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 25

Good

Over: MCELMO CREEK

.9 MI N OF CR G, Montezuma, CO

Built 1997 Load: 34.7 t ADT: 1,392

RAINBOW AVENUE

Good

Over: HOFFMAN DRAINAGE

0.1 MI S OF 88TH AVE., Adams, CO

Built 2017 Load: 34.7 t ADT: 1,656

DEVONSHIRE BLVD

Good

Over: HOFFMAN DRAINAGE

0.2 MI S OF 88TH AVE., Adams, CO

Built 2020 Load: 34.7 t ADT: 8,171

US 34 ML EBND

Good

Over: LOVELAND-GREELEY CANAL

1.2 MI E OF JCT US 287, Larimer, CO

Built 1965 Load: 34.7 t ADT: 22,000

WB AURARIA PKWY

Good

Over: 5TH STREET AND RAILROADS

WB AURARIA PKWY RAMP, Denver, CO

Built 1987 Load: 34.7 t ADT: 12,760

US 40 ML

Good

Over: BIG MUDDY CREEK

15.9 MI SE OF JCT SH 14, Grand, CO

Built 1988 Load: 34.7 t ADT: 2,300

US 34 ML

Good

Over: COLORADO RIVER

3.6 MI NO OF GRANBY, Grand, CO

Built 1999 Load: 34.7 t ADT: 6,300

I 25 ML SBND

Good

Over: WELD COUNTY ROAD 10

4.0 MI N OF WELD-ADAMS CL, Weld, CO

Built 2004 Load: 34.7 t ADT: 51,000

US 36 ML

Good

Over: RAMP B & BIKEPATH

1.5 MI E. OF SUPERIOR, Boulder, CO

Built 2001 Load: 34.7 t ADT: 68,000

STEELE ST.

Good

Over: I 70 ML

0.47 MI W of CO BLVD, Denver, CO

Built 2020 Load: 34.7 t ADT: 19,000

E-470 EB

Good

Over: Parker Road

5.25 MI FROM I25, Douglas, CO

Built 1996 Load: 34.7 t ADT: 24,375

E-470 WB

Good

Over: Parker Road

5.25 MI FROM I25, Douglas, CO

Built 1996 Load: 34.7 t ADT: 25,943

US 6 ML

Good

Over: EAGLE RIVER

6.5 MI E OF EAGLE, Eagle, CO

Built 2001 Load: 34.7 t ADT: 3,400

RAMP TO I 25 SBND

Good

Over: RAMP TO I 25 NBND R

I25 US40 SH33 INTCHNG, Denver, CO

Built 1988 Load: 34.7 t ADT: 117,500

LaPorte Avenue

Good

Over: Larimer Co. Canal No. 2

Junction with Frey Avenue, Larimer, CO

Built 1989 Load: 34.7 t ADT: 4,980

SH 92 ML

Good

Over: UP RR (HIGHWAY OVERPASS)

14.2 MI NE OF DELTA, Delta, CO

Built 2017 Load: 34.7 t ADT: 4,100

US 24 ML EBND

Good

Over: CIRCLE DR SPRING CREEK

US24 OVER S CIRCLE DR, El Paso, CO

Built 1993 Load: 34.7 t ADT: 21,000

US 24 ML WBND

Good

Over: CIRCLE DR SPRING CREEK

US24 OVER S CIRCLE DR, El Paso, CO

Built 1993 Load: 34.7 t ADT: 21,000

US 50 ML

Good

Over: GRANADA CREEK

2.8 MI EAST OF GRANADA, Prowers, CO

Built 2015 Load: 34.7 t ADT: 1,900

County Road 33.5

Good

Over: N Sterling Inlet Canal

0.2 Mi S of Co Rd 38, Logan, CO

Built 1997 Load: 34.7 t ADT: 33

County Road W

Good

Over: Riverside Canal

1.9 Mi E of Co Rd 13, Morgan, CO

Built 2010 Load: 34.7 t ADT: 458

COUNTY ROAD 21

Good

Over: MIDDLE PLUM CREEK

.5 MI S OF CR N, Prowers, CO

Built 1999 Load: 34.7 t ADT: 28

County Road 8

Good

Over: Sand Creek

0.2 Mi. E of Co. Rd. 57, Sedgwick, CO

Built 1988 Load: 34.7 t ADT: 2

County Road 70

Good

Over: Lone Tree Creek

0.35 Mi E of Co Rd 43, Weld, CO

Built 1983 Load: 34.7 t ADT: 333

Ronald Reagan Ave.

