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
STATE ROUTE 99 SB
UnknownOver: O STREET
10-MER-099-15.15-MER, Merced, CA
Built 1962 ADT: 1,500
STATE ROUTE 99 NB
UnknownOver: O STREET
10-MER-099-15.15-MER, Merced, CA
Built 1962 ADT: 1,500
STATE ROUTE 99 SB
UnknownOver: ROUTE 59
10-MER-099-14.67-MER, Merced, CA
Built 1962 ADT: 12,950
STATE ROUTE 99 NB
UnknownOver: ROUTE 59
10-MER-099-14.67-MER, Merced, CA
Built 1962 ADT: 12,950
STATE ROUTE 99 SB
UnknownOver: R STREET
10-MER-099-15.42-MER, Merced, CA
Built 1962 ADT: 100
STATE ROUTE 99 NB
UnknownOver: R STREET
10-MER-099-15.42-MER, Merced, CA
Built 1962 ADT: 1,000
STATE ROUTE 99 SB
UnknownOver: STATE ROUTE 140
10-MER-099-15.78-MER, Merced, CA
Built 1962 ADT: 15,000
STATE ROUTE 99 NB
UnknownOver: STATE ROUTE 140
10-MER-099-15.78-MER, Merced, CA
Built 1962 ADT: 15,000
STATE ROUTE 99 NB
UnknownOver: 15TH STREET
10-MER-099-14.22-MER, Merced, CA
Built 1962 ADT: 1,000
STATE ROUTE 99 SB
UnknownOver: STATE ROUTE 140
10-MER-099-13.86-MER, Merced, CA
Built 1962 ADT: 15,000
STATE ROUTE 99 NB
UnknownOver: STATE ROUTE 140
10-MER-099-13.86-MER, Merced, CA
Built 1962 ADT: 15,000
N99-WB 16TH ST OFF
UnknownOver: W140-N99 ON-RAMP
10-MER-099-13.90-MER, Merced, CA
Built 1962 ADT: 4,250
STATE ROUTE 99 SB
UnknownOver: G STREET
10-MER-099-14.42-MER, Merced, CA
Built 1962 ADT: 1,000
STATE ROUTE 99 NB
UnknownOver: G STREET
10-MER-099-14.42-MER, Merced, CA
Built 1962 ADT: 1,000
CHILDS AVE
UnknownOver: STATE ROUTE 99
10-MER-099-13.09-MER, Merced, CA
Built 1964 ADT: 42,000
SOUTH AVE
UnknownOver: STATE ROUTE 99
10-MER-099-M33.53, Merced, CA
Built 2000 ADT: 75,000
BRADBURY ROAD
UnknownOver: STATE ROUTE 99
10-MER-099-R35.56, Merced, CA
Built 2000 ADT: 75,000
STATE ROUTE 165
UnknownOver: INTERSTATE 5
10-MER-165-L0.01, Merced, CA
Built 1971 ADT: 31,000
ARBURUA RD
UnknownOver: INTERSTATE 5
10-MER-005-9.68, Merced, CA
Built 1971 ADT: 31,000
CANYON ROAD
UnknownOver: ROUTE 5
10-MER-005-11.99, Merced, CA
Built 1971 ADT: 41,500
INTERSTATE 5 SB
UnknownOver: SR 152
10-MER-005-17.55, Merced, CA
Built 1966 ADT: 24,850
INTERSTATE 5 NB
UnknownOver: SR 152
10-MER-005-17.55, Merced, CA
Built 1966 ADT: 24,850
HENRY MILLER AVE
UnknownOver: INTERSTATE 5
10-MER-005-21.38, Merced, CA
Built 1966 ADT: 31,000
STATE ROUTE 33
UnknownOver: INTERSTATE 5 & RAMP
10-MER-033-R16.60, Merced, CA
Built 1966 ADT: 7,750
MCCABE RD
UnknownOver: ROUTE 5
10-MER-005-22.57, Merced, CA
Built 1966 ADT: 43,000
WHITWORTH ROAD
UnknownOver: ROUTE 5
10-MER-005-23.84, Merced, CA
