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

COUNTY RD 306

Fair

Over: CORBIN CREEK

17.64 MI N CO LINE, Glenn, CA

Built 1940 Load: 16.2 t ADT: 563

ROAD 32

Fair

Over: PRINCETON-CODORA CANAL

0.3 MI W RD X, Glenn, CA

Built 1945 Load: 16.2 t ADT: 316

ROAD V

Fair

Over: C.I.C. DRAIN

0.2 MI S CUTLER AVE, Glenn, CA

Built 1940 Load: 16.2 t ADT: 208

ROAD W

Fair

Over: C.I.C. DRAIN

0.1 MI S CAPAY AVE, Glenn, CA

Built 1940 Load: 16.2 t ADT: 57

COUNTY ROAD 303

Fair

Over: STONY CREEK

JUST EAST OF RD 306, Glenn, CA

Built 1981 Load: 16.2 t ADT: 25

OROVILLE QUINCY HY

Fair

Over: LAKE MADRONE SPILLWAY

AT LAKE MADRONE, Butte, CA

Built 1930 Load: 16.2 t ADT: 542

GRIDLEY COLUSA HWY

Fair

Over: MAIN DRAINAGE CANAL

3.7 MI E/O COLUSA CO LINE, Butte, CA

Built 1934 Load: 16.2 t ADT: 715

MIDWAY RD

Fair

Over: HIGH LIFT LATERAL CANAL

1.2 MI N RICHVALE RD, Butte, CA

Built 1918 Load: 16.2 t ADT: 6,630

MIDWAY RD

Fair

Over: MIDDLE FORK HAMLIN SLU

3 MI N OF NELSON RD, Butte, CA

Built 1915 Load: 16.2 t ADT: 1,254

STILSON CANYON RD

Fair

Over: LITTLE CHICO CREEK

1.5 MI E HUMBOLDT RD, Butte, CA

Built 1906 Load: 16.2 t ADT: 613

ESPLANADE

Fair

Over: LINDO CHANNEL

0.15 MI N OF W 11TH AVE, Butte, CA

Built 1925 Load: 16.2 t ADT: 24,100

GRIDLEY COLUSA HWY

Fair

Over: DEVIL SLOUGH

0.3 MI E/O COLUSA CO LINE, Butte, CA

Built 1937 Load: 16.2 t ADT: 1,139

GRIDLEY COLUSA HWY

Fair

Over: GRAIN SLOUGH

0.4 MI E/O COLUSA CO LINE, Butte, CA

Built 1939 Load: 16.2 t ADT: 1,139

ORVILLE-GRDLEY HWY

Fair

Over: SUTTER-BUTTE CANAL

0.5 MI E/O LARKIN RD, Butte, CA

Built 1920 Load: 16.2 t ADT: 5,298

OPENSHAW RD

Fair

Over: DRY CREEK OVERFLOW

0.2 MI N/W SHIPPEE RD, Butte, CA

Built 1922 Load: 16.2 t ADT: 10

VALLOMBROSA AVE

Fair

Over: BIG CHICO CREEK

BTW 1ST ST & MEMORIAL WY, Butte, CA

Built 1949 Load: 16.2 t ADT: 15,000

KEEFER RD

Fair

Over: KEEFER SLOUGH

2.5 MI E/O SH 99, Butte, CA

Built 1930 Load: 16.2 t ADT: 17,020

CANA HWY

Fair

Over: DIANES DITCH NO 2

1.4 MI W STATE HWY 99, Butte, CA

Built 1921 Load: 16.2 t ADT: 276

HAMILTON NORD CANA

Fair

Over: RED BARN SLOUGH

4.98 MI N OF HWY 32, Butte, CA

Built 1936 Load: 16.2 t ADT: 562

NORD GIANELLA RD

Fair

Over: BARE POLE DITCH

0.9 MI W HMTN ND CANA HY, Butte, CA

Built 1940 Load: 16.2 t ADT: 85

NORD GIANELLA ROAD

Fair

Over: CHANNEL CROSSING

0.6 MI W HMTN ND CANA HY, Butte, CA

Built 1940 Load: 16.2 t ADT: 93

MERIDIAN RD

Fair

Over: GRASSY BANKS DITCH

0.1 MI N OF HWY 32, Butte, CA

Built 1935 Load: 16.2 t ADT: 1,820

HICKS LANE

Fair

Over: KEEFER SLOUGH

0.25 MI S KEEFER RD, Butte, CA

Built 1940 Load: 16.2 t ADT: 2,900

CANA HWY

Fair

Over: BRANCH PINE CREEK

5 MI W OF S.R 99, Butte, CA

Built 1930 Load: 16.2 t ADT: 276

COTTONWOOD RD

Fair

Over: DUDLEY CREEK

0.9 MI W TABLE MTN BLVD, Butte, CA

Built 1930 Load: 16.2 t ADT: 135

