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

Boise Avenue

Good

Over: Greeley Loveland Canal

0.2 N of E. 8th Street, Larimer, CO

Built 2001 Load: 43.7 t ADT: 10,915

MTN VILLAGE BLV

Good

Over: PEDESTRIAN / SKIER

CITY STREET - MTN VILLAGE, San Miguel, CO

Built 1990 Load: 43.7 t ADT: 2,195

ARAPAHOE RD

Good

Over: SADDLE ROCK GOLF PATH

0.6 MI E OF LIVERPOOL ST, Arapahoe, CO

Built 1998 Load: 43.8 t ADT: 24,668

US 285 ML NBND

Good

Over: SH 88 ML (FEDERAL BLVD)

HAMPDEN OVER FEDERAL, Arapahoe, CO

Built 2012 Load: 43.8 t ADT: 31,000

US 285 ML SBND

Good

Over: SH 88 ML (FEDERAL BLVD)

HAMPDEN OVER FEDERAL, Arapahoe, CO

Built 2013 Load: 43.8 t ADT: 31,000

COUNTY ROAD 804

Good

Over: VOGEL CANYON

2.6 MI SW OF SH 109, Otero, CO

Built 1998 Load: 43.8 t ADT: 24

152ND AVENUE

Good

Over: BIG DRY CREEK

BTWN WASHINGTON/YORK ST, Adams, CO

Built 2001 Load: 43.8 t ADT: 5,431

USFS ROAD 211

Good

Over: GOOSE CREEK

AT GOOSE CREEK CAMPGROUND, Jefferson, CO

Built 1962 Load: 43.9 t ADT: 31

COUNTY ROAD JJ.5

Good

Over: SMITH ARROYO

.8 MI S OF SH 50, Otero, CO

Built 2003 Load: 43.9 t ADT: 135

County Road 37

Good

Over: New Cache La Poudre Cana

0.1 Mi North of ST HWY 39, Weld, CO

Built 1986 Load: 43.9 t ADT: 691

SH 7 ML

Good

Over: SOUTH PLATTE RIVER

W. EDGE OF BRIGHTON, Adams, CO

Built 2009 Load: 44.0 t ADT: 16,000

RAMP TO I 70 EBND

Good

Over: RAMP TO I 70 WBND R

MOUSETRAP IN DENVER, Denver, CO

Built 1993 Load: 44.0 t ADT: 60,500

104TH AVE

Good

Over: BIG DRY CREEK

.7 MI W OF SHERIDAN BLVD, Jefferson, CO

Built 1991 Load: 44.0 t ADT: 25,844

WABASH STREET

Good

Over: CHERRY CREEK

0.5 MI S. of ILIFF, Arapahoe, CO

Built 2010 Load: 44.1 t ADT: 7,228

I 76 ML WBND

Good

Over: FARM ROAD

4.5 MI SW OF STERLING EXT, Logan, CO

Built 2003 Load: 44.1 t ADT: 4,250

SH 257 ML

Good

Over: US 34 BYPASS

8 MI W OF GREELEY, Weld, CO

Built 1999 Load: 44.1 t ADT: 8,800

UPTOWN AVE.

