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

County Road 18S

Fair

Over: Fortification Creek

0.11 Mi East of St Hwy 13, Moffat, CO

Built 1987 Load: 22.5 t ADT: 303

COUNTY ROAD 6W

Fair

Over: FARMERS UNION CANAL

.4 MI N OF CR 6N, Rio Grande, CO

Built 1940 Load: 22.5 t ADT: 60

Folsom Street

Fair

Over: Goose Creek

300 Ft. So. of Valmont, Boulder, CO

Built 1970 Load: 22.6 t ADT: 10,980

US 287 ML

Fair

Over: LEFT HAND CREEK

IN LONGMONT, Boulder, CO

Built 1948 Load: 22.6 t ADT: 24,000

COUNTY ROAD 1800

Fair

Over: SURFACE CREEK

.2 MI E OF 2375 RD, Delta, CO

Built 1985 Load: 22.6 t ADT: 368

CHIPITA PARK RD

Fair

Over: FOUNTAIN CREEK

N FOUNTAIN/CHIPITA PARK, El Paso, CO

Built 1976 Load: 22.6 t ADT: 1,350

I 70 ML WBND

Fair

Over: COUNTY ROAD 178

3.6 MI W OF JCT AGATE SPU, Elbert, CO

Built 1966 Load: 22.6 t ADT: 5,500

COUNTY ROAD 30

Fair

Over: BRANCH OF LANDSMAN CREEK

0.4 MILES NORTH OF ROAD G, Kit Carson, CO

Built 1959 Load: 22.6 t ADT: 318

COUNTY ROAD N.3

Fair

Over: BIG SALT WASH

.3 MI N OF RD N, Mesa, CO

Built 1986 Load: 22.6 t ADT: 147

County Road F

Fair

Over: Buck Creek

0.2 Mi E of Co Rd 31, Morgan, CO

Built 1989 Load: 22.6 t ADT: 43

FDR 266

Fair

Over: BUZZARD CREEK

15.2 MI EAST OF COLLBRAN, Mesa, CO

Built 1984 Load: 22.7 t ADT: 56

FDR 504

Fair

Over: FRYINGPAN RV

NORRIE, Pitkin, CO

Built 1948 Load: 22.7 t ADT: 10

COUNTY ROAD 42

Fair

Over: W BIJOU CREEK

3.2 MI EAST OF CR 157, Arapahoe, CO

Built 1964 Load: 22.7 t ADT: 96

US 40 ML WB

Fair

Over: FORTIFICATION CREEK

IN CRAIG, Moffat, CO

Built 1952 Load: 22.7 t ADT: 3,000

St Vrain Road CR16

Fair

Over: Boulder Feeder Ditch

0.5 Mi E of Co Rd 51, Boulder, CO

Built 1955 Load: 22.7 t ADT: 1,009

SH 14 ML

Fair

Over: COLORADO CREEK

6.1 MI E OF US 40, Jackson, CO

Built 1949 Load: 22.7 t ADT: 1,300

SH 170 ML

Fair

Over: COMMUNITY DITCH

E ENT ELDORADO STATE PARK, Boulder, CO

Built 1999 Load: 22.7 t ADT: 1,300

I 270 EBND ML

Fair

Over: WASHINGTON STREET

JUST EAST OF I-25 ramp; U, Adams, CO

Built 2003 Load: 22.7 t ADT: 37,500

270SB _76EB RMP Y

Fair

Over: I76 RMPS SH224 CLR.CRK.

