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

E-470 SB

Good

Over: 19th Avenue

20.70 MI FROM I25, Adams, CO

Built 2006 Load: 34.2 t ADT: 18,115

I 70 ML

Good

Over: CITY STREET

AT GEORGETOWN, Clear Creek, CO

Built 1989 Load: 34.2 t ADT: 33,000

I 25 ML SBND

Good

Over: PORTER DRAW

4.7 MI N OF JCT US 50 W S, Pueblo, CO

Built 2006 Load: 34.2 t ADT: 17,500

County Road 89

Good

Over: Duck Cr / Settlers Ditch

0.4 Mi N of U.S. Hwy 138, Logan, CO

Built 1995 Load: 34.2 t ADT: 43

County Road 24

Good

Over: Tremont Canal

0.8 Mi N of Co Rd T, Morgan, CO

Built 1997 Load: 34.2 t ADT: 1,108

COUNTY ROAD 266

Good

Over: GREENHORN CREEK

0.5 MI W OF RYE, Pueblo, CO

Built 1996 Load: 34.2 t ADT: 238

CO RD 327/AVONDALE

Good

Over: BESSEMER DITCH

0.5 MI S OF OLSON RD, Pueblo, CO

Built 1996 Load: 34.2 t ADT: 168

3025: THE GATE BRI

Good

Over: Lake Fork Gunnison River

27 mi SW of Gunnison CO, Chaffee, CO

Built 2013 Load: 34.3 t ADT: 25

NO DATA ENTERED

Good

Over: WILLIAMS FORK

JUST EAST OF HORSESHOE CG, Grand, CO

Built 1950 Load: 34.3 t ADT: 50

COUNTY ROAD 5500

Good

Over: BIG SANDY WASH

.5 MI N OF HICKORY RD, Montrose, CO

Built 2013 Load: 34.3 t ADT: 141

SIMMS STREET

Good

Over: RALSTON CREEK

0.3 MI S OF 72ND AVENUE, Jefferson, CO

Built 1990 Load: 34.3 t ADT: 9,302

2ND AVENUE

Good

Over: HIGHLINE CANAL

0.2 MI E OF PEORIA ST, Arapahoe, CO

Built 1988 Load: 34.3 t ADT: 1,805

I 25 ML SBND

Good

Over: BNSF RR

0.5 MI N OF JCT SH 14, Larimer, CO

Built 1966 Load: 34.3 t ADT: 19,000

83rd St (CO Rd 23)

