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
MT. DIABLO BLVD
GoodOver: SAN RAMON CREEK
50 FT W. OF N. BROADWAY, Contra Costa, CA
Built 1971 Load: 24.3 t ADT: 14,294
U.S. HIGHWAY 50
GoodOver: CARSON CREEK
03-ED-050-R1.90L, El Dorado, CA
Built 1939 Load: 24.3 t ADT: 72,000
STATE ROUTE 198
GoodOver: WARTHAN CREEK
06-FRE-198-1.82, Fresno, CA
Built 1925 Load: 24.3 t ADT: 1,200
W NEES AVE
GoodOver: 3RD LIFT CANAL
AT FAIRFAX AVE, Fresno, CA
Built 1960 Load: 24.3 t ADT: 2,400
N. PEACH AVE
GoodOver: GOULD CANAL
AT ASHLAN AVE, Fresno, CA
Built 1969 Load: 24.3 t ADT: 13,859
N VAN NESS AVE
GoodOver: DRY CREEK CANAL
0.2 MI S OLIVE AVE, Fresno, CA
Built 1964 Load: 24.3 t ADT: 7,900
E ANNADALE AVE
GoodOver: LONE TREE CHANNEL
0.05 MI E OF FALLER AVE, Fresno, CA
Built 1971 Load: 24.3 t ADT: 3,437
MILLERTON ROAD
GoodOver: LITTLE DRY CREEK
3.93 MI E OF AUBERRY RD, Fresno, CA
Built 1925 Load: 24.3 t ADT: 400
LOS GATOS ROAD
GoodOver: LOS GATOS CREEK
17.9 MI W DERRICK BLVD, Fresno, CA
Built 1954 Load: 24.3 t ADT: 50
E. ALLUVIAL AVE
GoodOver: DRY CREEK CANAL
EAST OF CLOVIS AVE, Fresno, CA
Built 1970 Load: 24.3 t ADT: 6,600
E. FOUNTAIN WAY
GoodOver: DRY CREEK CANAL
JUST E/O MILLBROOK AVE, Fresno, CA
Built 1965 Load: 24.3 t ADT: 1,840
N SAN DIEGO AVE
GoodOver: 3RD LIFT CANAL
0.92 MI S ASHLAN, Fresno, CA
Built 1967 Load: 24.3 t ADT: 500
E SHEPHERD AVE
GoodOver: ENTERPRISE CANAL
0.11 MI W/O SUNNYSIDE, Fresno, CA
Built 1970 Load: 24.3 t ADT: 9,100
E ADAMS AVE
GoodOver: WAHTOKE CREEK
0.1 MI E OF REED AVENUE, Fresno, CA
Built 1969 Load: 24.3 t ADT: 3,000
STATE ROUTE 162
GoodOver: SALT CREEK
03-GLE-162-43.54, Glenn, CA
Built 1940 Load: 24.3 t ADT: 370
COUNTY RD 200
GoodOver: SALT CREEK
2.1 MI W OF CO RD 306, Glenn, CA
Built 1955 Load: 24.3 t ADT: 100
COUNTY ROAD 99W
GoodOver: WILLOW CREEK OVERFLOW
NORTH OF CO RD #48, Glenn, CA
Built 1937 Load: 24.3 t ADT: 2,678
CO RD #99W
GoodOver: WILSON CREEK OVERFLOW
0.5 MI N CO RD #45, Glenn, CA
Built 1915 Load: 24.3 t ADT: 2,678
OLD HWY 99W
GoodOver: NORTH FORK LOGAN CREEK
3.5 MI N OF RD #68, Glenn, CA
Built 1914 Load: 24.3 t ADT: 460
ROAD #200
GoodOver: STONY CREEK IRRG CANAL
3.1 MI W OF I-5, Glenn, CA
Built 1950 Load: 24.3 t ADT: 300
BAYLISS BLUE GUM R
GoodOver: BAYLISS SLOUGH
2.05 MI E OF I-5, Glenn, CA
Built 1958 Load: 24.3 t ADT: 1,167
BAYLISS BLUE GUM R
GoodOver: DRAIN A
6 MI E OF I-5, Glenn, CA
Built 1953 Load: 24.3 t ADT: 1,100
COUNTY RD 30
GoodOver: DRAIN A
0.01 MI E OF RD P, Glenn, CA
Built 1950 Load: 24.3 t ADT: 310
ROAD P
GoodOver: DRAIN A
0.01 MI N ROAD 30, Glenn, CA
Built 1950 Load: 24.3 t ADT: 395
COUNTY RD #9
GoodOver: TEHAMA-COLUSA CANAL
0.2 MI E OF RD 'N', Glenn, CA
Built 1970 Load: 24.3 t ADT: 1,066
ALDERPOINT RD
GoodOver: MCMAHON CREEK
