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 40 ML

Good

Over: YAMPA RIVER

5.0 MI EAST OF HAYDEN, Routt, CO

Built 1989 Load: 36.8 t ADT: 5,100

COUNTY ROAD FF

Good

Over: MONTE VISTA CANAL

.7 MI W OF SH 368, Conejos, CO

Built 1990 Load: 36.8 t ADT: 118

Co Rd 20(W 1st St)

Good

Over: Big Thompson River

0.5 Mi E of Taft Avenue, Larimer, CO

Built 2001 Load: 36.8 t ADT: 4,384

US 285 ML

Good

Over: RIO GRANDE

N.EDGE OF MONTE VISTA, Rio Grande, CO

Built 1971 Load: 36.8 t ADT: 4,500

136TH AVENUE

Good

Over: BIG DRY CREEK

0.6 MI E OF I-25, Adams, CO

Built 2004 Load: 36.8 t ADT: 22,524

152ND AVENUE

Good

Over: HOFFMAN CREEK

0.7 MI E OF PROSPECT WAY, Adams, CO

Built 1995 Load: 36.9 t ADT: 15

TWO RIVERS RD

Good

Over: FRYINGPAN RIVER

0.1 MI. SW OF MIDLAND AVE, Eagle, CO

Built 2006 Load: 36.9 t ADT: 3,101

N 49th St (Cr 51)

Good

Over: Left Hand Creek

0.5 Mi N of Co Rd 34, Boulder, CO

Built 1993 Load: 36.9 t ADT: 191

I 76 ML WBND

Good

Over: COUNTY ROAD 22

4 MI EAST OF FT MORGAN, Morgan, CO

Built 2005 Load: 36.9 t ADT: 8,000

ACADEMY BLVD

Good

Over: COTTONWOOD CREEK

0.2 MI. S. OF WOODMEN RD, El Paso, CO

Built 2018 Load: 36.9 t ADT: 22,514

US 40 ML

Good

Over: UP RR

E OF HOT SULPHUR SPRINGS, Grand, CO

Built 1987 Load: 36.9 t ADT: 3,400

I 76 ML EBND

Good

Over: LOWELL BLVD

1.04 MI E OF JCT SH 95, Adams, CO

Built 1986 Load: 36.9 t ADT: 39,500

I 76 ML WBND

Good

Over: LOWELL BLVD

1.06 MI E OF JCT SH95, Adams, CO

Built 1986 Load: 36.9 t ADT: 39,500

RAMP TO PECOS ST

Good

Over: BNSF RR RTD Light Rail

.2 MI W OF PECOS STREET, Adams, CO

Built 1989 Load: 36.9 t ADT: 77,000

SH 121 ML

Good

Over: US 36 ML

IN BROOMFIELD, Broomfield, CO

Built 2014 Load: 36.9 t ADT: 39,000

FAIRPLAY ROAD

Good

Over: BIG SANDY CREEK

0.6 MI N of SWEET ROAD, El Paso, CO

Built 1994 Load: 36.9 t ADT: 169

COUNTY ROAD 21

Good

Over: INDP RANCHMENS DITCH

0.4 MI N of HWY 6, Mesa, CO

Built 2016 Load: 36.9 t ADT: 1,229

County Road 23

Good

Over: Larimer and Weld Canal

At Inter with Co Rd 76, Weld, CO

Built 1995 Load: 36.9 t ADT: 2,412

County Road 70

Good

Over: Lone Tree Creek

0.45 Mi E of Co Rd 43, Weld, CO

Built 1983 Load: 36.9 t ADT: 333

160TH AVENUE

Good

Over: LOCAL DRAINAGE

0.3 MI E OF MANILA RD, Adams, CO

Built 1993 Load: 37.0 t ADT: 81

SABLE BLVD

Good

Over: SAND CREEK

JUST NORTH OF 28TH AVE, Adams, CO

Built 1975 Load: 37.0 t ADT: 9,902

SH 53 SERVICE RD.

