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

I 225 ML SBND

Fair

Over: I 70 ML

DENVER, Adams, CO

Built 1994 Load: 19.1 t ADT: 60,500

SHRINE PASS ROAD

Fair

Over: I 70 ML

0.1 MI E OF EAGLE SUMMIT, Summit, CO

Built 1975 Load: 19.1 t ADT: 1,545

SH 8 ML

Fair

Over: STRAINS GULCH

0.75 MI S OF MORRISON, Jefferson, CO

Built 1935 Load: 19.1 t ADT: 4,000

US 6 ML

Fair

Over: Colorado N. Channel

10.9 MI W. OF PARACHUTE, Mesa, CO

Built 1945 Load: 19.1 t ADT: 1,200

US 50 ML

Fair

Over: BAKERS GULCH

12 MI NE OF TEXAS CREEK, Fremont, CO

Built 1936 Load: 19.1 t ADT: 2,500

County Road 56

Fair

Over: N. Sterling Outlet Canal

0.9 Mi W of St Hwy 113, Logan, CO

Built 1940 Load: 19.1 t ADT: 3

US 491 ML

Fair

Over: DOVE CREEK

DOVE CREEK, Dolores, CO

Built 1935 Load: 19.1 t ADT: 4,700

SH 159 ML

Fair

Over: CULEBRA CREEK

S. EDGE OF SAN LUIS, Costilla, CO

Built 1936 Load: 19.1 t ADT: 800

COUNTY ROAD 19

Fair

Over: AMITY CANAL

1.1 MI N OF CR LL, Prowers, CO

Built 1950 Load: 19.1 t ADT: 9

COUNTY ROAD 3W

Fair

Over: RIO GRANDE CANAL

.2 MI N OF CR N6, Rio Grande, CO

Built 1995 Load: 19.1 t ADT: 163

County Road 21

Fair

Over: Sand Creek

0.1 Mi. E. of Co. Rd. Q, Washington, CO

Built 1974 Load: 19.1 t ADT: 21

SH 113 ML

Fair

Over: DRAW

12.5 MI N OF JCT SH 138, Logan, CO

Built 1937 Load: 19.2 t ADT: 1,100

RENDEZVOUS TRAIL

Fair

Over: DOUGLAS CREEK

EAST OF CENTENNIAL BLVD, El Paso, CO

Built 1984 Load: 19.2 t ADT: 241

48TH AVE

Fair

Over: RR YARD/ACCESS ROAD

48TH BTWN FOX+KALAMATH, Denver, CO

Built 1978 Load: 19.2 t ADT: 9,279

US 385 ML

Fair

Over: WHITE WOMAN CREEK

10.8 MI N OF JCT SH 96, Kiowa, CO

Built 1975 Load: 19.2 t ADT: 300

SH 69 ML

Fair

Over: DOG SPRINGS CREEK

12.4 MI NE OF JCT I 25, Huerfano, CO

Built 1966 Load: 19.2 t ADT: 740

COUNTY ROAD 10

Fair

Over: AMITY CANAL

JUST S OF CR LL, Prowers, CO

Built 1960 Load: 19.2 t ADT: 160

COUNTY ROAD 12

Fair

Over: LAMAR CANAL

JUST S OF SH 50, Prowers, CO

Built 1959 Load: 19.2 t ADT: 364

County Road 20.5

Fair

Over: Boulder Creek

1.8 Mi E of Co Rd 1, Weld, CO

Built 1978 Load: 19.2 t ADT: 3,015

IRR# COUNTY RD 322

Fair

Over: LOS PINOS RIVER

.2 MI E OF SH 172, La Plata, CO

Built 1961 Load: 19.3 t ADT: 85

US 6 ML

Fair

Over: COLORADO RIVER

1 MI E. OF DEBEQUE, Mesa, CO

Built 1945 Load: 19.3 t ADT: 1,200

COUNTY ROAD 33

Fair

Over: LAKE FORK GUNNISON RIVER

5.5 MI S OF LAKE CITY, Hinsdale, CO

Built 1983 Load: 19.3 t ADT: 56

SH 92 ML

Fair

Over: N FK GUNNISON RIVER

0.3 MI SE OF HOTCHKISS, Delta, CO

Built 1966 Load: 19.3 t ADT: 2,900

COUNTY ROAD 40

Fair

Over: TRIB. TO LANDSMAN CREEK

4.7 MI N OF I-70, Kit Carson, CO

Built 1930 Load: 19.3 t ADT: 262

SH 149 ML

Fair

Over: LAKE FK GUNNISON RIVER

14.8 MI NORTH OF LAKE CIT, Gunnison, CO

Built 1957 Load: 19.3 t ADT: 560

US 350 ML

Fair

Over: DRAW

