Total Bridges
27,040
Public highway bridges in California
State profile · Below median Poor share
California bridge safety
Condition ratings, load ratings, and Poor-condition data for every public highway bridge in California, based on the FHWA National Bridge Inventory.
- 27,040
- Public bridges
- 32.5%
- Good condition
- 4.6%
- Poor condition
Data updated May 2026
Good Condition
32.5%
8,777 bridges rated 7-9
-17.5pp vs 50% benchmark
Poor Condition
4.6%
1,244 bridges whose lowest applicable component is rated 0-4
-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 - Poor-condition share 15.3%
National avg
Lower is better. Bar maxes at 30% (worst-state ceiling). National average sits at 7.0%.
Condition Distribution
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 by Poor-condition share (lower share = better)
States are ranked by the share of bridges whose lowest applicable component rating is 4 or below. This describes recorded condition; it does not measure funding effectiveness or live crossing safety. States here sit immediately above and below California on the same metric.
OH
Ohio
4.54% top marginal rate
NJ
New Jersey
4.59% top marginal rate
CA
California
4.60% top marginal rate
AR
Arkansas
4.71% top marginal rate
WA
Washington
4.81% top marginal rate
Bridges Needing Most Attention in California
Six lowest-condition bridges in California, ranked by the portal's composite display score. Inspection intervals are risk-based under current NBIS rules.
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
PoorOver: 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
INTERSTATE 880
UnknownOver: JACKSON, MADISON, OAK
04-ALA-880-31.07-OAK, Alameda, CA
Built 1957 ADT: 17,300
INTERSTATE 880
UnknownOver: RT260,MLK,MKT,BRDWY,WASH
04-ALA-880-31.36-OAK, Alameda, CA
Built 1953 ADT: 13,300
S238-E580 CONNECTR
UnknownOver: CASTRO VALLEY BLVD
04-ALA-238-R14.47, Alameda, CA
Built 1988 ADT: 5,000
INTERSTATE 580
UnknownOver: CASTRO VALLEY BLVD
04-ALA-580-R30.56, Alameda, CA
Built 1989 ADT: 2,000
SAN RAMON ROAD
UnknownOver: INTERSTATE 580
04-ALA-580-R21.43-PLE, Alameda, CA
Built 1977 ADT: 207,000
STATE ROUTE 238 SB
UnknownOver: SR 185 (14TH STREET)
04-ALA-238-14.93, Alameda, CA
Built 1994 ADT: 18,000
BAY ST
UnknownOver: STATE ROUTE 13
04-ALA-013-13.71-BER, Alameda, CA
Built 1954 ADT: 46,400
I 580 EB
UnknownOver: I 238 NB,CONNS,CASTRO VL
04-ALA-580-R30.59, Alameda, CA
Built 1988 ADT: 79,300
STATE ROUTE 238
UnknownOver: HESPERIAN BLVD
04-ALA-238-16.28, Alameda, CA
Built 1956 ADT: 9,300
STATE ROUTE 238
UnknownOver: HESPERIAN BLVD
04-ALA-238-16.28, Alameda, CA
Built 2010 ADT: 9,300
STATE ROUTE 238
UnknownOver: ASHLAND AVE
04-ALA-238-15.67, Alameda, CA
Built 1956 ADT: 3,500
MORAGA AVENUE WB
UnknownOver: S13-MORAGA AV OFF RAMP
04-ALA-013-8.32-OAK, Alameda, CA
Built 1964 ADT: 15,000
STATE ROUTE 13 SB
UnknownOver: MORAGA AVE
04-ALA-013-8.28-OAK, Alameda, CA
Built 1964 ADT: 10,000
STATE ROUTE 13 NB
UnknownOver: MORAGA AVE
04-ALA-013-8.27-OAK, Alameda, CA
Built 1964 ADT: 20,000
TENNYSON ROAD
UnknownOver: INTERSTATE 880
04-ALA-880-15.65-HAY, Alameda, CA
Built 1958 ADT: 211,000
FREMONT BOULEVARD
UnknownOver: INTERSTATE 880
04-ALA-880-3.25-FMT, Alameda, CA
Built 1995 ADT: 161,000
STATE ROUTE 84
UnknownOver: INTERSTATE 880
04-ALA-084-R5.98-FMT, Alameda, CA
Built 1984 ADT: 189,000
PEDESTRIAN WALKWAY
UnknownOver: STATE ROUTE 13
04-ALA-013-7.91-OAK, Alameda, CA
Built 1956 ADT: 114,000
INTERSTATE 880
UnknownOver: WHIPPLE ROAD
04-ALA-880-13.67-HAY, Alameda, CA
Built 1956 ADT: 45,196
S880-WHIPPLE RD OF
UnknownOver: WHIPPLE ROAD
04-ALA-880-13.67-HAY, Alameda, CA
Built 1993 ADT: 45,196
WHIPPLE RD-N880 ON
UnknownOver: WHIPPLE ROAD
