State profile · Below median Poor share

California bridge safety

According to the Federal Highway Administration's 2024 National Bridge Inventory, condition ratings, load ratings, and Poor-condition shares for every public highway bridge in California.

25,848
Public bridges
45.6%
Good condition
5.9%
Poor condition

California holds 25,848 public highway bridges (#4 of 52 by inventory) with a 5.91% Poor share (#28 of 52 by Poor share).

That is 5.9% of the state's inventory, against an average of 7.5% across the 54 states and territories with Poor-rated bridges on file, which places it 25 of 54 ordered from the lowest Poor share upward. A bridge is rated Poor when its weakest applicable component scores 4 or below on the inspecting agency's 0-9 scale, so the category is a maintenance and funding signal rather than a closure order or a live crossing-safety verdict.

Inventory: FHWA NBI 2024 · last ETL August 2026

Total Bridges

25,848

Public highway bridges in California

Good Condition

45.6%

11,798 bridges rated 7-9

-4.4pp vs 50% benchmark

Poor Condition

5.9%

1,527 bridges whose lowest applicable component is rated 0-4

-1.6pp vs national avg 7.5%

California vs national bridge condition

California - Good condition share 45.6%
National avg

Share of bridges rated 7-9 on the FHWA 0-9 scale (deck, superstructure, substructure all good).

California - Poor-condition share 19.7%
National avg

Lower is better. Bar maxes at 30% (worst-state ceiling). National average sits at 7.5%.

California in the national condition pattern

Each point is a state or territory in the FHWA NBI; the highlighted point is this profile.

