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

WASHINGTON ST

Fair

Over: CLEAR CREEK

JUST S OF 70TH AVENUE, Adams, CO

Built 1970 Load: 35.7 t ADT: 17,956

US 6 ML WBND

Fair

Over: STERLING CANAL NO 1

SW SIDE OF STERLING, Logan, CO

Built 1961 Load: 35.7 t ADT: 2,150

US 6 ML

Fair

Over: DRAW

18.5 MI E OF STERLING, Logan, CO

Built 1962 Load: 35.7 t ADT: 1,600

BROMLEY LANE

Fair

Over: FULTON DITCH

1.5 MILES EAST OF SH 85, Adams, CO

Built 1996 Load: 35.7 t ADT: 13,417

SH 39 ML

Fair

Over: BIJOU CANAL

4.9 MI NO OF JCT US 34, Morgan, CO

Built 1948 Load: 35.7 t ADT: 640

COUNTY ROAD 175

Fair

Over: UTE CREEK

3.6 MI NE of SH 291, Chaffee, CO

Built 1990 Load: 35.7 t ADT: 136

COUNTY ROAD 16

Fair

Over: N. CONEJOS RIVER

2.4 MI N OF CR H, Conejos, CO

Built 1995 Load: 35.7 t ADT: 77

SH 52 ML

Fair

Over: LOST CREEK

3 MI E OF JCT SH 79, Weld, CO

Built 1958 Load: 35.7 t ADT: 650

COUNTY ROADS

Fair

Over: I 70 ML

3.3 MI E OF JCT US 40, Clear Creek, CO

Built 1965 Load: 35.7 t ADT: 1,066

I 76 ML EBND

Fair

Over: BNSF RR RTD Light Rail

.2 MI W OF PECOS STREET, Adams, CO

Built 1989 Load: 35.7 t ADT: 38,500

EDISON ROAD

Fair

Over: POND CREEK

0.1 MI S OF TROGILO ROAD, El Paso, CO

Built 1992 Load: 35.7 t ADT: 65

I 70 ML WBND

Fair

Over: COLORADO RIVER

DOTSERO, Eagle, CO

Built 1980 Load: 35.7 t ADT: 8,500

US 285 ML

Fair

Over: NORTH TURKEY CREEK ROAD

4.4 MILES SW OF SH 8, Jefferson, CO

Built 1995 Load: 35.7 t ADT: 26,000

COUNTY ROAD 28

Fair

Over: I 70 ML

6.5 MI E OF JCT US 24, Lincoln, CO

Built 1975 Load: 35.7 t ADT: 224

I 70 ML EBND

Fair

Over: S FK REPUBLICAN RIVER

4.2 MI E OF ARRIBA, Lincoln, CO

Built 1975 Load: 35.7 t ADT: 4,200

SH 114 ML

Fair

Over: COCHETOPA CREEK

0.4 MI SE OF JCT US 50, Gunnison, CO

Built 1992 Load: 35.7 t ADT: 470

County Road 53

Fair

Over: Larson Draw

0.3 Mi S of Co. Rd 48, Logan, CO

Built 1991 Load: 35.7 t ADT: 48

County Road 67

Fair

Over: South Platte River

1.6 Mi N of I-76, Logan, CO

Built 1996 Load: 35.7 t ADT: 322

US 350 ML

Fair

Over: DRAW

5.3 MI NE OF THATCHER, Las Animas, CO

Built 1987 Load: 35.7 t ADT: 470

County Road 32.5

Fair

Over: Farmers Independent Ditc

0.6 Mi E of Co Rd 23, Weld, CO

Built 2004 Load: 35.7 t ADT: 2,572

ASPEN STREET

Fair

Over: BESSEMER DITCH

JUST N OF LASALLE RD, Pueblo, CO

Built 2001 Load: 35.7 t ADT: 2,835

County Road 77

Fair

Over: White River

0.5 Mi E of St Hwy 64, Rio Blanco, CO

Built 1955 Load: 35.7 t ADT: 93

County Road 42

Fair

Over: Platte Valley Canal

0.6 Mi E of Co Rd 41, Weld, CO

Built 1959 Load: 35.7 t ADT: 221

County Road 47

Fair

Over: Owl Creek Canal

1.1 Mi N of Co Rd 76, Weld, CO

Built 1960 Load: 35.7 t ADT: 124

County Road 76

Fair

Over: Larimer and Weld Canal

0.8 Mi E of Co Rd 29, Weld, CO

Built 1985 Load: 35.7 t ADT: 259

SH 14 ML

Fair

Over: JOE WRIGHT CREEK

4.6 MI E OF JACKSON-LARIM, Larimer, CO

Built 1976 Load: 35.8 t ADT: 490

I 76 ML EBND

Fair

Over: BNSF RR

35 MI NE OF JCT US 34, Logan, CO

Built 1966 Load: 35.8 t ADT: 4,150

BUCKLEY ROAD

Fair

Over: PINEY CREEK

JUST S OF ORCHARD ROAD, Arapahoe, CO

Built 2003 Load: 35.8 t ADT: 18,201

CHARLOTTE PKWY

Fair

Over: WEST SAND CREEK TRIB.