04-ALA-880-13.67-HAY, Alameda, CA
Built 1993 ADT: 45,196
LINCOLN AVE
UnknownOver: STATE ROUTE 13
04-ALA-013-6.47-OAK, Alameda, CA
Built 1956 ADT: 102,000
CENTRAL AVE SB
UnknownOver: INTERSTATE 880
04-ALA-880-8.25-FMT, Alameda, CA
Built 1993 ADT: 197,000
CENTRAL AVE NB
UnknownOver: INTERSTATE 880
04-ALA-880-8.24-FMT, Alameda, CA
Built 1993 ADT: 197,000
UP RR, AMTRAK, ACE
UnknownOver: INTERSTATE 880
04-ALA-880-8.54-FMT, Alameda, CA
Built 1995 ADT: 187,000
SR 84 (THORNTON)
UnknownOver: INTERSTATE 880
04-ALA-084-6.93-FMT, Alameda, CA
Built 1997 ADT: 200,000
MOWRY AVENUE WB
UnknownOver: INTERSTATE 880
04-ALA-880-7.19-FMT, Alameda, CA
Built 1994 ADT: 187,000
MOWRY AVENUE EB
UnknownOver: INTERSTATE 880
04-ALA-880-7.18-FMT, Alameda, CA
Built 1994 ADT: 187,000
AUTO MALL PARKWAY
UnknownOver: INTERSTATE 880
04-ALA-880-4.71-FMT, Alameda, CA
Built 1994 ADT: 161,000
ROUTE 580 EB
UnknownOver: SAN PBLO, ADLN, MGNO,PER
04-ALA-580-45.74-OAK, Alameda, CA
Built 1961 ADT: 23,000
ROUTE 580 WB
UnknownOver: ADELINE, SAN PABLO,PERAL
04-ALA-580-45.74-OAK, Alameda, CA
Built 1961 ADT: 14,500
INTERSTATE 580 WB
UnknownOver: S580-N123 CONNECTOR RAMP
04-ALA-580-45.99-OAK, Alameda, CA
Built 1961 ADT: 6,700
BARTD
UnknownOver: STATE ROUTE 77
04-ALA-077-0.32-OAK, Alameda, CA
Built 1950 ADT: 21,500
SAN LEANDRO BLVD
UnknownOver: STATE ROUTE 77
04-ALA-077-0.29-OAK, Alameda, CA
Built 1950 ADT: 21,500
ROUTE 580
UnknownOver: PIEDMONT, BROADWAY, RICH
04-ALA-580-44.51-OAK, Alameda, CA
Built 1961 ADT: 24,025
PG&E PIPELINE
UnknownOver: INTERSTATE 880
04-ALA-880-8.52-FMT, Alameda, CA
Built 1958 ADT: 187,000
MACARTHUR BLVD
UnknownOver: INTERSTATE 580
04-ALA-580-44.32-OAK, Alameda, CA
Built 1961 ADT: 201,000
ROUTE 580
UnknownOver: INTERSTATE 580
04-ALA-580-44.28-OAK, Alameda, CA
Built 1961 ADT: 14,069
S580-OAKLAND AV OF
UnknownOver: HARRISON STREET
04-ALA-580-44.33-OAK, Alameda, CA
Built 1961 ADT: 20,595
HARRISON&OAKLAND-N
UnknownOver: HARRISON STREET
04-ALA-580-44.33-OAK, Alameda, CA
Built 1961 ADT: 20,595
CHETWOOD ST
UnknownOver: INTERSTATE 580
04-ALA-580-44.07-OAK, Alameda, CA
Built 1961 ADT: 211,000
FLORESTA BLVD
UnknownOver: INTERSTATE 880
04-ALA-880-21.56-SLN, Alameda, CA
Built 1993 ADT: 217,000
INTERSTATE 680
UnknownOver: SR 238 (MISSION BLVD)
04-ALA-680-R6.38-FMT, Alameda, CA
Built 1963 ADT: 27,000
ANDRADE ROAD
UnknownOver: INTERSTATE 680
04-ALA-680-R9.71, Alameda, CA
Built 1963 ADT: 141,000
INTERSTATE 580
UnknownOver: WEBSTER STREET
04-ALA-580-44.81-OAK, Alameda, CA
Built 1961 ADT: 18,300
E580-WEBSTER&BROAD
UnknownOver: WEBSTER STREET
04-ALA-580-44.81-OAK, Alameda, CA
Built 1961 ADT: 18,300
INTERSTATE 580
UnknownOver: TELEGRAPH AVE
04-ALA-580-45.03-OAK, Alameda, CA
Built 1961 ADT: 23,728
INTERSTATE 580
UnknownOver: ST RTE 24-I 980
04-ALA-580-45.15-OAK, Alameda, CA
Built 1961 ADT: 152,300
ROUTE 580
UnknownOver: MARTIN LUTHER KING JR WY
04-ALA-580-45.25-OAK, Alameda, CA
Built 1961 ADT: 36,028
WEST ST-S580 ON RA
UnknownOver: MARTIN LUTHER KING JR WY
04-ALA-580-45.25-OAK, Alameda, CA
Built 1961 ADT: 36,028
Showing 51-100 of 27,040 bridges
Related
Data sourced from the FHWA National Bridge Inventory (NBI), latest released cycle. See our methodology for details. Retrieved and formatted by PlainBridges.
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). Poor condition is an inspection-record category, not a closure or unsafe-to-cross designation. Consult the bridge owner for current status.
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.
Every figure on PlainBridge is rendered directly from federal source data, no number is typed in by an editor. This page draws directly on federal source data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.