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: RED DIRT CREEK

_, Grand, CO

Built 1994 Load: 32.7 t ADT: 2,100

KNOX COURT

Good

Over: LAKEWOOD GULCH

JUST N OF 12TH AVE, Denver, CO

Built 2014 Load: 32.7 t ADT: 3,320

US 85 ML

Good

Over: Platte Valley Canal

2.3 MI S OF SH 66, Weld, CO

Built 1991 Load: 32.7 t ADT: 20,000

SH 52 ML

Good

Over: BOX ELDER CREEK

2.7 MI E OF JCT I-76, Weld, CO

Built 1965 Load: 32.7 t ADT: 2,900

I 76 ML

Good

Over: CO RD 1

3 MI SW OF WIGGINS, Morgan, CO

Built 1958 Load: 32.7 t ADT: 14,000

PEORIA ST

Good

Over: MONTBELLO DITCH

PEORIA AT 49TH, Denver, CO

Built 1964 Load: 32.7 t ADT: 23,175

12TH AVE

Good

Over: WESTERLY CREEK

ALLEY E OF XANTHIA ST, Denver, CO

Built 1983 Load: 32.7 t ADT: 419

TOWER ROAD

Good

Over: FIRST CREEK

0.1 MILE SOUTH OF 56TH AV, Denver, CO

Built 2009 Load: 32.7 t ADT: 21,155

ARGONNE STREET

Good

Over: BLUE GRAMA CHANNEL

N of ARGONNE AND 61ST, Denver, CO

Built 2019 Load: 32.7 t ADT: 4,047

NORTH CEYLON ST

Good

Over: BLUE GRAMA CHANNEL

N of ARGONNE & 61ST, Denver, CO

Built 2019 Load: 32.7 t ADT: 4,047

HAUL ROAD

Good

Over: SCOTTSBURG ROAD

S OF TERMINAL BLDG, Denver, CO

Built 2010 Load: 32.7 t

SE 2ND LEVEL

Good

Over: PARKING LOT

EAST OF NEW PARKING STR, Denver, CO

Built 2017 Load: 32.7 t ADT: 1,139

SE 4/5TH LVL PARK

Good

Over: 84TH AVE.