Inventory size and Poor-condition share are different measures: California has 25,848 bridges and a 5.9% Poor-condition share in the 2024 NBI, rank #25 of 54 jurisdictions ordered from the lowest share upward. The dashed comparisons mark the national average state rate and the midpoint of the plotted inventory range; neither is a live safety or closure threshold. Scatter plot of 54 data points. 0%10%20%30%40% 0k20k40k60k Public bridges in inventory (thousands) Poor-condition share (%) CA, Public bridges in inventory (thousands): 25.8k · Poor-condition share (%): 5.91%AL, Public bridges in inventory (thousands): 16.2k · Poor-condition share (%): 3.35%AK, Public bridges in inventory (thousands): 1.7k · Poor-condition share (%): 7.89%AZ, Public bridges in inventory (thousands): 8.6k · Poor-condition share (%): 1.15%AR, Public bridges in inventory (thousands): 13k · Poor-condition share (%): 5.43%CO, Public bridges in inventory (thousands): 9k · Poor-condition share (%): 4.82%CT, Public bridges in inventory (thousands): 4.4k · Poor-condition share (%): 4.72%DE, Public bridges in inventory (thousands): 0.9k · Poor-condition share (%): 1.26%DC, Public bridges in inventory (thousands): 0.3k · Poor-condition share (%): 1.95%FL, Public bridges in inventory (thousands): 13k · Poor-condition share (%): 2.79%GA, Public bridges in inventory (thousands): 15.1k · Poor-condition share (%): 1.59%GU, Public bridges in inventory (thousands): 0k · Poor-condition share (%): 12.77%HI, Public bridges in inventory (thousands): 1.2k · Poor-condition share (%): 6.53%ID, Public bridges in inventory (thousands): 4.6k · Poor-condition share (%): 4.9%IL, Public bridges in inventory (thousands): 26.9k · Poor-condition share (%): 9.35%IN, Public bridges in inventory (thousands): 19.5k · Poor-condition share (%): 5.22%IA, Public bridges in inventory (thousands): 23.7k · Poor-condition share (%): 19.16%KS, Public bridges in inventory (thousands): 24.9k · Poor-condition share (%): 5.26%KY, Public bridges in inventory (thousands): 14.5k · Poor-condition share (%): 7.37%LA, Public bridges in inventory (thousands): 12.7k · Poor-condition share (%): 11.48%ME, Public bridges in inventory (thousands): 2.5k · Poor-condition share (%): 15.41%MD, Public bridges in inventory (thousands): 5.5k · Poor-condition share (%): 4.56%MA, Public bridges in inventory (thousands): 5.3k · Poor-condition share (%): 8.88%MI, Public bridges in inventory (thousands): 11.4k · Poor-condition share (%): 11.27%MN, Public bridges in inventory (thousands): 13.5k · Poor-condition share (%): 4.44%MS, Public bridges in inventory (thousands): 16.7k · Poor-condition share (%): 6.03%MO, Public bridges in inventory (thousands): 24.6k · Poor-condition share (%): 8.95%MT, Public bridges in inventory (thousands): 5.2k · Poor-condition share (%): 6.81%NE, Public bridges in inventory (thousands): 15.4k · Poor-condition share (%): 7.9%NV, Public bridges in inventory (thousands): 2.1k · Poor-condition share (%): 1.14%NH, Public bridges in inventory (thousands): 2.5k · Poor-condition share (%): 7.51%NJ, Public bridges in inventory (thousands): 6.8k · Poor-condition share (%): 6.01%NM, Public bridges in inventory (thousands): 4k · Poor-condition share (%): 4.51%NY, Public bridges in inventory (thousands): 17.6k · Poor-condition share (%): 9.43%NC, Public bridges in inventory (thousands): 19.2k · Poor-condition share (%): 6.76%ND, Public bridges in inventory (thousands): 4.3k · Poor-condition share (%): 10.98%OH, Public bridges in inventory (thousands): 26.7k · Poor-condition share (%): 4.74%OK, Public bridges in inventory (thousands): 22.9k · Poor-condition share (%): 7.7%OR, Public bridges in inventory (thousands): 8.3k · Poor-condition share (%): 4.61%PA, Public bridges in inventory (thousands): 23.3k · Poor-condition share (%): 12.58%PR, Public bridges in inventory (thousands): 2.4k · Poor-condition share (%): 13.92%RI, Public bridges in inventory (thousands): 0.8k · Poor-condition share (%): 15.2%SC, Public bridges in inventory (thousands): 9.5k · Poor-condition share (%): 6.17%SD, Public bridges in inventory (thousands): 5.9k · Poor-condition share (%): 16.36%TN, Public bridges in inventory (thousands): 20.4k · Poor-condition share (%): 4.41%TX, Public bridges in inventory (thousands): 56.7k · Poor-condition share (%): 1.23%UT, Public bridges in inventory (thousands): 3.1k · Poor-condition share (%): 2.91%VT, Public bridges in inventory (thousands): 2.9k · Poor-condition share (%): 2.9%VI, Public bridges in inventory (thousands): 0k · Poor-condition share (%): 29.17%VA, Public bridges in inventory (thousands): 14.1k · Poor-condition share (%): 3.39%WA, Public bridges in inventory (thousands): 8.5k · Poor-condition share (%): 5.45%WV, Public bridges in inventory (thousands): 7.3k · Poor-condition share (%): 18.64%WI, Public bridges in inventory (thousands): 14.4k · Poor-condition share (%): 6.52%WY, Public bridges in inventory (thousands): 3.1k · Poor-condition share (%): 6.51%
Inventory size and Poor-condition share are different measures: California has 25,848 bridges and a 5.9% Poor-condition share in the 2024 NBI, rank #25 of 54 jurisdictions ordered from the lowest share upward. The dashed comparisons mark the national average state rate and the midpoint of the plotted inventory range; neither is a live safety or closure threshold.

California vs all states by public bridge inventory

Where this state's FHWA NBI public-highway bridge count sits among every state and territory on PlainBridges

25,848 4th of 54 higher than 50 of 54 states

States and territories, banded by public bridge inventory size

Each bar is a band; taller bars hold more states. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.

Source FHWA National Bridge Inventory · 2024

Read the rank neighborhood for California

The highlighted point is California: 25,848 bridges and 5.91% in Poor condition, rank #25 of 54 jurisdictions ordered from the lowest share upward. The five jurisdictions immediately above and below California on that same Poor-share ordering:

  • Arkansas: 12,974 bridges · 5.43% Poor
  • Washington: 8,474 bridges · 5.45% Poor
  • California: 25,848 bridges · 5.91% Poor
  • New Jersey: 6,827 bridges · 6.01% Poor
  • Mississippi: 16,739 bridges · 6.03% Poor

The full national sortable table lives on the rankings page.

Material families in California

Exclusive FHWA material families across all 25,848 bridges in this state; continuous variants fold into the parent family. Orthogonal to the Poor-share scatter above.

Who maintains California’s inventory

State agency holds 48.8% of the 25,848 public highway bridges filed under California in the 2024 NBI, the agency-of-record split for this state, not a condition verdict.

When California’s bridges were built

Pre-1950 construction accounts for 15.5% of the 25,848 bridges with a recorded original year in California. Era bands are orthogonal to the Poor-share ranking above.

