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 ROAD #11

Good

Over: BRETONA CREEK

0.50 MI E OF C.R. #91B, Yolo, CA

Built 1940 Load: 16.5 t ADT: 75

CR 86A

Good

Over: SOUTH FORK WILLOW SLOUGH

1/2 MI S OF SR 16, Yolo, CA

Built 1923 Load: 16.5 t ADT: 175

RIO LINDA BLVD

Good

Over: SOUTH CHANNEL DRY CREEK

1.0 MI S ELKHORN BL, Sacramento, CA

Built 1939 Load: 16.5 t ADT: 6,113

NORWOOD AVE

Good

Over: ROSS CREEK

0.1 MI NORTH OF SHADY LN, Marin, CA

Built 1908 Load: 16.5 t ADT: 1,200

ARMSTRONG RD

Good

Over: STATE ROUTE 99

10-SJ-099-27.50, San Joaquin, CA

Built 1964 Load: 16.5 t ADT: 3,000

LINCOLN WAY

Good

Over: SUNSET BLVD

OVER SUNSET BLVD, San Francisco, CA

Built 1931 Load: 16.5 t ADT: 20,040

TREASURE ISLAND RD

Good

Over: SIDEHILL

JSO SHV#5, San Francisco, CA

Built 1938 Load: 16.5 t ADT: 3,000

TREASURE ISLAND RD

Good

Over: SIDEHILL

JNO SHV#5/ JSO SHV #8, San Francisco, CA

Built 1938 Load: 16.5 t ADT: 3,000

4TH ST

Good

Over: SARATOGA CREEK

NEAR BASIN WAY, Santa Clara, CA

Built 1939 Load: 16.5 t ADT: 1,650

GILROY HOT SPRG RD

Good

Over: HUNTING HOLLOW CREEK

0.7 MI N CANADA RD, Santa Clara, CA

Built 1940 Load: 16.5 t ADT: 120

SALIDA BOULEVARD

Good

Over: M.I.D. LATERAL #6

0.4 MI S/O BROADWAY, Stanislaus, CA

Built 1938 Load: 16.5 t ADT: 9,500

ST FRANCIS AVENUE

Good

Over: M.I.D. MAIN CANAL

0.1 MI WEST MCHENRY AVE, Stanislaus, CA

Built 1924 Load: 16.5 t ADT: 532

CUNNINGHAM ROAD

Good

Over: MARIPOSA CREEK

3.3 MI S CHILDS AVE, Merced, CA

Built 1920 Load: 16.5 t ADT: 441

HEALY ROAD

Good

Over: DUCK SLOUGH

1.2 MI N MCNAMARA RD, Merced, CA

Built 1935 Load: 16.5 t ADT: 719

MISSION AVENUE

Good

Over: LE GRAND CANAL

0.8 MI E BURCHELL AVENUE, Merced, CA

Built 1940 Load: 16.5 t ADT: 70

AVE 18

Good

Over: DRY CREEK

0.3 MI W OF RD 23, Madera, CA

Built 1948 Load: 16.5 t ADT: 450

E BEHYMER AVE

Good

Over: ENTERPRISE CANAL

0.3 MI EAST OF MINNEWAWA, Fresno, CA

Built 1925 Load: 16.5 t ADT: 3,000

STATE ROUTE 1

Good

Over: LIME CREEK

05-MON-001-32.25, Monterey, CA

Built 1975 Load: 16.5 t ADT: 2,000

AVE 176

Good

Over: PORTER SLOUGH

0.12 MI W OF RD 202, Tulare, CA

Built 1945 Load: 16.5 t ADT: 200

AVE 388

Good

Over: SAND CREEK

0.2 MI E OF ROAD 108, Tulare, CA

Built 1939 Load: 16.5 t ADT: 250

AVENUE 408

Good

Over: SAND CREEK

AT ROAD 124, Tulare, CA

Built 1939 Load: 16.5 t ADT: 2,275

ROAD 124

Good

Over: SAND CREEK

0.05 MI N OF AVE 408, Tulare, CA

Built 1939 Load: 16.5 t ADT: 1,450

LERDO HIGHWAY

Good

Over: FRIANT-KERN CANAL

1.9 MI EAST OF CHERRY AVE, Kern, CA

Built 1951 Load: 16.5 t ADT: 9,000

BRIDGE ROAD

Good

Over: SANTA PAULA CREEK

EAST OF SR 150, Ventura, CA

Built 1941 Load: 16.5 t ADT: 300

TELEGRAPH RD

Good

Over: TODD BARRANCA

2.8 MI E OF WELLS RD, Ventura, CA

Built 1936 Load: 16.5 t ADT: 5,400

SANTA ANA RD

Good

Over: COYOTE CREEK