14 MI N/O ALDERPOINT, Humboldt, CA
Built 1958 Load: 24.3 t ADT: 106
STATE ROUTE 111
GoodOver: ALL AMERICAN CANAL
11-IMP-111-R1.69-CLX, Imperial, CA
Built 1938 Load: 24.3 t ADT: 29,000
STATE ROUTE 86 NB
GoodOver: VIRGO WASH
11-IMP-086-60.90, Imperial, CA
Built 1979 Load: 24.3 t ADT: 7,300
STATE ROUTE 86 NB
GoodOver: ASTER DITCH
11-IMP-086-61.22, Imperial, CA
Built 1979 Load: 24.3 t ADT: 7,300
STATE ROUTE 86 NB
GoodOver: IBYCUS DITCH
11-IMP-086-61.55, Imperial, CA
Built 1979 Load: 24.3 t ADT: 7,300
STATE ROUTE 86 NB
GoodOver: FARINOSA DITCH
11-IMP-086-63.78, Imperial, CA
Built 1979 Load: 24.3 t ADT: 7,200
STATE ROUTE 86 NB
GoodOver: GODETIA DITCH
11-IMP-086-64.10, Imperial, CA
Built 1979 Load: 24.3 t ADT: 7,200
STATE ROUTE 111
GoodOver: FLY WASH
11-IMP-111-48.37, Imperial, CA
Built 1950 Load: 24.3 t ADT: 3,600
STATE ROUTE 98
GoodOver: ALL AMERICAN CANAL
11-IMP-098-30.81, Imperial, CA
Built 1938 Load: 24.3 t ADT: 8,656
STATE ROUTE 86
GoodOver: BOX WASH
11-IMP-086-R42.99, Imperial, CA
Built 1919 Load: 24.3 t ADT: 12,300
STATE ROUTE 98
GoodOver: CENTRAL (BRIAR) CANAL
11-IMP-098-34.83, Imperial, CA
Built 1938 Load: 24.3 t ADT: 5,811
STATE ROUTE 98
GoodOver: EAST ASH CANAL
11-IMP-098-38.65, Imperial, CA
Built 1938 Load: 24.3 t ADT: 14,295
STATE ROUTE 98
GoodOver: EAST HIGHLINE CANAL #2
11-IMP-098-45.63, Imperial, CA
Built 1938 Load: 24.3 t ADT: 2,850
ROSS RD
GoodOver: RESERVATION MAIN DRAIN
0.85 MI E/O PICACHO RD, Imperial, CA
Built 1961 Load: 24.3 t ADT: 1,650
BRANDT RD
GoodOver: ALAMO RIVER
0.4 MI S/O EDDINS RD, Imperial, CA
Built 1950 Load: 24.3 t ADT: 900
WHITNEY PORTAL RD
GoodOver: LONE PINE CREEK
0.8 MI W OF RTE 395 JCT, Inyo, CA
Built 1970 Load: 24.3 t ADT: 1,224
STATE ROUTE 99
GoodOver: CANAL LATERAL 29
06-KER-099-27.80, Kern, CA
Built 1933 Load: 24.3 t ADT: 130,000
STATE ROUTE 99
GoodOver: FAMOSO CATTLEPASS
06-KER-099-43.96, Kern, CA
Built 1936 Load: 24.3 t ADT: 61,000
STATE ROUTE 99
GoodOver: GILMORE AVE
06-KER-099-26.08-BKD, Kern, CA
Built 1963 Load: 24.3 t ADT: 114,000
STATE ROUTE 178
GoodOver: KERN RIVER
06-KER-178-R38.84, Kern, CA
Built 1968 Load: 24.3 t ADT: 3,900
STATE ROUTE 155
GoodOver: TILLIE CREEK
06-KER-155-R60.69, Kern, CA
Built 1951 Load: 24.3 t ADT: 6,300
ELK HILLS ROAD
GoodOver: BROAD CREEK
0.2 MI N OF S.H. 119, Kern, CA
Built 1952 Load: 24.3 t ADT: 1,050
PANAMA RD
GoodOver: EAST SIDE CANAL
0.7 MI EAST SH 184, Kern, CA
Built 1956 Load: 24.3 t ADT: 3,100
MIDWAY ROAD
GoodOver: POLLUTION CREEK
0.4 MI W OF SH 119, Kern, CA
Built 1952 Load: 24.3 t ADT: 3,900
S CHESTER AVE
GoodOver: KERN ISLAND CANAL
SOUTH OF TERRACE WAY, Kern, CA
Built 1952 Load: 24.3 t ADT: 14,062
Showing 18,251-18,300 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.