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

US 50 ML WBND

Fair

Over: DRY CREEK

IN PUEBLO NEAR E EDGE, Pueblo, CO

Built 1958 Load: 42.4 t ADT: 3,850

EATON ST

Fair

Over: SLOANS LAKE DRAINAGE

.1 MI S OF 18TH AVE, Jefferson, CO

Built 1982 Load: 42.4 t ADT: 753

US 385 ML

Fair

Over: SOUTH PLATTE RIVER

0.8 MI N OF I 76, Sedgwick, CO

Built 1956 Load: 42.5 t ADT: 1,600

US 385 ML

Fair

Over: SOUTH PLATTE RIVER

0.7 MI N OF JCT I 76, Sedgwick, CO

Built 1956 Load: 42.5 t ADT: 1,600

US 385 ML

Fair

Over: SOUTH PLATTE RIVER

0.4 MI N OF JCT I 76, Sedgwick, CO

Built 1956 Load: 42.5 t ADT: 1,600

PEORIA STREET

Fair

Over: BARANMOR DITCH

PEORIA and BARANMOR PKWY, Adams, CO

Built 2014 Load: 42.5 t ADT: 25,984

Pearl Parkway

Fair

Over: North Goose Creek

0.6 M E of Foothills Pkwy, Boulder, CO

Built 1986 Load: 42.5 t ADT: 8,372

PERRY STREET

Fair

Over: SELLARS GULCH

0.1 MI S OF SECOND STREET, Douglas, CO

Built 1998 Load: 42.5 t ADT: 8,618

COUNTY ROAD 111

Fair

Over: SOUTH ARKANSAS RIVER

1.9 MI SW OF SALIDA, Chaffee, CO

Built 1991 Load: 42.5 t ADT: 513

SH 52 ML

Fair

Over: LOWER BOULDER DITCH

0.6 MI E OF JCT I 25, Weld, CO

Built 1960 Load: 42.5 t ADT: 18,000

EB 56TH AVENUE

Fair

Over: FIRST CREEK

.2 MILES WEST OF TOWER RD, Denver, CO

Built 2000 Load: 42.5 t ADT: 14,732

76TH AVENUE

Fair

Over: NB PENA BLVD

4.2 MI EAST OF E-470, Denver, CO

Built 1992 Load: 42.5 t ADT: 55,210

BUCKLEY ROAD

Fair

Over: I 76 ML BNSF RR

BUCKLEY RD @ I76 and BN, Adams, CO

Built 1994 Load: 42.5 t ADT: 4,513

US 24 ML

Fair

Over: DRAW

1.6 MI E OF MATHESON, Elbert, CO

Built 1933 Load: 42.5 t ADT: 3,000

COUNTY RD 18.7

Fair

Over: WET CANYON CREEK

0.1 MI E OF CR 31.9, Las Animas, CO

Built 1995 Load: 42.5 t ADT: 23

20TH ST HOV

Fair

Over: ROADS/RIVER/RR

NORTH OF 20TH ST, Denver, CO

Built 1994 Load: 42.6 t ADT: 11,012

I 25 ML

Fair

Over: STORM DRAINAGE

0.1 MI. N. OF 20TH ST., Denver, CO

Built 1993 Load: 42.6 t ADT: 242,000

COUNTY ROAD 12

Fair

Over: RED GULCH

0.4 MI N OF COTOPAXI, Fremont, CO

Built 1985 Load: 42.6 t ADT: 419

County Road 344

Fair

Over: Divide Cr (Porter Ditch)