Built 1966 ADT: 31,000
BUTTS RD
UnknownOver: ROUTE 5
10-MER-005-25.97, Merced, CA
Built 1967 ADT: 43,000
COTTONWOOD RD
UnknownOver: INTERSTATE 5
10-MER-005-28.23, Merced, CA
Built 1967 ADT: 35,000
TAGLIO RD
UnknownOver: INTERSTATE 5
10-MER-005-30.34, Merced, CA
Built 1967 ADT: 43,000
STATE ROUTE 140
UnknownOver: INTERSTATE 5
10-MER-140-0.01, Merced, CA
Built 1967 ADT: 35,000
STATE ROUTE 152 WB
UnknownOver: STATE ROUTE 33
10-MER-152-R32.35, Merced, CA
Built 1969 ADT: 5,200
STATE ROUTE 152 EB
UnknownOver: STATE ROUTE 33
10-MER-152-R32.35, Merced, CA
Built 1969 ADT: 5,200
GOLDEN STATE-S99
UnknownOver: STATE ROUTE 99
10-MER-099-R36.34, Merced, CA
Built 1973 ADT: 47,000
GRIFFITH ROAD
UnknownOver: STATE ROUTE 99
10-MER-099-R36.70, Merced, CA
Built 1973 ADT: 62,000
SHANKS ROAD
UnknownOver: STATE ROUTE 99
10-MER-099-R34.43, Merced, CA
Built 1980 ADT: 75,000
PEDESTRIAN WALKWAY
UnknownOver: STATE ROUTE 152
10-MER-152-20.60-LBNS, Merced, CA
Built 1974 ADT: 28,000
SULTANA DRIVE
UnknownOver: STATE ROUTE 99
10-MER-099-27.10, Merced, CA
Built 2007 ADT: 52,000
HAMMATT AVE
UnknownOver: STATE ROUTE 99
10-MER-099-R29.00-LVTN, Merced, CA
Built 1997 ADT: 52,000
CRESSEY STREET
UnknownOver: STATE ROUTE 99
10-MER-099-R29.56-LVTN, Merced, CA
Built 1997 ADT: 52,000
UP RR
UnknownOver: STATE ROUTE 99
10-MER-099-R29.85-LVTN, Merced, CA
Built 1993 ADT: 52,000
WINTON PARKWAY
UnknownOver: STATE ROUTE 99
10-MER-099-R30.38-LVTN, Merced, CA
Built 1997 ADT: 52,000
STATE ROUTE 152 WB
UnknownOver: STATE ROUTE 33
10-MER-152-11.27, Merced, CA
Built 1997 ADT: 8,200
STATE ROUTE 152 EB
UnknownOver: STATE ROUTE 33
10-MER-152-11.27, Merced, CA
Built 1997 ADT: 8,200
MISSION AVENUE
UnknownOver: STATE ROUTE 99
10-MER-099-11.59, Merced, CA
Built 2007 ADT: 39,000
STATE ROUTE 99
UnknownOver: WEST 16TH ST, UP RR
10-MER-099-16.60-MER, Merced, CA
Built 2013 ADT: 5,000
WESTSIDE BLVD
UnknownOver: STATE ROUTE 99
10-MER-099-25.10, Merced, CA
Built 2008 ADT: 104,000
LE GRAND ROAD
UnknownOver: STATE ROUTE 99
10-MER-099-6.89, Merced, CA
Built 2015 ADT: 39,000
PLAINSBURG ROAD
UnknownOver: STATE ROUTE 99
10-MER-099-3.36, Merced, CA
Built 2015 ADT: 39,000
STATE ROUTE 99
UnknownOver: UPRR & 16TH STREET
10-MER-099-14.10-MER, Merced, CA
Built 2015 ADT: 1,033
ATWATER MERCED EXP
UnknownOver: STATE ROUTE 99
10-MER-099-20.05, Merced, CA
Built 2015 ADT: 56,000
Showing 3,301-3,350 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.
| Publisher | Kiznis Studio |
| Sources | FHWA National Bridge Inventory, public U.S. government datasets |