11 MILES NE OF BLOOM, Otero, CO

Built 1937 Load: 19.3 t ADT: 470

COUNTY ROAD 8N

Fair

Over: FARMERS UNION CANAL

.5 MI E OF CR 5W, Rio Grande, CO

Built 1969 Load: 19.3 t ADT: 5

NFSR 123

Fair

Over: N. FORK SO. PLATTE RIV

3.1 MI NW OF SH 285, Park, CO

Built 1940 Load: 19.4 t ADT: 10

County Road 130

Fair

Over: Middle Boulder Creek

2.5 Mi W of St Hwy 72, Boulder, CO

Built 1990 Load: 19.4 t ADT: 742

SPEER BLVD WB

Fair

Over: CHERRY CREEK

SPEER BLVD AT LAWRENCE ST, Denver, CO

Built 1981 Load: 19.4 t ADT: 24,845

BOSTON ST

Fair

Over: HIGHLINE CANAL

0.1 MI NORTH OF CORNELL, Denver, CO

Built 1983 Load: 19.4 t

CO RD 45

Fair

Over: TOMICHI CREEK

0.7 MI S OF DOYLEVILLE, Gunnison, CO

Built 1955 Load: 19.4 t ADT: 157

SH 139 ML

Fair

Over: I 70 ML

13.5 MI E UTAH - LOMA int, Mesa, CO

Built 1970 Load: 19.4 t ADT: 1,700

COUNTY ROAD T

Fair

Over: SAND CREEK

0.6 MILES EAST OF ROAD 49, Kit Carson, CO

Built 1965 Load: 19.4 t ADT: 53

County Road 25

Fair

Over: Pawnee Ditch

0.7 Mi N of US Hwy 6, Logan, CO

Built 1950 Load: 19.4 t ADT: 777

County Road 28

Fair

Over: Lower Platte Beaver Cnl

Just North Co Rd U.5, Morgan, CO

Built 1940 Load: 19.4 t ADT: 40

County Road Y

Fair

Over: S. Fork Republican River

0.10 Mi North of Cty Line, Yuma, CO

Built 1940 Load: 19.4 t ADT: 68

BARNES ROAD WB

Fair

Over: SAND CREEK

0.8 MI E OF POWERS BLVD., El Paso, CO

Built 1985 Load: 19.5 t ADT: 8,094

US 24 ML

Fair

Over: EAGLE RIVER

REDCLIFF ARCH, Eagle, CO

Built 1940 Load: 19.5 t ADT: 2,000

REDLAND PKWY RAMP

Fair

Over: TERRAIN

I-70B AND REDLANDS PKWY, Mesa, CO

Built 1983 Load: 19.5 t ADT: 887

REDLAND PKWY RAMP

Fair

Over: TERRAIN AND LEACH CREEK

I-70B AND REDLANDS PKWY, Mesa, CO

Built 1983 Load: 19.5 t ADT: 3,808

I 25 ML NBND

Fair

Over: LITTLE FOUNTAIN CREEK

3.8 MI S OF SH85-FOUNTAIN, El Paso, CO

Built 1958 Load: 19.5 t ADT: 20,500

I 25 ML SBND

Fair

Over: LITTLE FOUNTAIN CREEK

3.8 MI SE OF JCT US 85, El Paso, CO

Built 1958 Load: 19.5 t ADT: 20,500

SH 69 ML

Fair

Over: MISSOURI CREEK

3.9 MI NW OF JCT I 25, Huerfano, CO

Built 1940 Load: 19.5 t ADT: 890

County Road 12E

Fair

Over: Michigan River

0.9 Mi E of St Hwy 125, Jackson, CO

Built 1978 Load: 19.6 t ADT: 147

E. KEYSTONE RD.

Fair

Over: SNAKE RIVER

.2 MI W OF MONTEZUMA RD, Summit, CO

Built 1978 Load: 19.6 t ADT: 433

US 385 ML

Fair

Over: BUFFALO CREEK

6 MI NORTH OF GRANADA, Prowers, CO

Built 1935 Load: 19.6 t ADT: 470

COUNTY RD 75.0

Fair

Over: PICKETWIRE DITCH

1.0 MI N OF CR 32.4, Las Animas, CO

Built 1930 Load: 19.6 t ADT: 124

COUNTY ROAD S

Fair

Over: LITTLE HORSE CREEK

2.2 MILES EAST OF ROAD 11, Lincoln, CO

Built 1955 Load: 19.6 t ADT: 27

County Road 25

Fair

Over: Yampa River

0.31 M N of 12 M Gulch Rd, Moffat, CO

Built 1990 Load: 19.6 t ADT: 10

Showing 501-550 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.