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

N GATEWAY DR

Fair

Over: SR 99

06-MAD-099-12.75-MAD, Madera, CA

Built 1958 Load: 22.7 t ADT: 4,000

W CHURCH AVE

Fair

Over: DRY CREEK CANAL

0.07 MI EAST OF VALENTINE, Fresno, CA

Built 1925 Load: 22.7 t ADT: 1,200

STATE ROUTE 1

Fair

Over: LITTLE SUR RIVER

05-MON-001-56.10, Monterey, CA

Built 1953 Load: 22.7 t ADT: 4,300

BRADLEY RD

Fair

Over: SALINAS RIVER

JUST EAST OF US HWY 101, Monterey, CA

Built 1931 Load: 22.7 t ADT: 210

EVERETT AVE

Fair

Over: LAST CHANCE DITCH

0.2 MI E OF 13TH AVE, Kings, CA

Built 1975 Load: 22.7 t ADT: 100

STATE ROUTE 198

Fair

Over: SALT CREEK

06-TUL-198-41.23, Tulare, CA

Built 1922 Load: 22.7 t ADT: 5,000

ROAD 56

Fair

Over: TRAVER CANAL

@ AVE 416, Tulare, CA

Built 1963 Load: 22.7 t ADT: 1,620

RD 208

Fair

Over: WHITE RIVER

0.3 MI S OF AVE 40, Tulare, CA

Built 1948 Load: 22.7 t ADT: 550

AVE 240

Fair

Over: INSIDE CREEK

0.6 MI W OF RD 168, Tulare, CA

Built 1951 Load: 22.7 t ADT: 300

SOUTH BAY BLVD

Fair

Over: LOS OSOS CREEK

2.15 MI SOUTH OF SR 1, San Luis Obispo, CA

Built 1966 Load: 22.7 t ADT: 15,232

CECIL AVE

Fair

Over: FRIANT-KERN CANAL

0.5 MI EAST OF ZACHARY AV, Kern, CA

Built 1949 Load: 22.7 t ADT: 2,260

US HIGHWAY 101 SB

Fair

Over: GAVIOTA CREEK

05-SB-101-47.23, Santa Barbara, CA

Built 1931 Load: 22.7 t ADT: 16,000

STATE ROUTE 217

Fair

Over: GOLETA SLOUGH

05-SB-217-0.72-SB, Santa Barbara, CA

Built 1963 Load: 22.7 t ADT: 12,500

STATE ROUTE 91

Fair

Over: ST RTE 19 (LAKEWOOD BL)