0.35 MI N OF BARNES ROAD, El Paso, CO

Built 1987 Load: 35.8 t ADT: 5,188

WASHINGTON ST

Fair

Over: CHERRY CREEK

WASHINGTON AT SPEER BLVD, Denver, CO

Built 1929 Load: 35.8 t ADT: 4,392

SH 157 ML

Fair

Over: BOULDER CREEK

JUST N. OF HWY 7, Boulder, CO

Built 1981 Load: 35.8 t ADT: 43,000

I 70 ML WBND

Fair

Over: S FK REPUBLICAN RIVER

7.6 MI W OF FLAGLER, Lincoln, CO

Built 1975 Load: 35.8 t ADT: 4,200

US 24 ML

Fair

Over: DRAW

0.1 MI NE OF FALCON, El Paso, CO

Built 2000 Load: 35.8 t ADT: 17,000

US 50 ML

Fair

Over: URINE CREEK

3.9 MI E OF JCT SH 115, Fremont, CO

Built 1977 Load: 35.8 t ADT: 9,300

SH 149 ML

Fair

Over: NORTH FORK RIO GRANDE

0.9 MI NW OF JCT US 160, Rio Grande, CO

Built 1993 Load: 35.8 t ADT: 1,900

County Road 73

Fair

Over: St. Louis Creek

0.9 Mi West of US Hwy 40, Grand, CO

Built 1981 Load: 35.9 t ADT: 817

WB 56TH AVE

Fair

Over: PEDESTRIAN PATH

0.5 MI W OF HAVANA ST, Denver, CO

Built 2013 Load: 35.9 t ADT: 22,176

SH 26 ML ALAMEDA

Fair

Over: I 25 ML

IN DENVER I25, Denver, CO

Built 2012 Load: 35.9 t ADT: 42,000

SH6 M S. FRNTGE.RD

Fair

Over: COTTONWOOD CREEK SR

3.8 MI E OF PARACHUTE, Garfield, CO

Built 1981 Load: 35.9 t ADT: 667

US 285 ML

Fair

Over: N FK SOUTH PLATTE RVR

8.8 MI N.E. KENOSHA PASS, Park, CO

Built 1989 Load: 35.9 t ADT: 5,900

S REED ST

Fair

Over: SANDERSON GULCH

0.1 MI S OF S PIERCE WAY, Jefferson, CO

Built 2017 Load: 35.9 t ADT: 666

County Road 25

Fair

Over: Pawnee Creek

0.8 Mi N of Co Rd 20., Logan, CO

Built 1989 Load: 35.9 t ADT: 431

US 160 ML

Fair

Over: ANIMAS RIVER

0.9 MI E OF JCT SH 550, La Plata, CO

Built 1974 Load: 35.9 t ADT: 30,000

US 285 ML

Fair

Over: ALAMOSA CREEK

11.5 MI S OF ALAMOSA, Conejos, CO

Built 1959 Load: 35.9 t ADT: 5,200

County Road 9

Fair

Over: Highline Canal

0.3 Mi. No. of Co. Rd. 28, Sedgwick, CO

Built 1987 Load: 35.9 t ADT: 16

County Road 64

Fair

Over: Lone Tree Creek

0.4 Mi E of Co Rd 49, Weld, CO

Built 1986 Load: 35.9 t ADT: 84

FSR 950

Fair

Over: N.CRESTONE CR.FLOOD CHNL

1.4 MI N OF CRESTONE, Saguache, CO

Built 1975 Load: 36.0 t ADT: 70

CHASE STREET

Fair

Over: NORTH CLEAR CREEK

N OF SILVERHAWK CASINO, Gilpin, CO

Built 1994 Load: 36.0 t ADT: 166

US 36 ML

Fair

Over: LITTLE THOMPSON RIVER

11.1 MI SE OF JCT SH 7, Larimer, CO

Built 1937 Load: 36.0 t ADT: 6,500

FIRST STREET

Fair

Over: ARKANSAS RIVER

JUST SOUTH SH 50, Fremont, CO

Built 1986 Load: 36.0 t ADT: 2,377

Showing 3,601-3,650 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.