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

Thirteenth Street

Fair

Over: Fortification Creek

100 Ft E of Yampa Avenue, Moffat, CO

Built 1939 Load: 16.7 t ADT: 127

COUNTY ROAD 6

Fair

Over: DUCK CREEK

2.3 MILES NORTH OF ROAD V, Kit Carson, CO

Built 1965 Load: 16.7 t ADT: 67

County Road 31

Fair

Over: Pawnee Creek

0.1 Mi. N. of Co Rd 18.2, Logan, CO

Built 1950 Load: 16.7 t ADT: 41

Stock Drive

Fair

Over: Fortification Creek

0.2 Mi West of Preese St, Moffat, CO

Built 1940 Load: 16.7 t ADT: 342

FDR 260

Fair

Over: ALAMOSA RIVER

17 MI SSW OF MONTE VISTA, Conejos, CO

Built 1933 Load: 16.8 t ADT: 18

HOOP CREEK ROAD

Fair

Over: WEST FORK CLEAR CREEK

0.12 MILES SOUTH OF US 40, Clear Creek, CO

Built 1956 Load: 16.8 t ADT: 1

FDR 105-4A

Fair

Over: FRYINGPAN RV

NAST, Pitkin, CO

Built 1984 Load: 16.8 t ADT: 10

FDR 416

Fair

Over: E BRUSH CR

YEOMAN PARK, Eagle, CO

Built 1970 Load: 16.8 t ADT: 50

YALE AVE

Fair

Over: HIGHLINE CANAL

YALE W OF QUEBEC ST, Denver, CO

Built 1964 Load: 16.8 t ADT: 12,726

US 40 ML

Fair

Over: I 70 ML

1.8 MI E OF JCT SH 74, Jefferson, CO

Built 1970 Load: 16.8 t ADT: 2,300

SEIBERT CIRCLE

Fair

Over: TALLMAN GULCH TRIB.

