOver: SHOAT DRAW
0.9 MI S/O ROAD 65, Glenn, CA
Built 1950 Load: 24.3 t ADT: 280
CO RD 'R'
FairOver: QUINT CANAL
0.2 MI S STATE HWY 162, Glenn, CA
Built 1965 Load: 24.3 t ADT: 25
CO RD #99W
FairOver: WILLOW CREEK OVERFLOW
0.2 MI N CO RD #45, Glenn, CA
Built 1915 Load: 24.3 t ADT: 2,678
CO RD 99W
FairOver: EAST FORK WILSON CREEK
0.2 MI N CO RD #43, Glenn, CA
Built 1915 Load: 24.3 t ADT: 2,678
ROAD #200
FairOver: STONY CREEK IRRG CANAL
6.45 MI W OF I-5, Glenn, CA
Built 1950 Load: 24.3 t ADT: 300
ROAD #313
FairOver: WATSON CREEK
0.1 MI W OF RD #306, Glenn, CA
Built 1960 Load: 24.3 t ADT: 25
ROAD 42
FairOver: EAST FORK WILSON CREEK
JUST W OF HWY 99W, Glenn, CA
Built 1960 Load: 24.3 t ADT: 79
ROAD WW
FairOver: DRAIN DITCH
N OF C.R. # 92 F, Glenn, CA
Built 1947 Load: 24.3 t ADT: 11
ROAD #68
FairOver: BRANCH HUNTER CREEK
JUST WEST OF RD 'F', Glenn, CA
Built 1968 Load: 24.3 t ADT: 180
COUNTY ROAD 39
FairOver: SHEEP CORRAL CREEK
0.2 MI. EAST OF CR D, Glenn, CA
Built 1970 Load: 24.3 t ADT: 491
COUNTY ROAD 39
FairOver: WILSON CREEK
0.75 MI EAST OF CR D, Glenn, CA
Built 1950 Load: 24.3 t ADT: 491
BALD HILLS ROAD
FairOver: KLAMATH RIVER
AT INTERSECTION SR 169, Humboldt, CA
Built 1959 Load: 24.3 t ADT: 43
MCCANN ROAD
FairOver: EEL RIVER
E DYERVILLE LOOP RD, Humboldt, CA
Built 1965 Load: 24.3 t ADT: 100
STATE PARK ROAD
FairOver: UPPER DURPHY CREEK
RICHARDSON GROVE ST. PK., Humboldt, CA
Built 1965 Load: 24.3 t ADT: 300
STATE ROUTE 111
FairOver: CEDAR WASH
11-IMP-111-48.85, Imperial, CA
Built 1950 Load: 24.3 t ADT: 3,600
ST RTE 98, BOWKER
FairOver: ALL AMERICAN CANAL
11-IMP-098-34.43, Imperial, CA
Built 1938 Load: 24.3 t ADT: 15,343
IN-KO-PAH RD
FairOver: BOULDER CREEK
0.44 MI E/O SD CO LINE, Imperial, CA
Built 1932 Load: 24.3 t ADT: 138
EVAN HEWES HWY
FairOver: OCOTILLO WASH
0.4 MI E/O IMPERIAL HWY, Imperial, CA
Built 1932 Load: 24.3 t ADT: 272
TITSWORTH RD
FairOver: EAST HIGHLINE CANAL
1.5 MI E/O BUTTERS RD, Imperial, CA
Built 1950 Load: 24.3 t ADT: 50
FLOWING WELLS ROAD
FairOver: EAST HIGHLINE CANAL
4.0 MI E/O SR 111, Imperial, CA
Built 1950 Load: 24.3 t ADT: 50
NECKEL ROAD
FairOver: CENTRAL MAIN CANAL
50 FT E/O AUSTIN RD, Imperial, CA
Built 1972 Load: 24.3 t ADT: 630
STATE ROUTE 166
FairOver: SAN EMIGDIO CREEK
06-KER-166-12.52, Kern, CA
Built 1929 Load: 24.3 t ADT: 3,300
STATE ROUTE 155
FairOver: POSO CREEK
06-KER-155-38.79, Kern, CA
Built 1943 Load: 24.3 t ADT: 300
STATE ROUTE 99 NB
FairOver: LERDO CANAL
06-KER-099-32.42, Kern, CA
Built 1936 Load: 24.3 t ADT: 90,000
STATE ROUTE 178
FairOver: HILLSIDE
06-KER-178-13.78, Kern, CA
Built 1922 Load: 24.3 t ADT: 4,350
STATE ROUTE 99
FairOver: LERDO CANAL
06-KER-099-R43.90L, Kern, CA
Built 1936 Load: 24.3 t ADT: 61,000
STATE ROUTE 178
FairOver: EAST SIDE CANAL
06-KER-178-R2.42-BKD, Kern, CA
Built 1986 Load: 24.3 t ADT: 75,000
STATE ROUTE 155
FairOver: TILLIE CREEK OVERFLOW
06-KER-155-R60.88, Kern, CA
Built 1951 Load: 24.3 t ADT: 6,300
STATE ROUTE 155
FairOver: RATTLESNAKE CREEK
06-KER-155-64.92, Kern, CA
Built 1951 Load: 24.3 t ADT: 6,600
UNION AVENUE
FairOver: EAST BRANCH CANAL
0.05MI N/O BELLE TERRACE, Kern, CA
Built 1914 Load: 24.3 t ADT: 29,000
WALKER BASIN RD
FairOver: RANCHERIA CREEK
1.17 MI W PIUTE MOUNTN RD, Kern, CA
Built 1971 Load: 24.3 t ADT: 180
OLD RIVER ROAD
FairOver: CALIFORNIA AQUEDUCT
0.5 MI NORTH OF RTE 166, Kern, CA
Built 1968 Load: 24.3 t ADT: 2,301
6TH STREET
FairOver: SANDY CREEK
SOUTH OF ASH STREET, Kern, CA
Built 1972 Load: 24.3 t ADT: 6,500
OLIVE DRIVE
FairOver: CANAL LATERAL 29
EAST OF STATE RD, Kern, CA
Built 1969 Load: 24.3 t ADT: 20,000
OLIVE DRIVE
FairOver: BEARDSLEY CANAL
0.1 MI W AIRPORT DR, Kern, CA
Built 1968 Load: 24.3 t ADT: 13,000
ROBERTS LANE
FairOver: BEARDSLEY CANAL
NORTH OF OLIVE DRIVE, Kern, CA
Built 1968 Load: 24.3 t ADT: 9,000
34TH STREET
FairOver: KERN ISLAND CANAL
WEST OF UNION, Kern, CA
Built 1972 Load: 24.3 t ADT: 10,689
BELLE TERRACE WAY
FairOver: KERN ISLAND CANAL
EAST OF 'H' STREET, Kern, CA
Built 1950 Load: 24.3 t ADT: 4,133
Showing 10,101-10,150 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.