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

RAMP TO I 70 EBND

Good

Over: RAMP TO PENA BLVD NBND R

JUST E OF CHAMBERS ROAD, Adams, CO

Built 1993 Load: 28.1 t ADT: 54,000

US 385 ML

Good

Over: DRAW

0.1 MI S OF YUMA KIT CARS, Kit Carson, CO

Built 1978 Load: 28.1 t ADT: 740

SH 59 ML

Good

Over: S FK REPUBLICAN RIVER

4.2 MI N OF SEIBERT, Kit Carson, CO

Built 1969 Load: 28.1 t ADT: 640

CO RD 317

Good

Over: EAST RIVER

8.4 MI N OF CRSTD BUTTE, Gunnison, CO

Built 1978 Load: 28.1 t ADT: 290

COUNTY ROAD 611

Good

Over: HUERFANO RIVER

10.9 MI NW OF WALSENBURG, Huerfano, CO

Built 1999 Load: 28.1 t ADT: 10

COUNTY ROAD LE

Good

Over: VEGA CANAL

1.0 MI E OF RD 60.75, Mesa, CO

Built 1993 Load: 28.1 t ADT: 34

US 160 ML

Good

Over: Draw

18 Miles W of KIM, Las Animas, CO

Built 1934 Load: 28.1 t ADT: 130

County Road 96

Good

Over: Coalbank Creek

0.6 Mi E of Co Rd 21, Weld, CO

Built 1991 Load: 28.1 t ADT: 106

Yahmonite Road

Good

Over: Soda Creek

40 ft NW of 9th Street, Routt, CO

Built 2008 Load: 28.2 t ADT: 1,929

BAYFIELD PARKWAY

Good

Over: LOS PINOS RIVER

0.15 W Mill Street, La Plata, CO

Built 2017 Load: 28.2 t ADT: 3,060

NEVADA AVE SB

Good

Over: CSE RR VAN BUREN C

0.2 MI S OF FILLMORE ST, El Paso, CO

Built 1949 Load: 28.2 t ADT: 7,863

COUNTY ROAD 24

Good

Over: GRAND VALLEY CANAL

.3 MI N OF RD I, Mesa, CO

Built 2013 Load: 28.2 t ADT: 2,306

US 287 ML

Good

Over: DRAW

2.2 MI N OF JCT US 160, Baca, CO

Built 1975 Load: 28.2 t ADT: 3,000

US 160 ML

Good

Over: GREY CREEK

4.0 MI E OF JCT I 25, Las Animas, CO

Built 1968 Load: 28.2 t ADT: 3,400

COUNTY ROAD LL

Good

Over: PLEASANT VALLEY DRAIN

.3 MI W OF CR 6, Prowers, CO

Built 1960 Load: 28.2 t ADT: 155

County Road 61

Good

Over: Sand Creek

0.1 Mi. No. of Co. Rd. 6, Sedgwick, CO

Built 1992 Load: 28.2 t ADT: 12

CR 50.5

Good

Over: Union Ditch

0.4 MI W. of CR 41, Weld, CO

Built 2017 Load: 28.2 t ADT: 37

SH 392 ML

Good

Over: GREELEY CANAL NO 2

1.2 MI E OF JCT SH 257, Weld, CO

Built 1971 Load: 28.3 t ADT: 14,000

I 76 EBND ML

Good

Over: RAMP TO I 25 NBND

0.2 MI E OF I 25, Adams, CO

Built 1990 Load: 28.3 t ADT: 37,000

I 76 WBND ML

Good

Over: RAMP TO I 25 NBND

0.2 MI E OF I 25, Adams, CO

Built 1990 Load: 28.3 t ADT: 37,000

RAMP TO I 25 NBND

Good

Over: RAMP TO I 25 SBND R

0.1 MI W. OF I25+I76 JCT, Adams, CO

Built 1991 Load: 28.3 t ADT: 37,500

I25 SBND ON RAMP

Good

Over: MARK DABLING BLVD/UPRR

IN COLORADO SPGS, El Paso, CO

Built 2008 Load: 28.3 t ADT: 57,000

County Road 15

Good

Over: Settlers Ditch

0.2 Mi. N. of Co. Rd. 30, Sedgwick, CO

Built 1987 Load: 28.3 t ADT: 19

VAN TEYLINGEN DR

Good

Over: TEMPLETON GAP

0.2 MI S OF AUSTIN BLUFFS, El Paso, CO

Built 1980 Load: 28.4 t ADT: 8,392

SH 94 ML

Good

Over: RUSH CREEK

11.6 MI E OF JCT SH 71, Lincoln, CO

Built 1992 Load: 28.4 t ADT: 440

County Road 10