BTWN SE GARAGES, Denver, CO

Built 2017 Load: 32.7 t ADT: 348

DUNKIRK STREET

Good

Over: SECOND CREEK

0.4 MILE NORTH OF 64th AV, Denver, CO

Built 2006 Load: 32.7 t ADT: 876

Brown Rd

Good

Over: Infantry Creek

Butts and Bad Toelz RDs, El Paso, CO

Built 2016 Load: 32.7 t ADT: 3,500

EMERGENCY ACCESS

Good

Over: DRAINAGE DITCH

SW OF DEER TR HIGH SCHOOL, Arapahoe, CO

Built 2018 Load: 32.7 t ADT: 1

COUNTY ROAD 4065

Good

Over: FIRE MOUNTAIN CANAL

.6 MI N OF SH 133, Delta, CO

Built 1981 Load: 32.7 t ADT: 248

CR D/25 MESA ROAD

Good

Over: ROUBIDEAU CREEK

2.8 MI W OF SH 348, Delta, CO

Built 1987 Load: 32.7 t ADT: 198

COUNTY ROAD 38

Good

Over: FISH CREEK

13 MI NE OF SH 145, Dolores, CO

Built 1995 Load: 32.7 t ADT: 136

WATERTON ROAD

Good

Over: HIGHLINE CANAL

0.5 MI FROM WATERTON CANY, Douglas, CO

Built 2009 Load: 32.7 t ADT: 13,977

RAMPART RANGE ROAD

Good

Over: HIGHLINE CANAL

0.1 MI S OF TITAN ROAD, Douglas, CO

Built 2007 Load: 32.7 t ADT: 12,559

THREE SPRINGS BLVD

Good

Over: TRAVERSE WASH

0.6 MI N of US160, La Plata, CO

Built 2004 Load: 32.7 t ADT: 12,427

CONFLUENCE AVE

Good

Over: TRAVERSE WASH

0.8 MI N of US160, La Plata, CO

Built 2004 Load: 32.7 t ADT: 2,588

US 40 ML

Good

Over: GAME CROSSING

8 MILES WEST OF EMPIRE, Clear Creek, CO

Built 2005 Load: 32.7 t ADT: 6,600

COUNTY ROAD 122

Good

Over: SOUTH TURKEY CREEK

2 MI SOUTH OF TINYTOWN, Jefferson, CO

Built 2000 Load: 32.7 t ADT: 1,690

SH 95 ML

Good

Over: LITTLE DRY CREEK TRAIL

500 ft N of 76th Ave, Adams, CO

Built 2001 Load: 32.7 t ADT: 38,000

SH 95 ML

Good

Over: PEDESTRIAN UNDERPASS

JUST S OF US36, Jefferson, CO

Built 2023 Load: 32.7 t ADT: 31,000

EB US 36 OFF RAMP

Good

Over: EB BUS RAMP

McCASLIN and US 36, Boulder, CO

Built 2016 Load: 32.7 t ADT: 26,000

S. 4th Ave.

Good

Over: FULTON CANAL

0.5 MI N. of 136th Ave., Adams, CO

Built 2007 Load: 32.7 t ADT: 9,408

YORK STREET

Good

Over: I70 ML

0.5 MI W of STEELE, Denver, CO

Built 2021 Load: 32.7 t ADT: 5,970

I 270 ML EBND

Good

Over: I 70 ML

DENVER, Denver, CO

Built 2019 Load: 32.7 t ADT: 73,000

ACCESS ROAD

Good

Over: RAMP TO I 25 NBND R

ESIDE OF I25-I76 INT., Adams, CO

Built 1993 Load: 32.7 t

SH 53 SERVICE RD.

Good

Over: 64TH ST DRAIN CANAL AR

.1 MI W OF 64TH & BRODWAY, Adams, CO

Built 1993 Load: 32.7 t ADT: 5,000

E-470 NB

Good

Over: Coal Creek

18.44 MI FROM I25, Arapahoe, CO

Built 1997 Load: 32.7 t ADT: 19,715

Chambers Road NB

Good

Over: E-470

3.54 MI FROM I 25, Douglas, CO

Built 1990 Load: 32.7 t ADT: 2,000

Chambers Road SB

Good

Over: E-470

3.54 MI FROM I 25, Douglas, CO

Built 2004 Load: 32.7 t ADT: 2,000

E-470 ML

Good

Over: Local Drainage

42.45 MI FROM I25, Adams, CO

Built 2002 Load: 32.7 t ADT: 36,702

COUNTY ROAD 293

Good

Over: TURKEY CREEK

0.14 M N OF EAGLE ST, Eagle, CO

Built 1992 Load: 32.7 t ADT: 86

COUNTY ROAD 301

Good

Over: SWEETWATER CREEK

6.9 MI N OF DOTSERO, Eagle, CO

Built 1992 Load: 32.7 t ADT: 523

CHIPITA PARK RD

Good

Over: FOUNTAIN CREEK

.1 MI NE OF FOUNTAIN ROAD, El Paso, CO

Built 2001 Load: 32.7 t ADT: 1,132

JUDGE ORR RD

Good

Over: BLK SQUIRREL CRK TRIB

0.36 MI. W. OF US24, El Paso, CO

Built 2019 Load: 32.7 t ADT: 3,001

SAKALA ROAD

Good

Over: BIG SANDY CREEK TRIB

0.7 MI N OF RAMAH ROAD, El Paso, CO

Built 2000 Load: 32.7 t ADT: 86

BERRIDGE RD.

Good

Over: N FORK HORSE CREEK

0.8 MI N OF FUNK RD, El Paso, CO

Built 2012 Load: 32.7 t ADT: 36

LOOMIS AVE

Good

Over: FISHERS CANYON CREEK

.6 MI SW OF CRESTRIDGE AV, El Paso, CO

Built 1980 Load: 32.7 t ADT: 811

BLUE GILL DR

Good

Over: UNKNOWN DRAINAGE

0.5 MI SW OF JUDGE ORA, El Paso, CO

Built 2012 Load: 32.7 t ADT: 279

STAPLETON ROAD

Good

Over: BLK SQUIRREL CRK TRIB

0.5 MI. W OF US24, El Paso, CO

Built 2019 Load: 32.7 t ADT: 601

LAMBERT DR

Good

Over: UNKNOWN DRAINAGE

0.2 MI S OF STAPLETON, El Paso, CO

Built 2011 Load: 32.7 t ADT: 768

ACADEMY BLVD SB

Good

Over: WESTMEADOW DRIVE

1.5 MI W OF I-25, El Paso, CO

Built 2008 Load: 32.7 t ADT: 10,931

County Road 1

Good

Over: Coal Creek

300 Ft N of Bixler Blvd, Weld, CO

Built 1996 Load: 32.7 t ADT: 5,198

I 70 ML EBND

Good

Over: UP RR COLORADO RIVER

EAST EXIT HANGING LAKE TU, Garfield, CO

Built 1991 Load: 32.7 t ADT: 8,500

Showing 6,351-6,400 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.