Good

Over: Boxelder Creek

West of 3rd Street, Larimer, CO

Built 2005 Load: 34.7 t ADT: 744

NELSON STREET

Good

Over: LENA GULCH

.1 MI SOUTH OF 38TH AVE, Jefferson, CO

Built 1986 Load: 34.7 t ADT: 514

COUNTY ROAD 203

Good

Over: HERMOSA CREEK

.1 MI W of SH 550, La Plata, CO

Built 1989 Load: 34.8 t ADT: 454

COUNTY ROAD 19

Good

Over: LA JARA CREEK

.6 MI N OF CR Y.5, Conejos, CO

Built 1997 Load: 34.8 t ADT: 30

US 24 ML

Good

Over: RULE CREEK

0.9 MI NE OF DIVIDE, Teller, CO

Built 2004 Load: 34.8 t ADT: 18,000

High Plains Road

Good

Over: Greeley Loveland Canal

0.1 Mi N of US Hwy 34, Larimer, CO

Built 1986 Load: 34.8 t ADT: 212

US 350 ML

Good

Over: Draw

7 MI NE OF JCT SH 71, Otero, CO

Built 2002 Load: 34.8 t ADT: 320

WB MAINSTREET

Good

Over: CHERRY CREEK

1.0 MI W OF HWY 83, Douglas, CO

Built 1987 Load: 34.8 t ADT: 12,244

CO RD 714(GARNETT)

Good

Over: ROCKY FORD CANAL

.8 MI W OF 67TH LN, Pueblo, CO

Built 1998 Load: 34.8 t ADT: 42

PINE CREST DR

Good

Over: SKI RUN

JUST E OF PINE CREST LN, Pitkin, CO

Built 1998 Load: 34.8 t ADT: 54

County Road 15

Good

Over: Big Dry Creek

0.6 Mi. N. of Co. Rd. 2, Weld, CO

Built 2003 Load: 34.8 t ADT: 86

N. BANNOCK ST

Good

Over: CHERRY CREEK

BANNOCK ST AT SPEER BLVD, Denver, CO

Built 1989 Load: 34.9 t ADT: 5,456

COUNTY ROAD 3850D

Good

Over: GRAND VIEW DITCH

0.7 MI SW OF CRAWFORD, Delta, CO

Built 1996 Load: 34.9 t ADT: 553

I 76 ML WBND

Good

Over: SOUTH PLATTE RIVER

1.9 MI SW OF JCT US 85, Adams, CO

Built 2013 Load: 34.9 t ADT: 42,000

SH 96 WB

Good

Over: RDWY RR ARKANSAS RVR

4th St 2.4 MI E OF SH45, Pueblo, CO

Built 2011 Load: 34.9 t ADT: 13,500

US 50 ML WBND

Good

Over: APISHAPA RIVER

4.2 MI EAST OF FOWLER, Otero, CO

Built 1997 Load: 34.9 t ADT: 2,350

CR 215/FOX LN

Good

Over: SOUTH CREEK

0.8 MI SE OF BEULAH, Pueblo, CO

Built 1994 Load: 34.9 t ADT: 84

COUNTY ROAD 57P

Good

Over: FALL CREEK

2 MI S OF SH 141, San Miguel, CO

Built 1994 Load: 34.9 t ADT: 179

NFSR 106.1

Good

Over: EAST BRANCH WILLOW CREEK

1.4 MI INT 106 & SH 125, Jackson, CO

Built 2012 Load: 35.0 t ADT: 50

FDR 400

Good

Over: WEST BRUSH CREEK LOWER

NO DATA ENTERED, Eagle, CO

Built 2015 Load: 35.0 t ADT: 50

NFSR 600.1

Good

Over: DEEP CREEK

INLET TO DEEP LAKE, Garfield, CO

Built 2019 Load: 35.0 t ADT: 50

HICKORY ROAD

Good

Over: MONTROSE CANAL

AT INTERSECTION CR 5550, Montrose, CO

Built 2012 Load: 35.0 t ADT: 300

IRR# CO RD 700A

Good

Over: STOLLSTEIMER CREEK

.1 MI S OF SH 160, Archuleta, CO

Built 2012 Load: 35.0 t ADT: 1,276

WB HIGH POINT BLVD

Good

Over: SECOND CREEK TRIB

0.3 MI E OF TOWER RD, Denver, CO

Built 2020 Load: 35.0 t ADT: 1

E-470 Ramp H

Good

Over: E-470 RMP B

1000 feet south Colfax, Arapahoe, CO

Built 2005 Load: 35.0 t ADT: 4,800

COUNTY ROAD 346

Good

Over: CUCHARAS RIVER

1.4 MI SOUTH OF US 160, Huerfano, CO

Built 1997 Load: 35.0 t ADT: 49

Showing 6,801-6,850 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.