State profile · Below median Poor share

Colorado 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 Colorado.

8,965
Public bridges
35.7%
Good condition
4.8%
Poor condition

Colorado holds 8,965 public highway bridges (#27 of 52 by inventory) with a 4.82% Poor share (#34 of 52 by Poor share).

That is 4.8% 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 19 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

8,965

Public highway bridges in Colorado

Good Condition

35.7%

3,197 bridges rated 7-9

-14.3pp vs 50% benchmark

Poor Condition

4.8%

432 bridges whose lowest applicable component is rated 0-4

-2.7pp vs national avg 7.5%

Colorado vs national bridge condition

Colorado - Good condition share 35.7%
National avg

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

Colorado - Poor-condition share 16.1%
National avg

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

Colorado 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: Colorado has 8,965 bridges and a 4.8% Poor-condition share in the 2024 NBI, rank #19 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 (%) CO, Public bridges in inventory (thousands): 9k · Poor-condition share (%): 4.82%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%CA, Public bridges in inventory (thousands): 25.8k · Poor-condition share (%): 5.91%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: Colorado has 8,965 bridges and a 4.8% Poor-condition share in the 2024 NBI, rank #19 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.

Colorado 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

8,965 27th of 54 higher than 27 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 Colorado

The highlighted point is Colorado: 8,965 bridges and 4.82% in Poor condition, rank #19 of 54 jurisdictions ordered from the lowest share upward. The five jurisdictions immediately above and below Colorado on that same Poor-share ordering:

  • Connecticut: 4,365 bridges · 4.72% Poor
  • Ohio: 26,729 bridges · 4.74% Poor
  • Colorado: 8,965 bridges · 4.82% Poor
  • Idaho: 4,616 bridges · 4.90% Poor
  • Indiana: 19,495 bridges · 5.22% Poor

The full national sortable table lives on the rankings page.

Material families in Colorado

Exclusive FHWA material families across all 8,965 bridges in this state; continuous variants fold into the parent family. Orthogonal to the Poor-share scatter above.

Who maintains Colorado’s inventory

State agency holds 38.8% of the 8,965 public highway bridges filed under Colorado in the 2024 NBI, the agency-of-record split for this state, not a condition verdict.

When Colorado’s bridges were built

Pre-1950 construction accounts for 8.5% of the 8,965 bridges with a recorded original year in Colorado. Era bands are orthogonal to the Poor-share ranking above.

Condition Distribution

Colorado35.7%59.5%GoodFairPoor
Bridge inventory deck-condition mix - Colorado (FHWA NBI)

Counties (64)

Adams 535 Alamosa 16 Arapahoe 391 Archuleta 44 Baca 106 Bent 68 Boulder 311 Broomfield 66 Chaffee 84 Cheyenne 61 Clear Creek 77 Conejos 62 Costilla 39 Crowley 28 Custer 20 Delta 64 Denver 458 Dolores 28 Douglas 263 Eagle 174 El Paso 686 Elbert 85 Fremont 137 Garfield 167 Gilpin 19 Grand 88 Gunnison 100 Hinsdale 31 Huerfano 94 Jackson 47 Jefferson 464 Kiowa 31 Kit Carson 130 La Plata 102 Lake 17 Larimer 559 Las Animas 207 Lincoln 129 Logan 182 Mesa 319 Mineral 26 Moffat 80 Montezuma 61 Montrose 118 Morgan 192 Otero 195 Ouray 39 Park 55 Phillips 27 Pitkin 62 Prowers 137 Pueblo 264 Rio Blanco 54 Rio Grande 71 Routt 96 Saguache 41 San Juan 13 San Miguel 59 Sedgwick 64 Summit 57 Teller 27 Washington 75 Weld 614 Yuma 49

Colorado 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 Colorado on the same metric.

CT

Connecticut

4.72% top marginal rate
Structure
Progressive
Burden @ $100K
$4,365

OH

Ohio

4.74% top marginal rate
Structure
Progressive
Burden @ $100K
$26,729
Selected

CO

Colorado

4.82% top marginal rate
Structure
Progressive
Burden @ $100K
$8,965

ID

Idaho

4.90% top marginal rate
Structure
Progressive
Burden @ $100K
$4,616

IN

Indiana

5.22% top marginal rate
Structure
Progressive
Burden @ $100K
$19,495

Bridges Needing Most Attention in Colorado

Six lowest-condition bridges in Colorado, ranked by the portal's composite display score. Inspection intervals are risk-based under current NBIS rules.