0.7 MI NW SR 33, Ventura, CA

Built 1955 Load: 16.5 t ADT: 2,100

FOURTH STREET

Good

Over: ROUTE 101

07-LA-101-S0.62-LA, Los Angeles, CA

Built 1947 Load: 16.5 t ADT: 50,000

STATE ROUTE 110

Good

Over: 11TH STREET

07-LA-110-21.99-LA, Los Angeles, CA

Built 1953 Load: 16.5 t ADT: 270,000

SHIRLY JEAN ST

Good

Over: VERDUGO WASH

100FT W/O LA CRESENTA AVE, Los Angeles, CA

Built 1953 Load: 16.5 t ADT: 204

WILSON HILL ROAD

Good

Over: NORTH FORK BATTLE CREEK

0.1 MI E ROCK CR RD, Shasta, CA

Built 1935 Load: 16.8 t ADT: 355

ANDERSON VALLEY HW

Good

Over: CON CREEK

1.2 MI N OF SR 128, Mendocino, CA

Built 1938 Load: 16.8 t ADT: 72

MOUNTAIN HOUSE RD

Good

Over: WILSON CREEK

2.8 MI S SR 101, Mendocino, CA

Built 1912 Load: 16.8 t ADT: 572

ROAD DD

Good

Over: HAMBRIGHT CREEK

0.8 MI N ROD 200 N NHVLE, Glenn, CA

Built 1930 Load: 16.8 t ADT: 226

E RIO BONITO RD

Good

Over: HAMILTON SLOUGH

0.2 MI E OF SH 99, Butte, CA

Built 1930 Load: 16.8 t ADT: 270

LAKESHORE BLVD

Good

Over: LYONS CREEK

0.5 MI S/O NICE-LUCERNE R, Lake, CA

Built 1931 Load: 16.8 t ADT: 1,066

OLD 99W

Good

Over: FRESHWATER CREEK

0.3 MI N FRESHWATER RD, Colusa, CA

Built 1930 Load: 16.8 t ADT: 1,797

SYCAMORE CUTOFF

Good

Over: IRRIGATION DITCH

0.1 MI N/E OF SR 45, Colusa, CA

Built 1930 Load: 16.8 t ADT: 1,085

WOODRUFF LN

Good

Over: SIMMERLY SLOUGH

0.9 MI EAST OF S.R. 70, Yuba, CA

Built 1929 Load: 16.8 t ADT: 900

WEST RIVER ST

Good

Over: DONNER CREEK

0.2 MI NE SR 89, Nevada, CA

Built 1959 Load: 16.8 t ADT: 6,840

MT VERNON RD

Good

Over: NORTH RAVINE

2.0 MI W OF AUBURN, Placer, CA

Built 1935 Load: 16.8 t ADT: 3,041

GUERNEVILLE RD

Good

Over: PETERSON CREEK

4.77 MI INTX WITH SR 116, Sonoma, CA

Built 1921 Load: 16.8 t ADT: 12,700

GUERNEVILLE RD

Good

Over: FOREST VIEW CREEK

4.82 MI INTX WITH SR 116, Sonoma, CA

Built 1921 Load: 16.8 t ADT: 12,700

BODEGA HIGHWAY

Good

Over: JONIVE CREEK

7.5 MI E/O SR 1, Sonoma, CA

Built 1922 Load: 16.8 t ADT: 6,700

WEST DRY CREEK RD

Good

Over: CRANE CREEK

4.3 MI NW WESTSIDE ROAD, Sonoma, CA

Built 1928 Load: 16.8 t ADT: 200

W DRY CREEK ROAD

Good

Over: PINE RIDGE CANYON

1.35 MI NW WESTSIDE RD, Sonoma, CA

Built 1928 Load: 16.8 t ADT: 750

DUHIG ROAD

Good

Over: HUICHICHA CREEK

0.4 MI S LAS AMIGAS RD, Napa, CA

Built 1930 Load: 16.8 t ADT: 582

LARKMEAD LANE

Good

Over: DUTCH HENRY CREEK

0.4 MI S/W SILVERDO TRAIL, Napa, CA

Built 1910 Load: 16.8 t ADT: 484

COUNTY ROAD 85

Good

Over: GOODNOW SLOUGH

AT INTERSECTION ROAD 15B, Yolo, CA

Built 1925 Load: 16.8 t ADT: 461

C.R. #29

Good

Over: WINTERS CANAL

0.13 MI E OF C.R. #88, Yolo, CA

Built 1920 Load: 16.8 t ADT: 450

COUNTY ROAD 19

Good

Over: SLOUGH S3

0.12 MI WEST OF CR 91B, Yolo, CA

Built 1940 Load: 16.8 t ADT: 650

Showing 13,001-13,050 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.