Good

Over: Little Snake River

12.4 Mi So of St Hwy 318, Moffat, CO

Built 1989 Load: 28.4 t ADT: 4

COUNTY ROAD 3

Good

Over: ROCKY FORD HIGHLINE CANA

.2 MI N OF CR JJ, Otero, CO

Built 1993 Load: 28.4 t ADT: 180

US 550 NBND ML

Good

Over: DRAINAGE WAY

1.2 MI FROM NM BORDER, La Plata, CO

Built 2010 Load: 28.4 t ADT: 4,050

FSR 380

Good

Over: PARK CREEK

.60 MI ON FSR 380, Mineral, CO

Built 1953 Load: 28.5 t ADT: 106

I 70 ML WBND

Good

Over: BEARDEN RD

3.6 MI W OF WOLCOTT INTER, Eagle, CO

Built 1971 Load: 28.5 t ADT: 14,500

US 160 ML

Good

Over: N FK SAND ARROYO

22 MI E OF JCT SH 109, Baca, CO

Built 2013 Load: 28.5 t ADT: 270

CITY ST 6TH STREET

Good

Over: QUARTZ CREEK

IN TOWN OF PITKIN, Gunnison, CO

Built 1996 Load: 28.5 t ADT: 58

County Road 19

Good

Over: Fort Morgan Canal

0.9 Mi N of Co Rd O, Morgan, CO

Built 1940 Load: 28.6 t ADT: 801

County Road 5

Good

Over: Riverside Canal

1.2 Mi N of Co Rd BB, Morgan, CO

Built 2007 Load: 28.6 t ADT: 189

LINDEN AVENUE

Good

Over: PURGATOIRE RIVER

.1 MI W OF E. ELM ST, Las Animas, CO

Built 1989 Load: 28.6 t ADT: 856

County Road 29

Good

Over: Pierce Lateral Canal

0.3 Mi N of Co Rd 88, Weld, CO

Built 1990 Load: 28.6 t ADT: 1,615

US 40 ML

Good

Over: DRAW

W. SIDE OF DINOSAUR, Moffat, CO

Built 1936 Load: 28.7 t ADT: 1,900

SH21-SB POWERS BLV

Good

Over: WOODMEN RD

SBND ML, El Paso, CO

Built 2008 Load: 28.7 t ADT: 28,000

SH 21-POWERS NB

Good

Over: WOODMEN RD.

NE COLO. SPRINGS, El Paso, CO

Built 2008 Load: 28.7 t ADT: 28,000

14

Good

Over: WEST FORK PINOS CREEK

10.5 MI SW OF DEL NORTE, Rio Grande, CO

Built 1967 Load: 28.8 t ADT: 74

SH 14 ML

Good

Over: LARIMER-WELD CANAL

1.1 MI E OF JCT I25, Larimer, CO

Built 1983 Load: 28.8 t ADT: 19,000

COOK ST

Good

Over: EAST HARVARD GULCH

COOK N OF VASSAR AVE, Denver, CO

Built 1967 Load: 28.8 t ADT: 275

LEV 4 SE TERM RAMP

Good

Over: 84TH AVENUE

SE CORNER TERM BLDG, Denver, CO

Built 2014 Load: 28.8 t ADT: 8,856

LEV 6 SW TERM RAMP

Good

Over: 84TH AVENUE

SW CORNER TERM BLDG, Denver, CO

Built 2014 Load: 28.8 t ADT: 8,129

LEV 4 SW TERM RAMP

Good

Over: 84TH AVENUE

SW CORNER TERM BLDG, Denver, CO

Built 2014 Load: 28.8 t ADT: 6,884

I 76 ML WBND

Good

Over: UP RR AND RTD

3.6 MI E OF I70 + I 76 IN, Adams, CO

Built 1988 Load: 28.8 t ADT: 38,500

I 76 ML WBND

Good

Over: RAMP TO I 25 SBND

0.1 MI W. OF I25+I76 JCT, Adams, CO

Built 1991 Load: 28.8 t ADT: 37,500

RAMP TO I 70 EBND

Good

Over: CLEAR CREEK R

3.4 MI E. OF JCT SH 103, Clear Creek, CO

Built 1999 Load: 28.8 t ADT: 23,500

COUNTY ROAD 65

Good

Over: I 70 ML

4.9 MI E OF JCT US 6, Jefferson, CO

Built 1971 Load: 28.8 t ADT: 4,767

Whitcomb/LaPorte

Good

Over: Arthur Ditch

Whitcomb at laPorte, Larimer, CO

Built 2013 Load: 28.8 t ADT: 261

Showing 5,801-5,850 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.