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 21

Good

Over: Greeley Canal No. 2

0.3 Mi N of St Hwy 392, Weld, CO

Built 2013 Load: 51.5 t ADT: 1,819

EAST CALEY DR

Good

Over: PINEY CREEK

0.1 MI NE OF E. EUCLID DR, Arapahoe, CO

Built 2012 Load: 51.6 t ADT: 249

Co Rd 28

Good

Over: Dead Horse Draw

150 Ft N of Co Rd Z, Morgan, CO

Built 2014 Load: 51.6 t ADT: 89

SADDLEROCK LN.

Good

Over: PINEY CREEK TRIB

200 FT E OF LIVERPOOL ST, Arapahoe, CO

Built 1998 Load: 51.7 t ADT: 1,730

SH 52 ML

Good

Over: WILDCAT CREEK

8 MI N OF I-76 Ft Morgan, Morgan, CO

Built 2009 Load: 51.7 t ADT: 1,200

County Road 21

Good

Over: Settlers Ditch

0.4 Mi. No. of Co. Rd. 32, Sedgwick, CO

Built 1999 Load: 51.7 t ADT: 1

County Road 31

Good

Over: Peterson Ditch

0.6 Mi. No. of Co. Rd. 32, Sedgwick, CO

Built 1999 Load: 51.7 t ADT: 21

JASMINE ROAD

Good

Over: COAL CREEK

Just W of CR 5800, Montrose, CO

Built 2016 Load: 51.8 t ADT: 488

I 25 ML NBND

Good

Over: SH 60 ML

2.1 MI SO OF JCT SH 402, Weld, CO

Built 2023 Load: 51.8 t ADT: 86,000

FARAWAY PLACE

Good

Over: EAST PLUM CREEK

ENT COLUMBINE OPEN SPACE, Douglas, CO

Built 2016 Load: 51.8 t ADT: 65

EBND I70 OFF RAMP

Good

Over: DENVER ROCK ISLAND RR

0.4 MI E of MONACO ST., Denver, CO

Built 2020 Load: 51.8 t ADT: 6,500

I 70 ML EBND

Good

Over: SH 35 ML

DENVER, Denver, CO

Built 2020 Load: 51.8 t ADT: 77,500

US 285 ML SBND

Good

Over: ELK CREEK ROAD

SHAFFERS CROSSING, Jefferson, CO

Built 2010 Load: 51.8 t ADT: 9,500

I 25 ML

Good

Over: WILDLIFE UNDERPASS

0.3 MI N OF GREENLAND RD, Douglas, CO

Built 2021 Load: 51.8 t ADT: 66,000

SH 78 ML

Good

Over: NORTH ST CHARLES RIVER

0.5 MI. E. OF BEULAH, Pueblo, CO

Built 2008 Load: 51.8 t ADT: 990

Willow Road

Good

Over: Monument Creek

0.35 Mi N of Baptist Rd, El Paso, CO

Built 2022 Load: 51.8 t ADT: 1,495

72ND AVENUE

Good

Over: LITTLE DRY CREEK

72ND AND RALEIGH, Adams, CO

Built 2017 Load: 51.8 t ADT: 14,357

I70 ML

Good

Over: 40TH AVE.