CENTRAL HOUSE RD

Fair

Over: E BRANCH WYANDOTTE CREEK

0.4 MI W PALERMO-HONCUT, Butte, CA

Built 1920 Load: 16.2 t ADT: 100

CENTRAL HOUSE RD

Fair

Over: DRAINAGE DITCH

0.5 MI W OF PALERMO-HONC, Butte, CA

Built 1920 Load: 16.2 t ADT: 100

COTTONWOOD RD

Fair

Over: COTTONWOOD CREEK

2.8 MI E/O RTE 99, Butte, CA

Built 1930 Load: 16.2 t ADT: 135

NELSON RD

Fair

Over: LITTLE DRY CREEK OVFLOW

1.9 MI W MIDWAY RD, Butte, CA

Built 1930 Load: 16.2 t ADT: 164

NELSON RD

Fair

Over: DURHAM SLOUGH

4.6 MI W MIDWAY RD, Butte, CA

Built 1938 Load: 16.2 t ADT: 88

SALMON LAKE ROAD

Fair

Over: SALMON CREEK

WEST OF GOLD LAKE RD, Sierra, CA

Built 1960 Load: 16.2 t ADT: 125

WALNUT DRIVE

Fair

Over: GLENN-COLUSA CANAL

0.2 MI W ZUMWALT RD, Colusa, CA

Built 1940 Load: 16.2 t ADT: 650

DANLEY ROAD

Fair

Over: GLENN-COLUSA CANAL

0.7 MI N FRESHWATER RD, Colusa, CA

Built 1924 Load: 16.2 t ADT: 161

FINKS ROAD

Fair

Over: GLENN-COLUSA CANAL

AT DANLEY ROAD, Colusa, CA

Built 1930 Load: 16.2 t ADT: 10

FORTY MILE RD

Fair

Over: BEST SLOUGH

0.3 MI S PLUMAS ARBOGA RD, Yuba, CA

Built 1948 Load: 16.2 t ADT: 1,630

NORTH BEALE RD

Fair

Over: NORTH FORK REEDS CREEK

3.9 MI E LINDA AVE, Yuba, CA

Built 1935 Load: 16.2 t ADT: 3,900

NORTH BEALE RD

Fair

Over: BEALE AFB SLOUGH

4.8 MI E/O LINDA AVE, Yuba, CA

Built 1935 Load: 16.2 t ADT: 3,900

VIRGINIA RD

Fair

Over: SOUTH FORK REEDS CREEK

0.4 MI SOUTH ERLE RD, Yuba, CA

Built 1920 Load: 16.2 t ADT: 570

RANCHO RD

Fair

Over: KIMBALL CREEK

.7 MI SE/O OSTROM RD, Yuba, CA

Built 1925 Load: 16.2 t ADT: 230

RANCHO RD

Fair

Over: REEDS CREEK OVERFLOW

.6 MI NW/O OSTROM RD, Yuba, CA

Built 1925 Load: 16.2 t ADT: 1,700

RANCHO RD

Fair

Over: REEDS CREEK

0.8 MI N/W OSTROM RD, Yuba, CA

Built 1925 Load: 16.2 t ADT: 1,700

ERLE RD

Fair

Over: SOUTH FORK REEDS CREEK

1.7 MI E/O VIRGINIA RD, Yuba, CA

Built 1927 Load: 16.2 t ADT: 190

SCOTT GRANT RD

Fair

Over: TENNESSEE CREEK

1 MI NW OF MARYSVILLE RD, Yuba, CA

Built 1921 Load: 16.2 t ADT: 180

SPENCEVILLE RD

Fair

Over: DRY CREEK

0.8 MI E OF WALDO RD, Yuba, CA

Built 1920 Load: 16.2 t ADT: 50

FRENCHTOWN RD

Fair

Over: DRY CREEK

2 1/3 MI N OF MARYSVILLE, Yuba, CA

Built 1930 Load: 16.2 t ADT: 430

SPRING VALLEY RD

Fair

Over: LITTLE DRY CREEK

0.3 MI W MARYSVILLE RD, Yuba, CA

Built 1920 Load: 16.2 t ADT: 190

E JIBBOOM ST

Fair

Over: TROUT CREEK

JUST E/O BRIDGE ST, Nevada, CA

Built 1940 Load: 16.2 t ADT: 2,600

STATE ROUTE 20

Fair

Over: SUTTER CO EXTENSIONCANAL

03-SUT-020-12.17, Sutter, CA

Built 1920 Load: 16.2 t ADT: 12,000

MARCUM RD

Fair

Over: PING SLOUGH

1.1 MI EAST OF NICOLAUS, Sutter, CA

Built 1930 Load: 16.2 t ADT: 199

SANDERS RD

Fair

Over: LIVE OAK CANAL

0.01 MI W OF LARKIN RD, Sutter, CA

Built 1945 Load: 16.2 t ADT: 391

Showing 751-800 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.