07-LA-091-6.03-BFL, Los Angeles, CA

Built 1968 Load: 22.7 t ADT: 270,000

INTERSTATE 210

Fair

Over: LINCOLN AVE

07-LA-210-R24.17-PAS, Los Angeles, CA

Built 1973 Load: 22.7 t ADT: 111,000

FIFTH ST

Fair

Over: PACOIMA WASH

0.5MI E/O MACLAY AVE, Los Angeles, CA

Built 1953 Load: 22.7 t ADT: 4,141

MIRALOMA AVE

Fair

Over: STATE ROUTE 57

12-ORA-057-15.90-ANA, Orange, CA

Built 1998 Load: 22.7 t ADT: 10,000

LYON AVENUE

Fair

Over: HEMET CHANNEL

0.47 MI. S/O RTE. 74 HWY., Riverside, CA

Built 1971 Load: 22.7 t ADT: 9,400

STATE ROUTE 52 WB

Fair

Over: REGENTS ROAD

11-SD-052-1.34-SD, San Diego, CA

Built 1970 Load: 22.7 t ADT: 49,500

MIRAMAR RD

Fair

Over: MTDB BNSF RY & AMTRAK

1.2 MI E OF I-805, San Diego, CA

Built 1975 Load: 22.7 t ADT: 60,580

CAMINO DEL MAR

Fair

Over: MTDB BNSF RY & AMTRAK

AT JIMMY DURANTE BLVD, San Diego, CA

Built 1927 Load: 22.7 t ADT: 12,100

MUDD RD

Fair

Over: WESTSIDE MAIN CANAL

0.3 MI W/O FORRESTER RD, Imperial, CA

Built 1950 Load: 22.7 t ADT: 50

FDR 96

Fair

Over: DUNCAN CREEK

S26 T15N R13E, Placer, CA

Built 1954 Load: 22.7 t ADT: 50

LODGEPOLE CAMPGROU

Fair

Over: MARBLE FORK KAWEAH RIVER

21.5 MI. NORTH OF ASH MT., Tulare, CA

Built 1932 Load: 22.7 t ADT: 50

GLACIER POINT ROAD

Fair

Over: BRIDALVEIL CREEK

8.8 miles east from El Po, Mariposa, CA

Built 1933 Load: 22.7 t ADT: 1,517

ALDERPOINT RD

Fair

Over: EEL RIVER & NWP RR

0.5 MI SE OF ALDERPOINT, Humboldt, CA

Built 1972 Load: 23.0 t ADT: 240

COFFEE CREEK ROAD

Fair

Over: SOUTH FORK COFFEE CREEK

14.5 MI W OF STATE RTE 3, Trinity, CA

Built 1979 Load: 23.0 t ADT: 76

ASH CREEK ROAD

Fair

Over: ANDERSON CREEK

100 E BALLS FERRY RD, Shasta, CA

Built 1950 Load: 23.0 t ADT: 1,161

STATE ROUTE 36

Fair

Over: MILL CREEK

02-TEH-036-91.61, Tehama, CA

Built 1929 Load: 23.0 t ADT: 1,100

MANTON RD

Fair

Over: COLEMAN DITCH

8.4 MI N/E OF SH 36, Tehama, CA

Built 1954 Load: 23.0 t ADT: 524

OLD HWY 99 W

Fair

Over: MCCLURE CREEK

0.15 MI N GYLE RD, Tehama, CA

Built 1918 Load: 23.0 t ADT: 3,140

MAIN ST

Fair

Over: REEDS CREEK

0.1 MI S WILLOW ST, Tehama, CA

Built 1927 Load: 23.0 t ADT: 16,400

CAPAY RD

Fair

Over: SOUR GRASS CREEK

3.5 MI E OF RD 99 W, Tehama, CA

Built 1919 Load: 23.0 t ADT: 982

STATE ROUTE 271

Fair

Over: SOUTH FORK EEL RIVER

01-MEN-271-22.57, Mendocino, CA

Built 1917 Load: 23.0 t ADT: 95

STATE ROUTE 128

Fair

Over: INDIAN CREEK

01-MEN-128-23.34, Mendocino, CA

Built 1953 Load: 23.0 t ADT: 4,150

U.S. HIGHWAY 101

Fair

Over: RUSSIAN RIVER

01-MEN-101-9.24, Mendocino, CA

Built 1934 Load: 23.0 t ADT: 13,800

U.S. HIGHWAY 101

Fair

Over: SOUTH FORK EEL RIVER

01-MEN-101-R99.51, Mendocino, CA

Built 2009 Load: 23.0 t ADT: 6,100

COUNTY RD P

Fair

Over: WILLOW CREEK

0.4 MI S OF S.H. 162, Glenn, CA

Built 1940 Load: 23.0 t ADT: 249

STATE ROUTE 32

Fair

Over: BIG CHICO CREEK

03-BUT-032-8.31-CHC, Butte, CA

Built 1921 Load: 23.0 t ADT: 17,400

TABLE MTN BLVD

Fair

Over: CAMPBELL CREEK OVERFLOW

1.5 MI NO OF TABLE MT OC, Butte, CA

Built 1940 Load: 23.0 t ADT: 456

MCDERMOTT ROAD

Fair

Over: DIRKS CREEK

1.5 MI N OF DELEVAN RD, Colusa, CA

Built 1960 Load: 23.0 t ADT: 31

STATE ROUTE 70 WB

Fair

Over: BEAR RIVER (RIO OSO)

03-SUT-070-8.09, Sutter, CA

Built 1961 Load: 23.0 t ADT: 15,800

CUTTING AVE

Fair

Over: SUTTER-BUTTE CANAL

0.2 MI EAST OF ST RTE 99, Sutter, CA

Built 1930 Load: 23.0 t ADT: 25

LINCOLN BLVD

Fair

Over: AUBURN RAVINE

0.55 MI S OF SR 193, Placer, CA

Built 1926 Load: 23.0 t ADT: 29,000

FITZPATRICK LANE

Fair

Over: FAY CREEK

0.9 MI N SALMON CREEK RD, Sonoma, CA

Built 1973 Load: 23.0 t ADT: 300

OLD MONTE RIO RD

Fair

Over: HILLSIDE

0.1 MI NE SANTA ROSA AVE, Sonoma, CA

Built 1980 Load: 23.0 t ADT: 100

SCOTT ROAD

Fair

Over: CARSON CREEK

3.7 MI N LATROBE RD, Sacramento, CA

Built 1979 Load: 23.0 t ADT: 2,265

SIR-FRANCIS DRAKE

Fair

Over: LAGUNITAS CREEK

5.9 MI E OF SH 1, Marin, CA

Built 1929 Load: 23.0 t ADT: 2,000

DIAMOND BLVD

Fair

Over: WALNUT CREEK

0.1 MI N WILLOW PASS RD, Contra Costa, CA

Built 1966 Load: 23.0 t ADT: 33,000

PACIFIC AVE

Fair

Over: UP RR BNSF RY & AMTRAK

AT SAN PABLO AVE, Contra Costa, CA

Built 1958 Load: 23.0 t ADT: 1,518

Showing 2,251-2,300 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.