40th & Youngsfield, Jefferson, CO

Built 2009 Load: 51.9 t ADT: 104,000

Sky Pond Drive

Good

Over: Greeley Loveland Canal

0.1 Mi W of Centerra Pkwy, Larimer, CO

Built 2005 Load: 51.9 t ADT: 4,797

County Road 1

Good

Over: Larimer County Canal

0.5 Miles N of Co Rd 48, Larimer, CO

Built 2001 Load: 51.9 t ADT: 473

US 85 ML

Good

Over: DRAW

5.2 MI S OF WYOMING S.L., Weld, CO

Built 2012 Load: 52.1 t ADT: 3,000

N. 119th St (Cr 3)

Good

Over: St. Vrain Creek

0.5 Mi N of Co Rd 20, Boulder, CO

Built 1988 Load: 52.1 t ADT: 3,288

ILIFF AVE

Good

Over: GOLDSMITH GULCH

E OF MONACO PKWY, Denver, CO

Built 1971 Load: 52.1 t ADT: 1,550

COUNTY ROAD 387

Good

Over: HARDSCRABBLE CREEK

Just S OF SH 96, Custer, CO

Built 1993 Load: 52.2 t ADT: 74

160TH AVE

Good

Over: I-25

Just N of NWPkwy-470, Broomfield, CO

Built 2003 Load: 52.2 t ADT: 10,394

18.5 Road

Good

Over: LITTLE SALT WASH

0.1 SOUTH OF RD L, Mesa, CO

Built 2021 Load: 52.2 t ADT: 531

RAMP TO I 25 NBND

Good

Over: COUNTY LINE ROAD R

.85 MI N OF JCT I-25/470, Douglas, CO

Built 1991 Load: 52.3 t ADT: 85,500

Jerome Street

Good

Over: Lake Canal

200 Ft. N. of E Vine Dr., Larimer, CO

Built 2004 Load: 52.3 t ADT: 728

US 550 ML

Good

Over: BEAR CREEK

1.5 Mi S of OURAY, Ouray, CO

Built 2010 Load: 52.3 t ADT: 2,100

I 25 ML

Good

Over: EAST PLUM CREEK

3.9 MI N OF EL PASO-DOUGL, Douglas, CO

Built 1978 Load: 52.4 t ADT: 66,000

DECATUR STREET

Good

Over: LAKEWOOD GULCH

S DECATUR ST AT HOWARD PL, Denver, CO

Built 2013 Load: 52.5 t ADT: 4,940

US 40 ML

Good

Over: DRAW

0.3 MI E OF WILDHORSE, Cheyenne, CO

Built 1933 Load: 52.5 t ADT: 3,300

E. 37th Street

Good

Over: Dry Creek

0.1 Mi E. of Hwy 287, Larimer, CO

Built 2021 Load: 52.5 t ADT: 5,457

County Road 2

Good

Over: Gordon Creek

2.5 M. E. of Co. Rd. M, Washington, CO

Built 1995 Load: 52.6 t ADT: 6

COUNTY ROAD D.5

Good

Over: CONEJOS RIVER

4.3 MI SW OF LAS MESITAS, Conejos, CO

Built 1995 Load: 52.7 t ADT: 176

Vista Parkway

Good

Over: Coal Creek

0.5 Mi E of Co Line Rd, Weld, CO

Built 2004 Load: 52.7 t ADT: 8,974

I25 NBND ML

Good

Over: UNIVERSITY BLVD.

IN DENVER, Denver, CO

Built 2003 Load: 52.7 t ADT: 98,500

FDR 114

Good

Over: MIDDLE ST. VRAIN CREEK

.2 MI W OF CO HWY 72, Boulder, CO

Built 1952 Load: 52.8 t ADT: 198

SH 83 ML

Good

Over: HIGHLINE CANAL TRAIL

250 FT W of E MISSISSIPPI, Denver, CO

Built 2022 Load: 52.8 t ADT: 29,000

COUNTY ROAD V24

Good

Over: TABEGUACHE CREEK

.9 MI NE OF CR Z26, Montrose, CO

Built 1991 Load: 52.9 t ADT: 14

COUNTY ROAD 1600

Good

Over: UNCOMPAHGRE RIVER

1.1 MI N OF D25 ROAD, Delta, CO

Built 1986 Load: 52.9 t ADT: 1,427

WAGEMAN DRIVE

Good

Over: FOUNTAIN MUTUAL DITCH

JUST N OF BRADLEY ROAD, El Paso, CO

Built 2001 Load: 52.9 t ADT: 1,034

COUNTY ROAD 710

Good

Over: ROCKY FORD CANAL

.64 MI N OF SH 50, Pueblo, CO

Built 1998 Load: 52.9 t ADT: 11

CITY ST - MAPLE

Good

Over: SAN MIGUEL RIVER

50 FT S of SH145, San Miguel, CO

Built 2001 Load: 52.9 t ADT: 685

County Road 23

Good

Over: Pierce Lateral Canal

0.7 Mi N of St Hwy 14, Weld, CO

Built 1989 Load: 53.0 t ADT: 55

E-470 RAMP G

Good

Over: Relocated Third Creek

35.46 MI FROM I25, Adams, CO

Built 2001 Load: 53.1 t ADT: 2,700

GOLDEN LANE

Good

Over: FOUNTAIN CREEK

JUST WEST OF COLORADO AVE, El Paso, CO

Built 2018 Load: 53.1 t ADT: 209

COUNTY ROAD D

Good

Over: NO THOROUGHFARE CANYON

JUST S OF MONUMENT ROAD, Mesa, CO

Built 2010 Load: 53.1 t ADT: 1,991

County Road 56

Good

Over: Larimer County Canal

50 Ft E of Co Rd 21C, Larimer, CO

Built 1989 Load: 53.1 t ADT: 642

Lowell Street

Good

Over: Local Drainage

.2 Mi N of 136th Avenue, Broomfield, CO

Built 1998 Load: 53.2 t ADT: 12,221

Showing 8,051-8,100 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.