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 C

Good

Over: SANTANTA CANAL

0.5 MI E OF CR 39.5, Kiowa, CO

Built 1991 Load: 35.8 t ADT: 11

CR 14.5 (14TH ST)

Good

Over: South Platte River

1.3 Mi E of Co Rd 23, Weld, CO

Built 1993 Load: 35.8 t ADT: 1,952

County Road 59

Good

Over: Crow Creek

0.3 Mi N of Co Rd 64, Weld, CO

Built 2005 Load: 35.8 t ADT: 805

County Road 66

Good

Over: Granby Pump Canal

Rd to Spillway, Grand, CO

Built 1991 Load: 35.9 t ADT: 458

PRIVATE ACCESS RD

Good

Over: 15TH STREET

0.1 MI E OF LITTLE RAVEN, Denver, CO

Built 1992 Load: 35.9 t

PRIVATE ACCESS RD

Good

Over: 15TH STREET

0.1 MI E OF LITTLE RAVEN, Denver, CO

Built 1992 Load: 35.9 t ADT: 10

SH 52 ML

Good

Over: SULLIVAN CANAL

0.9 MI E OF JCT I 25, Weld, CO

Built 1960 Load: 35.9 t ADT: 18,000

VERBENA STREET

Good

Over: LOCAL DRAINAGE

0.1 MI N OF 51ST AVE, Denver, CO

Built 2015 Load: 35.9 t ADT: 994

I 25 ML HOV LANES

Good

Over: RAMPS TO I 25/ I 70

IN DENVER, Denver, CO

Built 1989 Load: 35.9 t ADT: 200,000

COUNTY ROAD 301

Good

Over: COLORADO RIVER

0.2 MI N OF CR 39, Eagle, CO

Built 2016 Load: 35.9 t ADT: 101

I 25 ML

Good

Over: RDWY RR SOUTH PLATTE RVR

IN DENVER, Denver, CO

Built 2011 Load: 35.9 t ADT: 212,000

COUNTY ROAD 31

Good

Over: LEWIS WASH

.17 MI S OF ROAD D, Mesa, CO

Built 2009 Load: 35.9 t ADT: 15

COUNTY ROAD K

Good

Over: GRAND VALLEY CANAL

0.7 MI E OF RD 19, Mesa, CO

Built 2014 Load: 35.9 t ADT: 2,362

County Road 8

Good

Over: Riverside Canal

0.7 Mi N of Co Rd AA, Morgan, CO

Built 1990 Load: 35.9 t ADT: 23

SH 142 ML

Good

Over: RIO GRANDE

11.4 M E OF MANASSA, Conejos, CO

Built 1984 Load: 35.9 t ADT: 130

COUNTY ROAD 19Q

Good

Over: DISAPPOINTMENT CREEK

9.7 MI S OF SH 141, San Miguel, CO

Built 1996 Load: 35.9 t ADT: 5

County Road 33A

Good

Over: Yampa River

0.2 Mi So of US Hwy 40, Routt, CO

Built 1986 Load: 36.0 t ADT: 176

E-470 NB

Good

Over: Buckley Road

34.63 MI FROM I25, Adams, CO

Built 2002 Load: 36.0 t ADT: 21,707

E470SB RAMP YORK

Good

Over: Big Dry Creek

44.98 MI FROM I25, Adams, CO

Built 2001 Load: 36.0 t ADT: 370

SYLVAN LAKE RD

Good

Over: BRUSH CREEK

0.1 MI S OF BRUSH CRK RD, Eagle, CO

Built 2007 Load: 36.0 t ADT: 1,343

US 40 ML

Good

Over: SODA CREEK

6.2 MI E OF JCT US 6, Jefferson, CO

Built 2000 Load: 36.0 t ADT: 480

PINE STREET

Good

Over: LITTLE SALT WASH

.5 MI N OF RD K, Mesa, CO

Built 2023 Load: 36.0 t ADT: 2,325

County Road 204

Good

Over: Logan Wash

2.3 Mi No of Mesa Co Line, Garfield, CO

Built 1992 Load: 36.0 t ADT: 724

COUNTY ROAD 230

Good

Over: CUCHARAS RIVER

0.2 MI S OF SH 10, Huerfano, CO

Built 1995 Load: 36.0 t ADT: 14

SH 47 ML EBND

Good

Over: FOUNTAIN CREEK

0.5 MI E OF I-25 PUEBLO, Pueblo, CO

Built 1984 Load: 36.0 t ADT: 16,500

Little River Lane

Good

Over: South Arkansas River

.2 Mi SE of E. Ouray, Chaffee, CO

Built 2013 Load: 36.0 t ADT: 54

County Road 57

Good

Over: Wild Horse Creek

5.2 Mi N of St Hwy 14, Weld, CO

Built 1987 Load: 36.0 t ADT: 63

County Road 58

Good

Over: Pond Adj So Platte River

0.4 Mi E of Hemlock St, Weld, CO

Built 2016 Load: 36.0 t ADT: 8,636

5TH ST.