Condition Distribution

California45.6%48.4%GoodFairPoor
Bridge inventory deck-condition mix - California (FHWA NBI)

Counties (58)

Alameda 658 Alpine 32 Amador 61 Butte 437 Calaveras 105 Colusa 211 Contra Costa 618 Del Norte 96 El Dorado 192 Fresno 916 Glenn 242 Humboldt 396 Imperial 444 Inyo 66 Kern 668 Kings 168 Lake 129 Lassen 108 Los Angeles 3547 Madera 247 Marin 207 Mariposa 109 Mendocino 357 Merced 528 Modoc 87 Mono 49 Monterey 377 Napa 158 Nevada 135 Orange 1164 Placer 337 Plumas 165 Riverside 1117 Sacramento 740 San Benito 76 San Bernardino 1422 San Diego 1632 San Francisco 143 San Joaquin 644 San Luis Obispo 401 San Mateo 361 Santa Barbara 418 Santa Clara 964 Santa Cruz 192 Shasta 492 Sierra 65 Siskiyou 421 Solano 373 Sonoma 609 Stanislaus 386 Sutter 121 Tehama 450 Trinity 194 Tulare 589 Tuolumne 125 Ventura 501 Yolo 271 Yuba 127

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.

AR

Arkansas

5.43% top marginal rate
Structure
Progressive
Burden @ $100K
$12,974

WA

Washington

5.45% top marginal rate
Structure
Progressive
Burden @ $100K
$8,474
Selected

CA

California

5.91% top marginal rate
Structure
Progressive
Burden @ $100K
$25,848

NJ

New Jersey

6.01% top marginal rate
Structure
Progressive
Burden @ $100K
$6,827

MS

Mississippi

6.03% top marginal rate
Structure
Progressive
Burden @ $100K
$16,739

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.

OLD COTTONWOOD CR

Poor

Over: COTTONWOOD CREEK

0.2 MI E/O COTTONWOOD CK, Siskiyou, CA

Built 1957 Load: 0.0 t ADT: 10

STATE ROUTE 211

Poor

Over: EEL RIVER

01-HUM-211-78.10, Humboldt, CA

Built 1911 Load: 0.0 t ADT: 5,300

CR 305 (MAPES RD)

Poor

Over: HARTSON SLOUGH

0.4 MI E/O RD 303, Lassen, CA

Built 1978 Load: 0.0 t ADT: 100

CR 111 (PITTVILLE)

Poor

Over: BEAVER CREEK

1.0 MI S OF CR 404, Lassen, CA

Built 1975 Load: 0.0 t ADT: 100

RD 424 (BASSETT)

Poor

Over: WILLOW CREEK

1.5 MI N OF RD A-2, Lassen, CA

Built 1960 Load: 0.0 t ADT: 120

CR417 (PUNKIN CTR)