144TH AVENUE

Poor

Over: LOST CREEK

1.2 MILES WEST OF SH 79, Adams, CO

Built 1960 Load: 0.0 t

County Road 79.0

Poor

Over: Salado Creek

2.8 Mi N of CR 64, Las Animas, CO

Built 2020 Load: 0.0 t ADT: 2

County Road 59

Poor

Over: N. Sterling Outlet Canal

0.3 Mi N of Co Rd 58, Logan, CO

Built 1940 Load: 1.4 t ADT: 6

COTTONWOOD ST

Poor

Over: NORTH CRESTONE CREEK

IN TOWN OF CRESTONE, Saguache, CO

Built 1991 Load: 2.3 t ADT: 65

CO Rd 32

Poor

Over: Feeder Ditch

0.28 MI E of Co Rd 75, Las Animas, CO

Built 1970 Load: 2.7 t ADT: 7

POTOMAC STREET

Poor

Over: OBRIAN CANAL

0.2 MILE NORTH OF SH 2, Adams, CO

Built 1940 Load: 3.8 t ADT: 190

All Bridges in Colorado

EVANS AVENUE

Fair

Over: BESSEMER DITCH

JUST N OF JONES STREET, Pueblo, CO

Built 1967 Load: 32.7 t ADT: 2,120

LAKE AVENUE

Fair

Over: BESSEMER DITCH

CORNER OF LAKE/ADAMS, Pueblo, CO

Built 1940 Load: 32.7 t ADT: 6,100

PUEBLO MALL DRIVE

Fair

Over: UNNAMED DRAINAGE

IN PUEBLO, Pueblo, CO

Built 1980 Load: 32.7 t ADT: 412

JERRY MURPHY ROAD

Fair

Over: UNNAMED WASH

1.1 MI N OF SH 47, Pueblo, CO

Built 1978 Load: 32.7 t ADT: 1,069

Oakshire Lane

Fair

Over: Local Drainage

At Chelton Lane, Pueblo, CO

Built 1975 Load: 32.7 t ADT: 3,207

POLK STREET

Fair

Over: BESSEMER DITCH

IN PUEBLO, Pueblo, CO

Built 1962 Load: 32.7 t ADT: 2,313

PRAIRIE AVENUE

Fair

Over: BESSEMER DITCH

CORNER OF PRAIRIE/ADAM, Pueblo, CO

Built 1960 Load: 32.7 t ADT: 2,964

MAIN STREET

Fair

Over: CATLIN CANAL

N Ent-Park/.3 Mi S SH50, Otero, CO

Built 1975 Load: 32.7 t ADT: 255

CHESTNUT AVENUE

Fair

Over: ROCKY FORD CANAL

N OF SH 50/ W OF 7TH ST, Otero, CO

Built 1941 Load: 32.7 t ADT: 596

County Road 5

Fair

Over: Piceance Creek

1.9 Mi S of St Hwy 64, Rio Blanco, CO

Built 1976 Load: 32.7 t ADT: 380

County Road 8

Fair

Over: EF Williams F Creek

.3 Mi S of CR 19, Rio Blanco, CO

Built 1960 Load: 32.7 t ADT: 214

CO RD 27

Fair

Over: WEST DOUGLAS CREEK

0.2 MI E OF ST HWY 139, Rio Blanco, CO

Built 2012 Load: 32.7 t ADT: 47

County Road 65

Fair

Over: White River

0.1 Mi N of St Hwy 64, Rio Blanco, CO

Built 1984 Load: 32.7 t ADT: 295

OAK CREEK AVE

Fair

Over: SOUTH OAK CREEK

IN CITY OF ROCKVALE, Fremont, CO

Built 1988 Load: 32.7 t ADT: 359

CITY F STREET

Fair

Over: ARKANSAS RIVER

IN CITY OF SALIDA, Chaffee, CO

Built 1906 Load: 32.7 t ADT: 2,325

County Road 22.9

Fair

Over: Cottonwood Creek

200 Ft. So. of US Hwy 138, Sedgwick, CO

Built 1922 Load: 32.7 t

STEPHENS STREET

Fair

Over: STRAIGHT CREEK

NEAR FACTORY OUTLET, Summit, CO

Built 1989 Load: 32.7 t ADT: 8,716

COUNTY ROAD 57P

Fair

Over: FALL CREEK

7.4 MI S OF PLACERVILLE, San Miguel, CO

Built 1961 Load: 32.7 t ADT: 60

WOOD RD

Fair

Over: BRUSH CREEK

.01 MI S. OF BRUSH CR RD, Pitkin, CO

Built 2008 Load: 32.7 t ADT: 4,512

Tevis Street

Fair

Over: B Ditch

Tevis St and B Ditch, El Paso, CO

Built 1992 Load: 32.7 t ADT: 800

Nelson Boulevard

Fair

Over: C Ditch

Nelson Blvd. and C Ditch, El Paso, CO

Built 2009 Load: 32.7 t ADT: 1,000

Prussman Blvd.