Good

Over: Little Thompson River

1.8 Mi N of Woodland, Boulder, CO

Built 2017 Load: 34.3 t ADT: 2,443

UNION AVE WB

Good

Over: I-25

UNION AVE OVER I-25, Denver, CO

Built 1992 Load: 34.3 t ADT: 4,287

VIRGINIA AVENUE

Good

Over: WEIR GULCH

E OF SHERIDAN AT 500 BLOC, Denver, CO

Built 1976 Load: 34.3 t ADT: 564

E-470 NB

Good

Over: Holly Street

42.61 MI FROM I25, Adams, CO

Built 2001 Load: 34.3 t ADT: 18,236

E-470 SB

Good

Over: Holly Street

42.61 MI FROM I25, Adams, CO

Built 2001 Load: 34.3 t ADT: 18,466

I 70 ML WBND

Good

Over: HILLSIDE

1.9 MI E OF GLNWD SPGS, Garfield, CO

Built 1986 Load: 34.3 t ADT: 8,500

I 70 ML WBND

Good

Over: ACCESS RD GRIZZLY CREEK

GRZLY CRK-RST GLNWD CNYN, Garfield, CO

Built 1986 Load: 34.3 t ADT: 8,500

KIPLING STREET

Good

Over: BEAR CREEK

.5 MI S OF MORRISON RD, Jefferson, CO

Built 2006 Load: 34.3 t ADT: 4,249

WINDERMERE ST

Good

Over: LITTLES CREEK

0.04 MI N OF CALEY AVE, Arapahoe, CO

Built 2010 Load: 34.3 t ADT: 621

SH 69 ML

Good

Over: MILLIGAN ARROYO

3.2 MILES NW OF GARDNER, Huerfano, CO

Built 2018 Load: 34.3 t ADT: 420

US 285 ML

Good

Over: ROCK CREEK

3 MI S OF ALAMOSA, Alamosa, CO

Built 1960 Load: 34.3 t ADT: 5,900

CR611 / BOONE RD

Good

Over: COLORADO CANAL

0.1 MI N of SH96, Pueblo, CO

Built 2021 Load: 34.3 t ADT: 178

Marshall Road

Good

Over: Coal Creek

0.07 Mi N of Creek View, Boulder, CO

Built 2022 Load: 34.3 t ADT: 1,867

Weld County Pkwy

Good

Over: Cache La Poudre River

0.3 Mi S of CR 60.5, Weld, CO

Built 2016 Load: 34.3 t ADT: 8,531

COUNTY ROAD 387

Good

Over: SOUTH HARDSCRABBLE CREEK

5.0 MI SE OF GREENWOOD, Custer, CO

Built 1990 Load: 34.4 t ADT: 31

I 70 ML WBND

Good

Over: WOLF CREEK

2 MI W OF JCT STRASBURG S, Arapahoe, CO

Built 1993 Load: 34.4 t ADT: 8,500

I 70 ML EBND

Good

Over: WOLF CREEK

2.8 MI E OF RAMP TO US 36, Arapahoe, CO

Built 1993 Load: 34.4 t ADT: 8,500

County Road 71

Good

Over: N. Sterling Outlet Canal

0.7 Mi N of Co Rd 66, Logan, CO

Built 1993 Load: 34.4 t ADT: 99

County Road 85

Good

Over: Harmony No. 1 Canal

1.4 Mi N of US Hwy 138, Logan, CO

Built 2006 Load: 34.4 t ADT: 25

County Road 13

Good

Over: Riverside Canal

0.2 Mi N of Co Rd W.5, Morgan, CO

Built 1997 Load: 34.4 t ADT: 93

POLECAT LANE

Good

Over: PEDESTRIAN/SKIER

CITY STREET - POLECAT, San Miguel, CO

Built 1990 Load: 34.4 t ADT: 73

MILLER STREET

Good

Over: VAN BIBBER CREEK

JUST S OF 58TH AVENUE, Jefferson, CO

Built 2007 Load: 34.5 t ADT: 95

COUNTY ROAD 122

Good

Over: SOUTH TURKEY CREEK

3.75 MI SOUTH OF TINYTOWN, Jefferson, CO

Built 2000 Load: 34.5 t ADT: 1,031

RAMP TO I 70 WBND

Good

Over: RAMP TO CHAMBERS ROAD R

E / CHAMBERS RD N / I-70, Adams, CO

Built 1993 Load: 34.5 t ADT: 33,000

CHAMBERS RD SB

Good

Over: NEWLIN GULCH

.4 M NW NEWLIN GULCH BLVD, Douglas, CO

Built 2009 Load: 34.5 t ADT: 13,454

County Road 58

Good

Over: South Platte River

0.6 Mi E of Hemlock St, Weld, CO

Built 1990 Load: 34.5 t ADT: 8,636

BATES AVE

Good

Over: LOCAL DRAINAGE

.5 MI SE OF TOWER RD, Arapahoe, CO

Built 1984 Load: 34.6 t ADT: 2,121

COUNTRY CLUB DR.

Good

Over: BEAR CREEK

JUST N OF PERRY PARK BLVD, Douglas, CO

Built 2004 Load: 34.6 t ADT: 214

COUNTY ROAD 65

Good

Over: COMANCHE CREEK

1.1 MI S OF COUNTY RD 150, Elbert, CO

Built 1987 Load: 34.6 t ADT: 45

COUNTY ROAD 14

Good

Over: MID FK SOUTH PLATTE RVR

0.3 MI W OF JCT SH 9, Park, CO

Built 1995 Load: 34.6 t ADT: 796

County Rd 4

Good

Over: Tribu. of N. Sand Creek

0.45 Mi. East of Co. Rd., Yuma, CO

Built 1997 Load: 34.6 t ADT: 14

County Road K

Good

Over: Arikaree River

0.80 Mi N of Co Rd 10, Yuma, CO

Built 1994 Load: 34.6 t ADT: 17

County Road KK

Good

Over: Black Wolf Creek

0.65 Mi S of Co Rd 22, Yuma, CO

Built 1993 Load: 34.6 t ADT: 168

County Road KK

Good

Over: S. Fork Dry Willow Creek

0.75 Mi N of Co Rd 24, Yuma, CO

Built 1993 Load: 34.6 t ADT: 174

County Road KK.5

Good

Over: N. Fork Republican River

0.25 Mi N of US Hwy 34, Yuma, CO

Built 1994 Load: 34.6 t ADT: 39

County Road U

Good

Over: Arikaree River

3.10 Mi N of Co Rd 10, Yuma, CO

Built 1995 Load: 34.6 t ADT: 72

IRR BIA RTE 163

Good

Over: DEVIL CREEK

1.6 KM SW OF CHIMNEY ROCK, Archuleta, CO

Built 1987 Load: 34.7 t ADT: 10

Showing 6,751-6,800 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.