Poor

Over: MUDDY SLOUGH NO 1

2.8 MI S OF CR A2, Lassen, CA

Built 1955 Load: 0.0 t ADT: 200

All Bridges in California

POPLAR ST

Fair

Over: SAN TIMOTEO CREEK

0.3 MI S OF REDLANDS BLVD, San Bernardino, CA

Built 1980 Load: 22.0 t ADT: 1,126

RAILROAD AVENUE

Fair

Over: EAST CHANNEL STUBBE WASH

0.2 MI. W/O VERBENIA AVE., Riverside, CA

Built 1934 Load: 22.0 t ADT: 240

INTERSTATE 15 SB

Fair

Over: ROUTE 8

11-SD-015-R6.10-SD, San Diego, CA

Built 1960 Load: 22.0 t ADT: 100,000

GARNET AVE

Fair

Over: ROSE CANYON CREEK

0.2 MI W/O MISSION BAY DR, San Diego, CA

Built 1939 Load: 22.0 t ADT: 58,500

RIVERSIDE DR

Fair

Over: SWEETWATER RIVER

0.3 MI N/O SR 79, San Diego, CA

Built 1947 Load: 22.0 t ADT: 2,500

KEYSTONE RD

Fair

Over: WESTSIDE MAIN CANAL

0.3 MI W/O FORRESTER RD, Imperial, CA

Built 1950 Load: 22.0 t ADT: 25

WIEMAN RD

Fair

Over: WESTSIDE MAIN CANAL

2.3 MI S/O SR86 (HOSKINS), Imperial, CA

Built 1940 Load: 22.0 t ADT: 300

ANDRE RD

Fair

Over: WESTSIDE MAIN CANAL

0.6 MI W/O PELLETT RD, Imperial, CA

Built 1940 Load: 22.0 t ADT: 50

LARSEN ROAD

Fair

Over: CENTRAL MAIN CANAL

30 FT E/O AUSTIN RD, Imperial, CA

Built 1950 Load: 22.0 t ADT: 570

HARRIS ROAD

Fair

Over: CENTRAL MAIN CANAL

30 FT E/O AUSTIN RD, Imperial, CA

Built 1950 Load: 22.0 t ADT: 120

ROHNERVILLE ROAD

Fair

Over: STRONGS CREEK

0.3 MI W OF NEWBURG RD, Humboldt, CA

Built 1915 Load: 22.4 t ADT: 4,924

STATE ROUTE 3

Fair

Over: STUART FORK

02-TRI-003-43.93, Trinity, CA

Built 1960 Load: 22.4 t ADT: 865

13 DIPS ROAD

Fair

Over: SALT CREEK

1.2 MI EAST OF S.R. 3, Trinity, CA

Built 1951 Load: 22.4 t ADT: 50

SODA CREEK ROAD

Fair

Over: SODA CREEK

0.3 MI SE I-5, Shasta, CA

Built 1970 Load: 22.4 t ADT: 180

RD 315

Fair

Over: SUSAN RIVER

0.6 MI S OF CR 215, Lassen, CA

Built 1987 Load: 22.4 t ADT: 100

RD 303 (GALEPPI)