Good

Over: I25 ML AND E. PLUM CK

0.1 MI W OF WILCOX, Douglas, CO

Built 2001 Load: 36.1 t ADT: 6,973

I 76 ML WBND

Good

Over: BNSF RR RTD Light Rail

.2 MI W OF PECOS STREET, Adams, CO

Built 1989 Load: 36.1 t ADT: 38,500

B STREET

Good

Over: FISHERS CANYON CREEK

0.3 MI N OF ACADEMY BLVD, El Paso, CO

Built 1978 Load: 36.1 t ADT: 862

RAMP TO I 25 SBND

Good

Over: COUNTY LINE ROAD R

.85 MI N. JCT I-25 &, Douglas, CO

Built 1991 Load: 36.1 t ADT: 85,500

Prospect Road

Good

Over: Cache La Poudre Overflow

0.7 Mi. E of Sharp Point, Larimer, CO

Built 2006 Load: 36.1 t ADT: 22,557

TRAIL GULCH ROAD

Good

Over: GYPSUM CREEK

JUST NE OF US 6, Eagle, CO

Built 1992 Load: 36.1 t ADT: 363

COUNTY RD 41.7

Good

Over: SARCILLO CANYON CREEK

2.5 MI N OF SH 12, Las Animas, CO

Built 1999 Load: 36.1 t ADT: 157

COUNTY ROAD 430A

Good

Over: RIO GRANDE RIVER

0.4 MI W OF RIVERSIDE MES, Mineral, CO

Built 1998 Load: 36.1 t ADT: 26

CITY ST.-COLUMBIA

Good

Over: CORNET CREEK

200 FT E of N COMET ST, San Miguel, CO

Built 1988 Load: 36.1 t ADT: 596

EB HIGH POINT BLVD

Good

Over: SECOND CREEK TRIB

0.3 MI E OF TOWER RD, Denver, CO

Built 2020 Load: 36.2 t ADT: 1

SQUIRREL CRK RD

Good

Over: CHICO CREEK

1.1 MI W OF MILNE RD, El Paso, CO

Built 1965 Load: 36.2 t ADT: 560

RAMP/EVANS AVE NW

Good

Over: RAMP TO EVANS AVE[NW] R

2.10 MI N OF JCT US 285, Denver, CO

Built 1986 Load: 36.2 t ADT: 76,000

County Road 80C

Good

Over: Laramie River

0.3 Mi W of Co Rd 103, Larimer, CO

Built 1999 Load: 36.2 t ADT: 13

CO RD NO. 26

Good

Over: SNEFFELS CREEK

4.7 MI SW OF OURAY, Ouray, CO

Built 2001 Load: 36.2 t ADT: 108

SH 12 ML

Good

Over: WHISKEY CREEK

0.5 MI SE OF MONUMENT PAR, Las Animas, CO

Built 1937 Load: 36.2 t ADT: 320

County Road 77

Good

Over: Willow Creek

1.0 Mi N of Co Rd 100, Weld, CO

Built 1990 Load: 36.2 t ADT: 218

LOWELL BLVD

Good

Over: LITTLE DRY CREEK

0.3 MILE SOUTH OF 72ND AV, Adams, CO

Built 1986 Load: 36.2 t ADT: 8,969

SPRAGUE LAKE ROAD

Good

Over: GLACIER CREEK

0.2 miles from Bear Lake, Larimer, CO

Built 2004 Load: 36.3 t ADT: 500

Iris Avenue/34 St

Good

Over: Wonderland Creek

Iris Ave and 34th St., Boulder, CO

Built 2017 Load: 36.3 t ADT: 1,937

WOODMEN RD EBND

Good

Over: SAND CREEK

.1 MI W OF MARKSHEFFEL RD, El Paso, CO

Built 2009 Load: 36.3 t ADT: 36,984

WOODMEN RD WBND

Good

Over: SAND CREEK

.1 MI W OF MARKSHEFFEL RD, El Paso, CO

Built 2009 Load: 36.3 t ADT: 34,229

I 25 ML

Good

Over: FOX STREET

IN DENVER, Denver, CO

Built 1949 Load: 36.3 t ADT: 242,000

Showing 7,001-7,050 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.