4.0 Mi SE of Co Road 42, Garfield, CO

Built 1995 Load: 42.6 t ADT: 20

Deerwood Drive

Fair

Over: Oligarchy Ditch

20 Ft W of Co Rd 1, Boulder, CO

Built 2000 Load: 42.6 t ADT: 1,709

County Road KK.75

Fair

Over: Surveyor Creek

0.25 Mi N. of Co Rd 40.5, Washington, CO

Built 1989 Load: 42.6 t ADT: 40

COUNTY ROAD L.7

Fair

Over: EL POSO CREEK

JUST W OF CR 25.5, Costilla, CO

Built 1997 Load: 42.7 t ADT: 78

QUEENSBURG ROAD

Fair

Over: SCOTTSBURG ROAD

S OF TERMINAL BLDG, Denver, CO

Built 1992 Load: 42.7 t ADT: 27,409

US 36 ML

Fair

Over: PECOS STREET

IN WESTMINSTER, Adams, CO

Built 2001 Load: 42.7 t ADT: 129,000

I 25 ML

Fair

Over: CLYDESDALE LN

9.5 MI N OF CASTLE ROCK, Douglas, CO

Built 1999 Load: 42.7 t ADT: 116,000

E. ILIFF AVE.

Fair

Over: HIGHLINE CANAL

0.45 MI W. OF PARKER ROAD, Arapahoe, CO

Built 1977 Load: 42.8 t ADT: 38,491

C.RD TRINCHERA

Fair

Over: SANGRE DE CRISTO CREEK

2.1 MI E OF FORT GARLAND, Costilla, CO

Built 1989 Load: 42.8 t ADT: 531

EB 56TH AVE

Fair

Over: PEDESTRIAN PATH

0.5 MI W OF HAVANA ST, Denver, CO

Built 1995 Load: 42.8 t ADT: 19,982

Drake Road

Fair

Over: Spring Creek

0.0 Mi E of Hanover Dr, Larimer, CO

Built 1997 Load: 42.8 t ADT: 17,741

Hover Road

Fair

Over: St. Vrain River

100 Ft S of 3rd Avenue, Boulder, CO

Built 1960 Load: 42.8 t ADT: 26,762

TWENTY MILE ROAD

Fair

Over: SULPHUR GULCH

JUST SOUTH OF MAIN STREET, Douglas, CO

Built 2000 Load: 42.8 t ADT: 12,682

COUNTY ROAD 11

Fair

Over: AMITY CANAL

1.0 MI NORTH SH 196, Prowers, CO

Built 1970 Load: 42.8 t ADT: 55

County Road 36

Fair

Over: Platte Valley Canal

0.8 Mi E of Co Rd 29, Weld, CO

Built 1981 Load: 42.8 t ADT: 103

COUNTY ROAD DD

Fair

Over: SAND ARROYO

0.1 MI W OF CR 55, Baca, CO

Built 1997 Load: 42.9 t ADT: 40

COUNTY ROAD 10

Fair

Over: EASTDALE NO.1 CANAL

2.3 MI S OF CR H, Costilla, CO

Built 2002 Load: 42.9 t ADT: 27

22ND ST RAMP

Fair

Over: COORS FLD LOT/RAILROAD

JUST W OF WAZEE STREET, Denver, CO

Built 1994 Load: 42.9 t ADT: 30,064

I 70 ML WBND

Fair

Over: SWEETWATER CROSS ROAD

DOTSERO INTERCHANGE, Eagle, CO

Built 1980 Load: 42.9 t ADT: 8,500

EVANS AVE.

Fair

Over: I 25 ML

IN DENVER, Denver, CO

Built 2004 Load: 42.9 t ADT: 28,486

DEBEQUE CUTOFF RD

Fair

Over: I 70 ML

DEBEQUE INTER., Mesa, CO

Built 1980 Load: 42.9 t ADT: 2,778

US 385 ML

Fair

Over: DRAW

7.2 MI S OF JCT US 40, Cheyenne, CO

Built 1961 Load: 42.9 t ADT: 730

I 25 ML

Fair

Over: DRAW

10.3 MI NO OF JCT SH 239, Las Animas, CO

Built 1969 Load: 42.9 t ADT: 12,000

POTOMAC ST

Fair

Over: CHERRY CREEK TRIB

AT BRONCOS PKWY, Arapahoe, CO

Built 1986 Load: 43.0 t ADT: 21,329

I 25 ML NBND

Fair

Over: LARIMER COUNTY CANAL

5.2 MI N OF JCT SH 14, Larimer, CO

Built 1950 Load: 43.0 t ADT: 14,000

COUNTY ROAD J

Fair

Over: TRIB. OF MUDDY CREEK

.5 MI SW OF CR 10, Bent, CO

Built 1992 Load: 43.0 t ADT: 10

I 25 ML SBND

Fair

Over: COTTONWOOD CREEK

1.8 MI S OF JCT SH 83, El Paso, CO

Built 2004 Load: 43.0 t ADT: 62,000

JERRY MURPHY ROAD

Fair

Over: SH 47 ML

IN PUEBLO, Pueblo, CO

Built 1977 Load: 43.0 t ADT: 12,734

County Road 28

Fair

Over: Louden Ditch

0.5 Mi E of Co Rd 17, Larimer, CO

Built 1977 Load: 43.0 t ADT: 11,797

NWP EB

Fair

Over: BNSF

7.68 MI FROM I-25, Broomfield, CO

Built 2002 Load: 43.0 t ADT: 12,000

NWP WB

Fair

Over: BNSF

7.68 MI FROM I-25, Broomfield, CO

Built 2002 Load: 43.0 t ADT: 12,000

EB MAINSTREET

Fair

Over: CHERRY CREEK

1.0 MI WEST OF HWY 83, Douglas, CO

Built 2000 Load: 43.0 t ADT: 13,212

Showing 4,351-4,400 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.