Fair

Over: HARTSON SLOUGH

0.5 MI N/O RD 305, Lassen, CA

Built 1978 Load: 22.4 t ADT: 100

KANSAS AVENUE

Fair

Over: LONG GULCH

1.05 MI EAST OF SR 99, Tehama, CA

Built 1957 Load: 22.4 t ADT: 132

ROAD 64

Fair

Over: COLUSA DRAIN

0.6 MI W RD WW, Glenn, CA

Built 1941 Load: 22.4 t ADT: 44

MINERS RANCH RD

Fair

Over: HONCUT CREEK

0.8 MI N/O BANGOR HWY, Butte, CA

Built 1954 Load: 22.4 t ADT: 2,072

NORMAN ROAD

Fair

Over: WILLOW CREEK

0.2 MI W YOUNGS RD, Colusa, CA

Built 1973 Load: 22.4 t ADT: 282

MACARTHUR STREET

Fair

Over: NATHANSON CREEK

AUSTIN AVE, Sonoma, CA

Built 1965 Load: 22.4 t ADT: 2,000

COUNTY ROAD 102

Fair

Over: CACHE CREEK

3.5 MI N OF I-5, Yolo, CA

Built 1955 Load: 22.4 t ADT: 6,200

TAVERNOR RD

Fair

Over: PASTURE CREEK

0.9 MI S DILLARD RD, Sacramento, CA

Built 1981 Load: 22.4 t ADT: 1,163

UPPER TRUCKEE RD

Fair

Over: ECHO CREEK

0.2 MI S OF U.S. 50, El Dorado, CA

Built 1951 Load: 22.4 t ADT: 2,390

BEAR CREEK RD

Fair

Over: BEAR CREEK

0.9 MI SE/O TRAVERS CR RD, El Dorado, CA

Built 1958 Load: 22.4 t ADT: 300

MUIR WOODS RD

Fair

Over: REDWOOD CREEK

2.0 MI N OF SR 1, Marin, CA

Built 1946 Load: 22.4 t ADT: 2,090

INTERSTATE 580 EB

Fair

Over: CORRAL HOLLOW CREEK

10-SJ-580-7.88, San Joaquin, CA

Built 1966 Load: 22.4 t ADT: 16,000

INTERSTATE 5 SB

Fair

Over: DOWNING AVENUE

10-SJ-005-R23.66, San Joaquin, CA

Built 1971 Load: 22.4 t ADT: 43,750

GRAHAM HILL RD

Fair

Over: BEAN CREEK

@ EAST ZAYANTE ROAD, Santa Cruz, CA

Built 1936 Load: 22.4 t ADT: 14,270

YUBA DRIVE

Fair

Over: STEVENS CREEK

BTWN SR 85 & SR 82, Santa Clara, CA

Built 1924 Load: 22.4 t ADT: 500

ARQUES AVE

Fair

Over: CALABAZAS CREEK

0.5 MI E LAWRENCE EXPWY, Santa Clara, CA

Built 1976 Load: 22.4 t ADT: 14,200

GOLDEN STATE BLVD

Fair

Over: UP RR GOLDEN STATE

0.1 MI N MERCED CO LINE, Stanislaus, CA

Built 1938 Load: 22.4 t ADT: 10,000

COOPERSTOWN ROAD

Fair

Over: DRY CREEK TRIBUTARY

6.5 MI NW JCT GRANGE RD, Stanislaus, CA

Built 1920 Load: 22.4 t ADT: 35

OLIVE AVE

Fair

Over: STATE ROUTE 99

06-FRE-099-23.30-FRE, Fresno, CA

Built 1955 Load: 22.4 t ADT: 24,000

E JENSEN AVE WB

Fair

Over: FOWLER SWITCH CANAL

0.3 MI W OF BETHEL AVE, Fresno, CA

Built 1962 Load: 22.4 t ADT: 13,400

E LEWISTON AVE

Fair

Over: GRANT CANAL (E DITCH)

0.01 MI WEST OF MAPLE AVE, Fresno, CA

Built 1946 Load: 22.4 t ADT: 200

N GOLDENROD AVE

Fair

Over: HERNDON CANAL

AT SHAW AVE, Fresno, CA

Built 1938 Load: 22.4 t ADT: 110

W HERNDON AVE

Fair

Over: 2ND LIFT CANAL

1.5 MI EAST OF JERROLD AV, Fresno, CA

Built 1965 Load: 22.4 t ADT: 125

CARMEL VALLEY RD

Fair

Over: PALOMA CREEK

4 MI N ARROYO SECO RD, Monterey, CA

Built 1959 Load: 22.4 t ADT: 290

STATE ROUTE 99 SB

Fair

Over: N BRANCH TULE RIVER

06-TUL-099-22.74, Tulare, CA

Built 1931 Load: 22.4 t ADT: 21,500

ROAD 152

Fair

Over: S BRANCH TULE RIVER

0.7 MI N/O AVE 168, Tulare, CA

Built 1943 Load: 22.4 t ADT: 980

ROAD 148

Fair

Over: TULARE IRRIG DIST CANAL

0.8 MI S OF AVE 280, Tulare, CA

Built 1947 Load: 22.4 t ADT: 75

US HIGHWAY 101 NB

Fair

Over: NOJOQUI CREEK

05-SB-101-55.66, Santa Barbara, CA

Built 1938 Load: 22.4 t ADT: 11,000

PUEBLO ST

Fair

Over: MISSION CREEK

0.1 MI W OAK PARK LANE, Santa Barbara, CA

Built 1958 Load: 22.4 t ADT: 4,170

CARPENTERIA ST

Fair

Over: SYCAMORE CREEK

BTWN SOLEDAD & CANADA ST, Santa Barbara, CA

Built 1925 Load: 22.4 t ADT: 4,700

INTERSTATE 210

Fair

Over: HAMPTON RD & FOOTHILL BL

07-LA-210-R20.85-LCF, Los Angeles, CA

Built 1972 Load: 22.4 t ADT: 113,000

214TH ST

Fair

Over: ARTESIA-NORWALK STORM DN

0.1MI W/O NORWALK BLVD, Los Angeles, CA

Built 1956 Load: 22.4 t ADT: 2,828

INTERSTATE 215 SB

Fair

Over: INTERSTATE 10

08-SBD-215-4.03-COL, San Bernardino, CA

Built 1972 Load: 22.4 t ADT: 85,000

WASHINGTON AVENUE

Fair

Over: INTERSTATE 215 & RAMPS

08-SBD-215-2.69-COL, San Bernardino, CA

Built 1959 Load: 22.4 t ADT: 25,000

US HIGHWAY 95

Fair

Over: INTERSTATE 40

08-SBD-095-R57.22, San Bernardino, CA

Built 1971 Load: 22.4 t ADT: 6,600

Showing 2,151-2,200 of 25,848 bridges

Related

All states → | National rankings → | Understanding conditions → | Retired SD term explained →
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.

What to do with this

Use California's inventory picture to drill to a county or a specific span.

  • Browse counties in California and open the highest-Poor shares first. County list
  • See where this state sits among peers on Poor-condition share. State rankings
  • Compare this state with another jurisdiction on the same measures. State compare

NBI condition ratings are inventory snapshots, not live crossing-safety verdicts.

Every figure on PlainBridges is rendered directly from federal source data, no number is typed in by an editor. California Good/Fair/Poor shares and county rollups on this page are computed from the same NBI extract as the national boards; no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of 2024 NBI release. NBI condition categories reflect the latest reported inventory record, not a live safety, closure, or travel decision.