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

MOFFETT BLVD

Fair

Over: STEVENS CREEK

NEAR HWY 85, Santa Clara, CA

Built 1964 Load: 24.3 t ADT: 2,500

BENTON ST

Fair

Over: CALABAZAS CREEK

0.1 MI E LAWRENCE EXPRESS, Santa Clara, CA

Built 1960 Load: 24.3 t ADT: 9,750

CABRILLO AVE

Fair

Over: CALABAZAS CREEK

AT CALABAZAS BLVD, Santa Clara, CA

Built 1960 Load: 24.3 t ADT: 4,500

MONROE ST

Fair

Over: CALABAZAS CREEK

NEAR CALABAZAS BLVD, Santa Clara, CA

Built 1960 Load: 24.3 t ADT: 10,976

MCCOY AVE

Fair

Over: SAN TOMAS AQUINO CREEK

NEAR HARRIET AVE, Santa Clara, CA

Built 1970 Load: 24.3 t ADT: 5,009

TWIN CREEKS RD

Fair

Over: SAN TOMAS CREEK

NEAR QUITO RD, Santa Clara, CA

Built 1965 Load: 24.3 t ADT: 600

OCONNOR DR

Fair

Over: FOREST AVE

FORREST AVE, Santa Clara, CA

Built 1960 Load: 24.3 t ADT: 1,500

PADERO AVE

Fair

Over: CALABAZAS CREEK

NEAR PIERCE RD, Santa Clara, CA

Built 1975 Load: 24.3 t ADT: 169

CALABAZAS BLVD

Fair

Over: CALABAZAS CREEK

0.2 MI S MONROE ST, Santa Clara, CA

Built 1961 Load: 24.3 t ADT: 2,500

CENTRAL EXPRESSWAY

Fair

Over: CALABAZAS CREEK

0.5 MI E LAWRENCE EXPWY, Santa Clara, CA

Built 1968 Load: 24.3 t ADT: 1,750

LAWRENCE EXPWAY

Fair

Over: CALABAZAS CREEK

0.1 MI S BENTON ST, Santa Clara, CA

Built 1965 Load: 24.3 t ADT: 74,520

NIGHTINGALE AVE

Fair

Over: CANOAS CREEK

50 M S IRONWOOD DR, Santa Clara, CA

Built 1965 Load: 24.3 t ADT: 2,000

NARVAEZ AVE

Fair

Over: CANOAS CREEK

S/O AVENUE 10, Santa Clara, CA

Built 1971 Load: 24.3 t ADT: 250

CHERRY AVENUE

Fair

Over: ROSS CREEK

300 M N/O BRANHAM LANE, Santa Clara, CA

Built 1966 Load: 24.3 t ADT: 5,950

HOMESTEAD ROAD

Fair

Over: CALABAZAS CREEK

1000 FT W OF LAWRENCE EX, Santa Clara, CA

Built 1958 Load: 24.3 t ADT: 20,000

GREAT MALL PARKWAY

Fair

Over: PENETENCIA CREEK

SE OF ELMWOOD CORCTNL, Santa Clara, CA

Built 1965 Load: 24.3 t ADT: 9,500

CHURCH AVE

Fair

Over: LITTLE LLAGAS CREEK

0.3 MI E OF SH 101, Santa Clara, CA

Built 1972 Load: 24.3 t ADT: 1,290

FORTINI ROAD

Fair

Over: ARROYO CALERO

0.25 MI E MCKEAN RD, Santa Clara, CA

Built 1956 Load: 24.3 t ADT: 350

CORNING AVE

Fair

Over: PENITENCIA CREEK

AT ABEL ST, Santa Clara, CA

Built 1965 Load: 24.3 t ADT: 1,174

MARYLINN DR

Fair

Over: PENITENCIA CREEK

NEAR ABBOTT AVE, Santa Clara, CA

Built 1960 Load: 24.3 t ADT: 4,197

SYCAMORE AVENUE

Fair

Over: COYOTE CREEK

JNO MALAGUERRA AVENUE, Santa Clara, CA

Built 1977 Load: 24.3 t ADT: 500

VALLCO PARKWAY

Fair

Over: CALABAZAS CREEK

AT STEVENS CREEK BLVD, Santa Clara, CA

Built 1978 Load: 24.3 t ADT: 10,420

DEL PUERTO CYN RD

Fair

Over: DEL PUERTO CREEK

6.3 MI W INTERSTATE RTE 5, Stanislaus, CA

Built 1959 Load: 24.3 t ADT: 250

BRIGGSMORE AVE WB

Fair

Over: M.I.D. LATERAL #3

0.2 MI W/O OAKDALE RD, Stanislaus, CA

Built 1969 Load: 24.3 t ADT: 38,223

SUNRISE AVENUE

Fair

Over: M.I.D. LATERAL #4

0.5 MI N/O LUCERNE AVENUE, Stanislaus, CA