Good

Over: US 36 ML

1.5 MI S of SH128, Broomfield, CO

Built 2014 Load: 44.1 t ADT: 9,653

SB I25 ML

Good

Over: SB SH21 RAMP

SH21 AND I25 INT, El Paso, CO

Built 2021 Load: 44.1 t ADT: 66,000

SH 266 ML

Good

Over: HOLBROOK CANAL

2.6 MI NE OF ROCKY FORD, Otero, CO

Built 2013 Load: 44.1 t ADT: 380

Stage Coach

Good

Over: Little Thompson River

1 Mile N of N St Vrain Dr, Larimer, CO

Built 2019 Load: 44.1 t ADT: 331

IRR# COUNTY RD 310

Good

Over: FLORIDA RIVER

.3 MI SE OF SH 550, La Plata, CO

Built 1977 Load: 44.1 t ADT: 2,119

COUNTY ROAD V.8

Good

Over: BIG SALT WASH

.1 MI E of 16 ROAD, Mesa, CO

Built 2018 Load: 44.1 t ADT: 14

CR 15A/MIDNIGHT M

Good

Over: CASTLE CREEK

JUST E OF CR 15, Pitkin, CO

Built 1999 Load: 44.1 t ADT: 67

S BEAVER CRK RD

Good

Over: SOUTH BOULDER CREEK

S BEAVER CK RD AT SH72, Gilpin, CO

Built 1995 Load: 44.2 t ADT: 798

CR 230/BURNT MILL

Good

Over: ST. CHARLES RIVER

JUST S OF WATER BARREL, Pueblo, CO

Built 1988 Load: 44.2 t ADT: 159

RAMP TO SH 121 ML

Good

Over: CLEAR CREEK R

I70 WB TO SH121, Jefferson, CO

Built 1980 Load: 44.3 t ADT: 92,000

I 76 ML WBND

Good

Over: COUNTY ROAD

TESTING, Morgan, CO

Built 2005 Load: 44.4 t ADT: 8,000

CHEYENNE CANYON RD

Good

Over: NORTH CHEYENNE CREEK

1.4 MI W EVANS AVENUE, El Paso, CO

Built 2022 Load: 44.4 t ADT: 1,566

I 70 SERVICE RD

Good

Over: DRAW

5.3 MI E OF JCT 36 BYERS, Arapahoe, CO

Built 2022 Load: 44.4 t ADT: 50

County Road 126

Good

Over: Fourmile Creek

W. OF CR 117, Garfield, CO

Built 2014 Load: 44.4 t ADT: 1,368

US 24-PLATTE AVE

Good

Over: SH 21-POWERS BLVD

PLATTE/POWERS-CO SPRINGS, El Paso, CO

Built 2000 Load: 44.4 t ADT: 40,000

County Road 47

Good

Over: Little Thomson River

0.1 Mi W of SH36, Larimer, CO

Built 2015 Load: 44.4 t ADT: 277

TOUR LOOP

Good

Over: First Creek

1.6 MI N OF 6TH AVE, Adams, CO

Built 2011 Load: 44.5 t ADT: 75

County Road 620

Good

Over: Colorado River

0.1 Mi East of US Hwy 34, Grand, CO

Built 1989 Load: 44.5 t ADT: 224

5th Street

Good

Over: Yampa River

20 ft S of Yampa Street, Routt, CO

Built 1989 Load: 44.5 t ADT: 4,967

SH 52 ML

Good

Over: FULTON DITCH

1.8 MI E OF JCT US 85 BYP, Weld, CO

Built 1971 Load: 44.5 t ADT: 11,000

HOV RAMP

Good

Over: I25 ACCESS

MEDIAN I25 ML & SH 22, Adams, CO

Built 1993 Load: 44.5 t ADT: 242,000

Remington Street

Good

Over: Spring Creek

Remington St/Spring Park, Larimer, CO

Built 1997 Load: 44.5 t ADT: 1,698

County Road 5

Good

Over: Little Thompson River

0.1 Mi N of Co Rd 42, Weld, CO

Built 2000 Load: 44.5 t ADT: 337

COUNTY ROAD 1700

Good

Over: UNCOMPAHGRE RIVER

.3 MI N OF CR D25 ROAD, Delta, CO

Built 2001 Load: 44.6 t ADT: 676

136TH AVENUE

Good

Over: I-25 ML

136TH AVE OVER I-25, Adams, CO

Built 2004 Load: 44.6 t ADT: 22,524

COUNTY ROAD 5800

Good

Over: F G LATERAL CANAL

.25 MI N OF SH 348, Montrose, CO

Built 2021 Load: 44.7 t ADT: 189

County Road 24

Good

Over: Priest Creek

0.4 Mi E of US Hwy 40, Routt, CO

Built 1998 Load: 44.7 t ADT: 108

County Road 205

Good

Over: Yampa River

0.3 Mi So of US Hwy 40, Routt, CO

Built 2006 Load: 44.7 t ADT: 475

COUNTY ROAD 54

Good

Over: BIG TIMBER CREEK

.3 MI S OF CR AA, Cheyenne, CO

Built 2010 Load: 44.7 t ADT: 25

I 25 ML SBND

Good

Over: WELD COUNTY ROAD 20

3 MI N OF SH 52-DACONO, Weld, CO

Built 2006 Load: 44.7 t ADT: 45,500

I70 ML EB

Good

Over: WASHINGTON ST/S PLATTE R

DENVER, Denver, CO

Built 2001 Load: 44.7 t ADT: 78,500

E-470 RAMP F

Good

Over: I25 NWP

SB I25 TO SB E470, Adams, CO

Built 2003 Load: 44.7 t ADT: 6,600

I 25 ML SBND

Good

Over: EAST PLUM CREEK

0.6 MI. S. CASTLE ROCK BU, Douglas, CO

Built 2010 Load: 44.7 t ADT: 41,000

US 24 ML

Good

Over: UP RR

0.05 MI NE OF JCT US 285, Chaffee, CO

Built 2014 Load: 44.7 t ADT: 7,800

Showing 7,701-7,750 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.