SH 270 and I76, Adams, CO

Built 2010 Load: 22.7 t ADT: 37,500

US 6 ML

Fair

Over: I 70 ML

IN GYPSUM, Eagle, CO

Built 1978 Load: 22.7 t ADT: 3,700

I 70 SERVICE RD

Fair

Over: MIDDLE BIJOU CREEK SR

7.3 MI E OF JCT 36 BYERS, Arapahoe, CO

Built 1966 Load: 22.7 t ADT: 12,000

I 70 ML EBND

Fair

Over: COUNTY ROAD 178

8.4 MI E OF JCT DEERTRAIL, Elbert, CO

Built 1966 Load: 22.7 t ADT: 5,500

I 25 ML

Fair

Over: DRAW

IN COLORADO SPRINGS, El Paso, CO

Built 1959 Load: 22.7 t ADT: 123,000

US 50 ML

Fair

Over: GUNNISON RIVER

WEST OF GUNNIISON, Gunnison, CO

Built 1957 Load: 22.7 t ADT: 6,200

SH 47 ML WBND

Fair

Over: FOUNTAIN CREEK

IN PUEBLO .5 E OF I25, Pueblo, CO

Built 1968 Load: 22.7 t ADT: 16,500

COUNTY ROAD 345

Fair

Over: I 25 ML

2.9 MI NO OF JCT SH 165 M, Pueblo, CO

Built 1965 Load: 22.7 t ADT: 179

COMMUNITY CENTR DR

Fair

Over: I-25

112th OVER I-25, Adams, CO

Built 2004 Load: 22.7 t ADT: 17,321

COUNTY ROAD DD

Fair

Over: CATLIN CANAL

JUST W OF CR 20.5, Otero, CO

Built 1991 Load: 22.7 t ADT: 175

US 160 ML

Fair

Over: DRAW

34 miles West of Kim, Las Animas, CO

Built 1939 Load: 22.7 t ADT: 180

CR8/Watson Divide

Fair

Over: SNOWMASS CREEK

At Snowmass Circle Rd, Pitkin, CO

Built 1989 Load: 22.7 t ADT: 416

COUNTY ROAD 39

Fair

Over: CHEYENNE CREEK

0.1 MI S OF CR KK, Prowers, CO

Built 1960 Load: 22.7 t ADT: 43

Steamboat Blvd.

Fair

Over: Fish Creek

1.8 Mi E of Mt Werner Rd, Routt, CO

Built 1982 Load: 22.8 t ADT: 1,402

WATKINS ROAD

Fair

Over: LOCAL DRAINAGE

0.9 MI S OF I-70, Arapahoe, CO

Built 1968 Load: 22.8 t ADT: 3,646

CALHAN HIGHWAY

Fair

Over: STEELS FORK CREEK

4.8 MI S OF CALHAN, El Paso, CO

Built 1984 Load: 22.8 t ADT: 821

I 70 ML EBND

Fair

Over: COUNTY RD 93

Morrison-Red Rocks Int., Jefferson, CO

Built 1969 Load: 22.8 t ADT: 35,000

SH 67 ML

Fair

Over: HORSE CREEK

9.1 MI N OF TELLER-DOUGLA, Douglas, CO

Built 1953 Load: 22.8 t ADT: 650

County Road 29

Fair

Over: Pawnee Creek

1.3 Mi. N. of Co Rd 16.5, Logan, CO

Built 1969 Load: 22.8 t ADT: 58

County Road 90

Fair

Over: Pierce Lateral Canal

0.2 Mi E of Co Rd 29, Weld, CO

Built 1993 Load: 22.8 t ADT: 868

96TH AVENUE

Fair

Over: LITTLE MUDDY CREEK

.9 MI E OF HANKS CROSSING, Adams, CO

Built 1995 Load: 22.9 t ADT: 30

COUNTY ROAD 17

Fair

Over: TRIBUTARY OF SAND ARROYO

JUST N OF CR R, Baca, CO

Built 1975 Load: 22.9 t ADT: 6

US 85 ML NBND

Fair

Over: CACHE LA POUDRE RIVER

IN GREELEY, Weld, CO

Built 1966 Load: 22.9 t ADT: 3,450

US 85 ML BUS RT SB

Fair

Over: CACHE LA POUDRE RIVER

IN GREELEY, Weld, CO

Built 1949 Load: 22.9 t ADT: 3,450

I 25 ML SBND

Fair

Over: AF ACADEMY(NORTH GATE)

7.5 MI S OF EL PASO-DOUGL, El Paso, CO

Built 1958 Load: 22.9 t ADT: 46,000

SH 141 ML

Fair

Over: NATURITA CREEK

JUST S OF SH 145 JCT, Montrose, CO

Built 1961 Load: 22.9 t ADT: 1,200

County Road 3

Fair

Over: Settlers Ditch

0.5 Mi N. of US Hwy 138, Sedgwick, CO

Built 1959 Load: 22.9 t ADT: 19

COUNTY ROAD P16

Fair

Over: DISAPPOINTMENT CREEK

7.2 MI SE OF SLICK ROCK, San Miguel, CO

Built 1975 Load: 22.9 t ADT: 1

COUNTY ROAD 112

Fair

Over: LA JARA CREEK

7.2 MI SE OF ALAMOSA, Alamosa, CO

Built 1990 Load: 23.0 t ADT: 98

HOLLY ROAD

Fair

Over: DRY CREEK

5.1 MI SW OF OLATHE, Montrose, CO

Built 1981 Load: 23.0 t ADT: 39

COUNTY ROAD 5600

Fair

Over: MONTROSE CANAL

4.6 MI SW OF OLATHE, Montrose, CO

Built 1990 Load: 23.0 t ADT: 383

CRESTED BUTTE CIR

Fair

Over: DOUGLAS CREEK

JUST E OF CENTENNIAL BLVD, El Paso, CO

Built 1984 Load: 23.0 t ADT: 370

Showing 901-950 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.