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
US HIGHWAY 101
UnknownOver: WEST RAILROAD AVENUE
04-SON-101-10.67, Sonoma, CA
Built 2011 ADT: 4,000
US HIGHWAY 101
UnknownOver: SR 116 GRAVENSTEIN HWY
04-SON-101-12.70-COTI, Sonoma, CA
Built 2011 ADT: 22,500
OLD REDWOOD HWY N
UnknownOver: US HIGHWAY 101
04-SON-101-7.65-PET, Sonoma, CA
Built 2014 ADT: 94,000
KASTANIA ROAD
UnknownOver: US HIGHWAY 101
04-SON-101-2.60-PET, Sonoma, CA
Built 2014 ADT: 76,000
US HIGHWAY 101
UnknownOver: PETALUMA RIVER
04-SON-101-3.23-PET, Sonoma, CA
Built 2016 ADT: 10,000
AIRPORT BLVD
UnknownOver: US HIGHWAY 101
04-SON-101-26.30, Sonoma, CA
Built 2014 ADT: 62,000
US HIGHWAY 101
UnknownOver: STEELE LANE
04-SON-101-21.74-SRO, Sonoma, CA
Built 2009 ADT: 150,000
NCRRA/NWP RR
UnknownOver: OLD REDWOOD HWY
32.2 MI N MARIN LINE, Sonoma, CA
Built 1915 ADT: 5,900
GRAPE VINES
UnknownOver: MARK WEST SPRINGS ROAD
4.9 MI NE INTX OLD RD HY, Sonoma, CA
Built 1975 ADT: 10,000
BICENTENNIAL WAY
UnknownOver: FOUNTAINGROVE PARKWAY
0.5 MI E OF RTE 101, Sonoma, CA
Built 1985 ADT: 1,000
FOUNTAIN GROVE PKW
UnknownOver: CHANATE ROAD
AT CHANATE ROAD, Sonoma, CA
Built 1997 ADT: 1,200
FOUNTAIN GROVE PKW
UnknownOver: CHANATE ROAD
AT CHANATE ROAD, Sonoma, CA
Built 1997 ADT: 1,200
STATE ROUTE 99 SB
UnknownOver: ST RTE 165 (LANDER AVE)
10-STA-099-R1.63-TUR, Stanislaus, CA
Built 1973 ADT: 18,800
STATE ROUTE 99 NB
UnknownOver: ST RTE 165 (LANDER AVE)
10-STA-099-R1.63-TUR, Stanislaus, CA
Built 1973 ADT: 18,800
STATE ROUTE 99
UnknownOver: SECOND ST-SB 99 ON RAMP
10-STA-099-R11.55-CER, Stanislaus, CA
Built 1965 ADT: 2,200
STATE ROUTE 99
UnknownOver: SB 99-NORTH ST OFF RAMP
10-STA-099-R11.62-CER, Stanislaus, CA
Built 1965 ADT: 6,600
PINE STREET
UnknownOver: SR 99,RAMP,STREET,UP RR
10-STA-099-R11.30-CER, Stanislaus, CA
Built 1965 ADT: 1,050
STATE ROUTE 99 SB
UnknownOver: 7TH STREET & UP RR
10-STA-099-R14.03, Stanislaus, CA
Built 1963 ADT: 6,600
STATE ROUTE 99 NB
UnknownOver: 7TH STREET & UP RR
10-STA-099-R14.03, Stanislaus, CA
Built 1963 ADT: 6,600
CROWS LANDING ROAD
UnknownOver: STATE ROUTE 99 & RAMP
10-STA-099-R14.47-TUR, Stanislaus, CA
Built 1963 ADT: 105,000
LINWOOD AVE
UnknownOver: STATE ROUTE 99
10-STA-099-R2.29-TUR, Stanislaus, CA
Built 1973 ADT: 79,000
HATCH ROAD
UnknownOver: STATE ROUTE 99
10-STA-099-R13.26-CER, Stanislaus, CA
Built 1962 ADT: 101,000
HATCH ROAD
UnknownOver: 9TH-S99, 7TH ST, & UP RR
10-STA-099-R13.28, Stanislaus, CA
Built 1962 ADT: 7,800
STATE ROUTE 99 SB
UnknownOver: 9TH STREET
10-STA-099-R13.90, Stanislaus, CA
Built 1963 ADT: 7,100
STATE ROUTE 99 NB
UnknownOver: 9TH STREET
10-STA-099-R13.90, Stanislaus, CA