Good

Over: 64TH ST DRAIN CANAL AR

JUST W OF 64TH/ BRDWY, Adams, CO

Built 1993 Load: 37.0 t ADT: 5,000

DEPEW STREET

Good

Over: LOCAL DRAINAGE

.1 MILE SO OF CANYON DR, Jefferson, CO

Built 1981 Load: 37.0 t ADT: 708

SH 71 ML

Good

Over: OTERO CANAL

0.4 MI NO OF JCT SH 10, Otero, CO

Built 1971 Load: 37.0 t ADT: 460

County Road MM

Good

Over: Sand Creek

1.55 Mi N of Co Rd 7, Yuma, CO

Built 1996 Load: 37.0 t ADT: 53

Broadlands Drive

Good

Over: Local Drainage

0.3 Mi N of 136th Ave, Broomfield, CO

Built 1997 Load: 37.1 t ADT: 1,465

BLACK FOREST ROAD

Good

Over: WEST FORK CHERRY CREEK

.9 MI N OF HODGEN ROAD, El Paso, CO

Built 1994 Load: 37.1 t ADT: 1,248

I 70 FRONTAGE RD

Good

Over: DRY CREEK SR

2.5 MI OF RIFLE, Garfield, CO

Built 1975 Load: 37.1 t ADT: 372

I 70 ML WBND

Good

Over: BLM ACCESS ROAD

8 MI W. OF PARACHUTE, Garfield, CO

Built 1982 Load: 37.1 t ADT: 9,000

County Road 37

Good

Over: Cedar Creek

0.7 Mi S of Co Rd 46, Logan, CO

Built 1987 Load: 37.1 t ADT: 434

SH 109 ML

Good

Over: MUDDY CREEK

31 MI SOUTH OF LA JUNTA, Las Animas, CO

Built 1974 Load: 37.1 t ADT: 350

STROH ROAD

Good

Over: CHERRY CREEK

0.3 MI WEST OF HWY 83, Douglas, CO

Built 1987 Load: 37.1 t ADT: 5,189

NFSR 350

Good

Over: TROUT CREEK

0.1 MI E OF SH 67, Douglas, CO

Built 1992 Load: 37.2 t ADT: 123

IRR# COUNTY RD 119

Good

Over: LA PLATA RIVER & CANAL

1.6 MI W OF SH 140, La Plata, CO

Built 1990 Load: 37.2 t ADT: 202

RAMP EB PROBY PKWY

Good

Over: RAMP TO SB ACADEMY

COLORADO SPRINGS, El Paso, CO

Built 2012 Load: 37.2 t ADT: 866

COUNTY ROAD 122

Good

Over: SOUTH TURKEY CREEK

3.8 MI SOUTH OF TINYTOWN, Jefferson, CO

Built 1999 Load: 37.2 t ADT: 931

RAMP TO I 25 NBND

Good

Over: CLEAR CREEK R

.2 MI N 76; .1 MI E I-25, Adams, CO

Built 1992 Load: 37.2 t ADT: 121,000

CO RD 12

Good

Over: RUBY ANTHRACITE CREEK

2 MI S of SH 133, Gunnison, CO

Built 1993 Load: 37.2 t ADT: 370

SH 133 ML

Good

Over: UP RR

3.5 MI. NE. OF PAONIA, Delta, CO

Built 1991 Load: 37.2 t ADT: 1,500

COUNTY ROAD 43.5

Good

Over: COON HOLLOW WASH

2.5 MI SW ON CR 44, Mesa, CO

Built 1996 Load: 37.2 t ADT: 16

County Road 2

Good

Over: Weldon Valley Ditch

0.8 Mi North of Co Rd X, Morgan, CO

Built 1997 Load: 37.2 t ADT: 56

COUNTY ROAD 337A

Good

Over: RIO BLANCO RIVER

0.1 MI S. of SH84, Archuleta, CO

Built 2015 Load: 37.3 t ADT: 196

FOUNTAIN CREEK

Good

Over: COLORADO AVENUE

W OF S. COLUMBIA RD., El Paso, CO

Built 2019 Load: 37.3 t ADT: 12,015

LORRAINE ROAD

Good

Over: WEST CHERRY CREEK

0.3 MI W OF HIGHWAY 83, Douglas, CO

Built 1992 Load: 37.3 t ADT: 103

CONIFR.TWN.CNTR.DR

Good

Over: SH 285 ML

Conifer, Jefferson, CO

Built 2005 Load: 37.3 t ADT: 3,385

US 40 ML

Good

Over: AGATE CREEK

.4 MI W. OF AGATE, Elbert, CO

Built 2022 Load: 37.3 t ADT: 120

COUNTY ROAD 2

Good

Over: ROCKY FORD HIGHLINE CANA

3.4 MI SSW OF FOWLER, Otero, CO

Built 1996 Load: 37.3 t ADT: 213

COUNTY ROAD EE.25

Good

Over: ROCKY FORD CANAL

0.9 MI SE of Rocky Ford, Otero, CO

Built 1995 Load: 37.3 t ADT: 785

County Road 103

Good

Over: Middle St. Vrain Creek

200 Ft S of Raymond Store, Boulder, CO

Built 1993 Load: 37.4 t ADT: 112

US 36 ML

Good

Over: WEST BIJOU CREEK

1 MI W OF BYERS, Arapahoe, CO

Built 1996 Load: 37.4 t ADT: 3,400

Showing 7,101-7,150 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.