Built 1967 Load: 24.3 t ADT: 7,493

WELLSFORD ROAD

Fair

Over: M.I.D. MAIN CANAL

0.4 MI N PARKER ROAD, Stanislaus, CA

Built 1928 Load: 24.3 t ADT: 1,750

PETE MILLER ROAD

Fair

Over: CALIFORNIA AQUEDUCT

2.6 MI WEST OF EASTIN RD, Stanislaus, CA

Built 1966 Load: 24.3 t ADT: 106

ALDRICH ROAD

Fair

Over: T.I.D. CERES MAIN CANAL

0.8 MI N/O FOX ROAD, Stanislaus, CA

Built 1967 Load: 24.3 t ADT: 250

STATE ROUTE 33

Fair

Over: OUTSIDE CANAL

10-MER-033-18.41, Merced, CA

Built 1936 Load: 24.3 t ADT: 7,475

STATE ROUTE 140

Fair

Over: EL CAPITAN CANAL

10-MER-140-34.51, Merced, CA

Built 1920 Load: 24.3 t ADT: 6,500

STATE ROUTE 99 NB

Fair

Over: STATE ROUTE 140

10-MER-099-13.86-MER, Merced, CA

Built 1962 Load: 24.3 t ADT: 21,000

AZUSA ROAD

Fair

Over: SAN JUAN CANAL

0.5 MI E OF SR 33, Merced, CA

Built 1922 Load: 24.3 t ADT: 500

SNELLING ROAD

Fair

Over: SOUTH FORK CANAL CREEK

3.3 MI S/O SR 59, Merced, CA

Built 1966 Load: 24.3 t ADT: 1,500

HORNITOS ROAD

Fair

Over: F. P. CREEK

2.3 MI SE MERCED FALLS RD, Merced, CA

Built 1971 Load: 24.3 t ADT: 300

INGOMAR GRADE ROAD

Fair

Over: SAN LUIS WASTEWAY

0.5 MI NW HENRY MILLER AV, Merced, CA

Built 1950 Load: 24.3 t ADT: 6,331

OSLO ROAD

Fair

Over: LATERAL #6

0.5 MI N AUGUST AVENUE, Merced, CA

Built 1950 Load: 24.3 t ADT: 40

YAMATO WAY

Fair

Over: LIVINGSTON CANAL

AT EUCALYPTUS AVE, Merced, CA

Built 1960 Load: 24.3 t ADT: 40

CENTRAL AVENUE

Fair

Over: LIVINGSTON CANAL

AT OLIVE AVE, Merced, CA

Built 1950 Load: 24.3 t ADT: 620

FOX ROAD

Fair

Over: CANAL CREEK

20 FT. N BELLEVUE ROAD, Merced, CA

Built 1960 Load: 24.3 t ADT: 145

REILLY ROAD

Fair

Over: MILES CREEK

0.7 MI E OF SR 59, Merced, CA

Built 1955 Load: 24.3 t ADT: 150

EAST YOSEMITE AVE

Fair

Over: FAIRFIELD CANAL

0.9 MI W ARBOLEDA DR, Merced, CA

Built 1950 Load: 24.3 t ADT: 2,569

BUTTS ROAD

Fair

Over: DELTA-MENDOTA CANAL

0.7 MI W WHITWORTH ROAD, Merced, CA

Built 1950 Load: 24.3 t ADT: 10

WALTZ ROAD

Fair

Over: BEAR CREEK

1.2 MI NE CUNNINGHAM ROAD, Merced, CA

Built 1965 Load: 24.3 t ADT: 38

TYLER ROAD

Fair

Over: MILES CREEK

0.38 MI NORTH REILLY ROAD, Merced, CA

Built 1962 Load: 24.3 t ADT: 50

INDIANA AVENUE

Fair

Over: ARROYO CANAL

2.0 MI S OF SR 152, Merced, CA

Built 1958 Load: 24.3 t ADT: 1,095

INDIANA AVENUE

Fair

Over: POSO SLOUGH

2.8 MI SOUTH OF SR 152, Merced, CA

Built 1964 Load: 24.3 t ADT: 1,273

PALM AVENUE

Fair

Over: SAN JUAN CANAL

0.5 MI S OF SR 152, Merced, CA

Built 1959 Load: 24.3 t ADT: 1,610

DENTON ROAD

Fair

Over: SAN JUAN CANAL

0.1 MI W OF PALM AVE, Merced, CA

Built 1959 Load: 24.3 t ADT: 400

HEALY ROAD

Fair

Over: DUTCHMAN CREEK

0.1 MI N SANDY MUSH ROAD, Merced, CA

Built 1972 Load: 24.3 t ADT: 400

SANDY MUSH ROAD

Fair

Over: DUTCHMAN CREEK

4.2 MI W OF SR 99, Merced, CA

Built 1972 Load: 24.3 t ADT: 400

Showing 2,901-2,950 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.