JUST SW OF SUSSEX COURT, Douglas, CO

Built 1972 Load: 16.8 t ADT: 867

COUNTY ROAD BB

Fair

Over: GRANADA CREEK

1 MI E OF CR 25, Prowers, CO

Built 1970 Load: 16.8 t ADT: 6

SH 14 ML

Fair

Over: NORTH STERLING CANAL

15.6 MI E OF JCT SH 71 SO, Logan, CO

Built 1947 Load: 16.9 t ADT: 3,500

COUNTY ROAD 30

Fair

Over: KICKING BIRD CANAL

4 MI N OF US 50, Bent, CO

Built 1986 Load: 16.9 t ADT: 27

County Road 52

Fair

Over: Harmony No. 2 Canal

0.4 Mi E of Co Rd 65.7, Logan, CO

Built 1920 Load: 16.9 t ADT: 2

Rainbow Trout LN

Fair

Over: Big Thompson River

25 Ft S of US Hwy 34, Larimer, CO

Built 1977 Load: 16.9 t ADT: 18

Cedar Cove Road

Fair

Over: Big Thompson River

0.2 Mi N of US Hwy 34, Larimer, CO

Built 1977 Load: 16.9 t ADT: 27

First Street

Fair

Over: Fortification Creek

0.7 Mi East of St Hwy 394, Moffat, CO

Built 1939 Load: 16.9 t ADT: 1,991

COUNTY ROAD 5800

Fair

Over: COAL CREEK

JUST S OF JASMINE ROAD, Montrose, CO

Built 1981 Load: 17.0 t ADT: 56

US 6 ML

Fair

Over: UP RR

12 MI SW OF STERLING, Logan, CO

Built 1999 Load: 17.0 t ADT: 1,000

SH 96 ML

Fair

Over: BRANCH OF RITCHIE GULCH

3.9 MI E OF JCT SH 67 WET, Pueblo, CO

Built 1938 Load: 17.0 t ADT: 1,000

COUNTY ROAD G.8

Fair

Over: COLORADO RIVER

JUST S OF US 6, Mesa, CO

Built 1937 Load: 17.0 t ADT: 412

County Road 29

Fair

Over: Beaver Creek

0.1 MI W of Co. Rd. H.25, Washington, CO

Built 1932 Load: 17.0 t ADT: 55

County Road 29

Fair

Over: Trout Creek

8.0 Mi S of Co Rd 27, Routt, CO

Built 1967 Load: 17.1 t ADT: 38

COUNTY ROAD 24

Fair

Over: KICKING BIRD CANAL

2.7 MI N OF US 50, Bent, CO

Built 1983 Load: 17.1 t ADT: 88

SH 119 ML

Fair

Over: BOULDER CREEK

13.7 MI E OF JCT SH 72, Boulder, CO

Built 1953 Load: 17.1 t ADT: 6,400

I 70 ML EBND

Fair

Over: GAME UNDERPASS

7 MI W OF VAIL SUMMIT, Eagle, CO

Built 1977 Load: 17.1 t ADT: 10,000

COUNTY ROAD NN

Fair

Over: LANDSMAN CREEK

1.7 MILES NW OF RD 49, Kit Carson, CO

Built 1970 Load: 17.1 t ADT: 17

County Road 37

Fair

Over: Lone Pine Creek

0.2 Mi N of Co Rd 74E, Larimer, CO

Built 1981 Load: 17.1 t ADT: 96

WCR 3 LCR 1

Fair

Over: Cache La Poudre River

0.4 Mi S of St Hwy 392, Larimer, CO

Built 1977 Load: 17.1 t ADT: 11,943

County Road 1

Fair

Over: Slater Creek

1.1 M S. of WYM St Hwy 70, Moffat, CO

Built 1940 Load: 17.1 t ADT: 179

JACKSON ST.

Fair

Over: BESSEMER DITCH

CORNER OF JACKSON/ADAM, Pueblo, CO

Built 1933 Load: 17.1 t ADT: 2,732

168TH AVENUE

Fair

Over: BIG DRY CREEK

2.5 MI E OF WASHINGTON ST, Adams, CO

Built 1950 Load: 17.1 t ADT: 5,444

CR27 (83rd Ave)

Fair

Over: Loveland Greeley Canal

0.2 Mi N of 49th St., Weld, CO

Built 1983 Load: 17.1 t ADT: 74

NOLAN STREET

Fair

Over: RALSTON CREEK

0.06 MI N OF 58TH AVENUE, Jefferson, CO

Built 1950 Load: 17.2 t ADT: 576

COUNTY ROAD 10

Fair

Over: PLUM CREEK

1.9 MI N OF CR FF, Baca, CO

Built 1950 Load: 17.2 t ADT: 53

I 76 ML WBND

Fair

Over: SH 52 ML

9.5 MI SW OF JCT SH 71, Morgan, CO

Built 1959 Load: 17.2 t ADT: 8,000

I 76 ML EBND

Fair

Over: SH 52 ML

1.3 MI E OF JCT SH 144, Morgan, CO

Built 1959 Load: 17.2 t ADT: 8,000

8TH STREET

Fair

Over: FOUNTAIN CREEK

JUST N OF GARNER STREET, El Paso, CO

Built 1951 Load: 17.2 t ADT: 23,811

I 70 ML

Fair

Over: US 6/24 RR EAGLE RIVER

MINTURN INTERCHANGE, Eagle, CO

Built 1970 Load: 17.2 t ADT: 33,000

COUNTY ROAD 67

Fair

Over: EIGHT MILE CREEK

12.5 MI N OF CR 123, Fremont, CO

Built 1989 Load: 17.2 t ADT: 22

SH 340 ML EBND

Fair

Over: REDLANDS POWER CANAL

W. EDGE OF GRAND JUNCTION, Mesa, CO

Built 1950 Load: 17.2 t ADT: 6,500

SH 82 ML

Fair

Over: LAKE CREEK

4.6 MI E OF TWIN LAKES, Lake, CO

Built 1948 Load: 17.2 t ADT: 2,200

COUNTY ROAD MM

Fair

Over: DRY GULCH

0.8 MILES WEST OF ROAD 44, Kit Carson, CO

Built 1974 Load: 17.2 t ADT: 3

COUNTY RD 8.8

Fair

Over: RITO SECO CREEK

0.1 MI WEST OF CR 107.3, Las Animas, CO

Built 1930 Load: 17.2 t ADT: 13

SEIBERT CIRCLE

Fair

Over: TALLMAN GULCH

AT STONEHENGE, Douglas, CO

Built 1972 Load: 17.2 t ADT: 918

SEIBERT CIRCLE

Fair

Over: TALLMAN GULCH

JUST E OF AINTREE CT., Douglas, CO

Built 1972 Load: 17.2 t ADT: 857

I 25 ML

Fair

Over: DRAW

6.7 MI N OF JCT SH 83 ML, El Paso, CO

Built 1926 Load: 17.3 t ADT: 91,000

US 24 ML

Fair

Over: BIG SANDY CREEK

2.0 MI NE OF JCT US 285, Chaffee, CO

Built 1938 Load: 17.3 t ADT: 6,700

SH 115 ML

Fair

Over: OAK CREEK

W. EDGE OF FLORENCE, Fremont, CO

Built 1936 Load: 17.3 t ADT: 5,900

Showing 301-350 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.