Built 1963 ADT: 7,100
STATE ROUTE 99
UnknownOver: 9TH STREET & UP RR
10-STA-099-R17.93-MOD, Stanislaus, CA
Built 1963 ADT: 17,700
CARPENTER-BRIGSMRE
UnknownOver: STATE ROUTE 99
10-STA-099-M18.52-MOD, Stanislaus, CA
Built 1976 ADT: 121,000
KANSAS AVE
UnknownOver: STATE ROUTE 99
10-STA-099-R16.82-MOD, Stanislaus, CA
Built 1963 ADT: 121,000
WOODLAND AVE
UnknownOver: STATE ROUTE 99
10-STA-099-R17.51-MOD, Stanislaus, CA
Built 1963 ADT: 121,000
G STREET
UnknownOver: STATE ROUTE 99 & RAMP
10-STA-099-R15.66-MOD, Stanislaus, CA
Built 1963 ADT: 105,000
H STREET
UnknownOver: STATE ROUTE 99
10-STA-099-R15.75-MOD, Stanislaus, CA
Built 1963 ADT: 105,000
I STREET
UnknownOver: STATE ROUTE 99
10-STA-099-R15.85-MOD, Stanislaus, CA
Built 1963 ADT: 105,000
K STREET
UnknownOver: STATE ROUTE 99 & RAMP
10-STA-099-R16.03-MOD, Stanislaus, CA
Built 1963 ADT: 13,125
STATE ROUTE 132
UnknownOver: STATE ROUTE 99
10-STA-132-14.71-MOD, Stanislaus, CA
Built 1963 ADT: 105,000
STATE ROUTE 99
UnknownOver: MITCHELL RD
10-STA-099-R10.16, Stanislaus, CA
Built 1965 ADT: 21,000
SERVICE RD
UnknownOver: STATE ROUTE 99 & UP RR
10-STA-099-R10.58, Stanislaus, CA
Built 1965 ADT: 101,000
SIERRA DR
UnknownOver: STATE ROUTE 99 & RAMP
10-STA-099-R15.37-MOD, Stanislaus, CA
Built 1963 ADT: 105,000
STATE ROUTE 99 SB
UnknownOver: TUOLUMNE BLVD
10-STA-099-R15.10, Stanislaus, CA
Built 1963 ADT: 9,600
STATE ROUTE 99 NB
UnknownOver: TUOLUMNE BLVD
10-STA-099-R15.10, Stanislaus, CA
Built 1963 ADT: 9,600
PETE MILLER RD
UnknownOver: INTERSTATE 5
10-STA-005-0.89, Stanislaus, CA
Built 1967 ADT: 35,000
STUHR ROAD
UnknownOver: INTERSTATE 5
10-STA-005-5.51, Stanislaus, CA
Built 1967 ADT: 35,000
SIMON NEWMAN RD
UnknownOver: INTERSTATE 5
10-STA-005-7.45, Stanislaus, CA
Built 1967 ADT: 35,000
DAVIS ROAD
UnknownOver: INTERSTATE 5
10-STA-005-9.45, Stanislaus, CA
Built 1967 ADT: 36,000
STATE ROUTE 99 SB
UnknownOver: WALNUT AVE
10-STA-099-R3.08-TUR, Stanislaus, CA
Built 1973 ADT: 1,000
STATE ROUTE 99 NB
UnknownOver: WALNUT AVE
10-STA-099-R3.08-TUR, Stanislaus, CA
Built 1973 ADT: 1,000
GOLF RD
UnknownOver: STATE ROUTE 99
10-STA-099-R0.52-TUR, Stanislaus, CA
Built 1973 ADT: 57,000
KEYES ROAD
UnknownOver: STATE ROUTE 99
10-STA-099-R7.81, Stanislaus, CA
Built 1985 ADT: 102,000
HAMMETT RD
UnknownOver: STATE ROUTE 99
10-STA-099-R24.27, Stanislaus, CA
Built 1970 ADT: 110,000
STATE ROUTE 99 SB
UnknownOver: WEST MAIN STREET
10-STA-099-R3.45-TUR, Stanislaus, CA
Built 1973 ADT: 13,500
STATE ROUTE 99 NB
UnknownOver: WEST MAIN STREET
10-STA-099-R3.45-TUR, Stanislaus, CA
Built 1973 ADT: 13,500
Showing 7,251-7,300 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.