Fair

Over: C Ditch

Prussman and Sheridan Ave, El Paso, CO

Built 1992 Load: 32.7 t ADT: 400

108TH AVENUE

Fair

Over: GRANGE HALL CREEK

750 FT E OF COLORADO BLVD, Adams, CO

Built 1975 Load: 32.7 t ADT: 2,849

COLORADO BLVD

Fair

Over: GRANGE HALL CREEK

0.12 MI N OF 108TH AVE, Adams, CO

Built 1979 Load: 32.7 t ADT: 19,542

COLORADO BLVD

Fair

Over: BRANTNER GULCH

INT OF CO BLVD/124TH AVE, Adams, CO

Built 1979 Load: 32.7 t ADT: 10,591

GILPIN STREET

Fair

Over: LOCAL DRAINAGE

.1 MI S OF 168th AVE, Adams, CO

Built 2005 Load: 32.7 t ADT: 1,257

WASHINGTON STREET

Fair

Over: NIVER CREEK

JUST S OF CORONADO PKWY, Adams, CO

Built 1960 Load: 32.7 t ADT: 24,177

YORK STREET

Fair

Over: LOCAL DRAINAGE

JUST S OF 150TH AVENUE, Adams, CO

Built 2002 Load: 32.7 t ADT: 3,806

ANIMAS ST

Fair

Over: PURGATOIRE RIVER

BTW NEVADA AVE &MODIC, Las Animas, CO

Built 1962 Load: 32.7 t ADT: 2,088

KINNIKINNICK ROAD

Fair

Over: GORE CREEK

JUST S OF FRONTAGE ROAD, Eagle, CO

Built 1980 Load: 32.7 t ADT: 1,191

MAIN GORE DRIVE

Fair

Over: GORE CREEK

0.1 MI N OF JUNIPER LANE, Eagle, CO

Built 1975 Load: 32.7 t ADT: 869

MEADOW DRIVE

Fair

Over: GORE CREEK

0.01 MI S STREAMSIDE CIR, Eagle, CO

Built 1975 Load: 32.7 t ADT: 1,101

WESTHAVEN DRIVE

Fair

Over: GORE CREEK

0.3 MI SW OF FRONTAGE RD, Eagle, CO

Built 1979 Load: 32.7 t ADT: 703

County Road 4

Fair

Over: Fulton Ditch

0.9 Mi E of US Hwy 85, Weld, CO

Built 1970 Load: 32.7 t ADT: 94

County Road 6

Fair

Over: South Platte River

1.1 Mi E of Co Rd 23, Weld, CO

Built 1970 Load: 32.7 t ADT: 1,224

County Road 16.5

Fair

Over: Boulder Creek

0.8 Mi E of Co Rd 1, Weld, CO

Built 1983 Load: 32.7 t ADT: 572

County Road 17

Fair

Over: Big Thompson River

0.9 Mi N of Co Rd 50, Weld, CO

Built 1978 Load: 32.7 t ADT: 48

County Road 19

Fair

Over: Little Thompson River

0.1 Mi N of Co Rd 46.5, Weld, CO

Built 1960 Load: 32.7 t ADT: 224

County Road 21

Fair

Over: Big Dry Creek

0.5 Mi N of Co Rd 6, Weld, CO

Built 1970 Load: 32.7 t ADT: 313

83rd Avenue

Fair

Over: Cache La Poudre River

0.3 Mi N of Co Rd 62, Weld, CO

Built 1981 Load: 32.7 t ADT: 6,792

CR27.5-Two Rvr Pkw

Fair

Over: Big Thompson River

0.3 Mi N of Co Rd 396, Weld, CO

Built 1970 Load: 32.7 t ADT: 1,126

County Road 28

Fair

Over: South Platte River

0.7 Mi E of Co Rd 23, Weld, CO

Built 1965 Load: 32.7 t ADT: 1,008

County Road 31

Fair

Over: Evans Ditch No. 2

0.5 Mi N of Co Rd 36, Weld, CO

Built 1973 Load: 32.7 t ADT: 145

County Road 33

Fair

Over: Ashcroft Draw

Arrowhead Dr & 37th S, Weld, CO

Built 1970 Load: 32.7 t ADT: 532

35th Avenue

Fair

Over: Cache La Poudre River

0.6 Mi N of F S & 36t, Weld, CO

Built 1970 Load: 32.7 t ADT: 4,683

25th Avenue

Fair

Over: Cache La Poudre River

0.2 Mi S of W O St, Weld, CO

Built 1970 Load: 32.7 t ADT: 2,694

County Road 47

Fair

Over: Latham Ditch

0.9 Mi N of Co Rd 54, Weld, CO

Built 1991 Load: 32.7 t ADT: 718

County Road 49

Fair

Over: Lone Tree Creek

0.5 Mi N of St Hwy 392, Weld, CO

Built 1970 Load: 32.7 t ADT: 131

County Road 52

Fair

Over: Loveland Greeley Canal

0.7 Mi E of St Hwy 257, Weld, CO

Built 1968 Load: 32.7 t ADT: 207

County Road 54

Fair

Over: South Platte River

0.1 Mi E of Co Rd 41, Weld, CO

Built 1973 Load: 32.7 t ADT: 2,391

Showing 3,151-3,200 of 8,965 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 Colorado's inventory picture to drill to a county or a specific span.

  • Browse counties in Colorado 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. Colorado 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.