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

PINON ROAD

Good

Over: FOUNTAIN CREEK

2 MI NE EXIT 110 I-25, Pueblo, CO

Built 2004 Load: 25.3 t ADT: 217

County Road 29

Good

Over: Pierce Lateral Canal

0.7 Mi N of Co Rd 88, Weld, CO

Built 1989 Load: 25.3 t ADT: 1,615

SH 470 ML EBND

Good

Over: YOSEMITE STREET

4.5 M E OF JCT SH 177, Douglas, CO

Built 1984 Load: 25.4 t ADT: 47,500

SH 470 ML WBND

Good

Over: YOSEMITE STREET

.8 MI W OF JCT I 25, Douglas, CO

Built 1984 Load: 25.4 t ADT: 47,500

SH 65 ML

Good

Over: I 70 ML

10.3 MI N OF JCT SH 330, Mesa, CO

Built 1986 Load: 25.4 t ADT: 2,000

COUNTY ROAD 5/50

Good

Over: CEBOLLA CREEK

16.2 MI NE OF LAKE CITY, Hinsdale, CO

Built 1987 Load: 25.4 t ADT: 43

I 25 ML & Ramps

Good

Over: CHANNEL MD-B

LONGMONT/DACONO EXIT, Weld, CO

Built 2000 Load: 25.5 t ADT: 91,000

CO RD 8

Good

Over: DRAW AR

0.2 MI EAST OF I76, Weld, CO

Built 1983 Load: 25.5 t ADT: 1,153

SH 224 ML

Good

Over: SOUTH PLATTE RIVER

74TH AVE 1.25 MI W OF 6/8, Adams, CO

Built 1993 Load: 25.5 t ADT: 12,000

SH 114 ML

Good

Over: DRAW

4.8 MI NW OF 285/SAGUACHE, Saguache, CO

Built 1946 Load: 25.5 t ADT: 550

FDR 410

Good

Over: SOUTH FORK RIO GRANDE

11.2 MI SW OF SOUTH FORK, Mineral, CO

Built 1984 Load: 25.6 t ADT: 282

NFSR 315.1

Good

Over: N FK CRYSTAL RV

1.6 MI NE OF CRYSTAL, Gunnison, CO

Built 2008 Load: 25.6 t ADT: 15

County Road 66

Good

Over: Box Elder Creek

0.3 Mi E of CR 9, Larimer, CO

Built 1990 Load: 25.6 t ADT: 331

COUNTY ROAD J

Good

Over: HUNTER WASH

.8 MI E OF RD 20, Mesa, CO

Built 1988 Load: 25.6 t ADT: 945

Willow Run Pkwy

Good

Over: Local Drainage

Just S of Midway Blvd, Broomfield, CO

Built 1996 Load: 25.7 t ADT: 1,889

COUNTY ROAD 194

Good

Over: BOXELDER CREEK

0.2 MILES W OF CR 29, Elbert, CO

Built 1981 Load: 25.7 t ADT: 1,931

PINE CREST DR

Good

Over: SKI RUN

JUST W OF PINE CREST LN, Pitkin, CO

Built 1998 Load: 25.7 t ADT: 30

112TH AVENUE

Good

Over: COMANCHE CREEK

0.6 MI E OF HEADLIGHT RD, Adams, CO

Built 1997 Load: 25.8 t ADT: 253

SH 14 ML

Good

Over: LITTLE SAND CREEK

18.2 MI E OF JCT US 85, Weld, CO

Built 1963 Load: 25.8 t ADT: 2,300

BENCHMARK DRIVE

Good

Over: PEDESTRIAN / SKIER

CITY STREET - BENCHMARK, San Miguel, CO

Built 2000 Load: 25.8 t ADT: 57

County Road 67

Good

Over: S Fk Williams Fk River

2.9 Mi S of Co Rd 29, Routt, CO

Built 2018 Load: 25.9 t ADT: 29

US 287 ML

Good

Over: BURLINGTON RR

NEAR BERTHOUD, Larimer, CO

Built 2005 Load: 25.9 t ADT: 15,654

US 40 ML

Good

Over: RED WASH

12 MI. E. OF DINOSAUR, Moffat, CO

Built 1971 Load: 25.9 t ADT: 630

US 287 ML

Good

Over: ST VRAIN CREEK

IN LONGMONT, Boulder, CO

Built 2016 Load: 25.9 t ADT: 24,000

CAPITOL STREET

Good

Over: BRUSH CREEK

0.2 MI S BRUSH CREEK RD, Eagle, CO

Built 2001 Load: 25.9 t ADT: 1,343

US 24 ML

Good

Over: EAGLE RIVER

4 MI. S. OF MINTURN, Eagle, CO

Built 1991 Load: 25.9 t ADT: 2,800

SH 340 ML EBND

Good

Over: UP RR AND RIVERSIDE PKWY

W. SIDE OF GRAND JUNCTION, Mesa, CO

Built 1994 Load: 25.9 t ADT: 9,500

US50 RAMP

Good

Over: 4TH ST/UPPRR_N.FRK.BRNCH

US 50 ML @ Riverside Pkwy, Mesa, CO

Built 2010 Load: 25.9 t ADT: 8,455

SH 16 ML WBND

Good

Over: US 85 ML BNSF RR UP RR

0.8 MI E OF JCT I 25, El Paso, CO

Built 2009 Load: 25.9 t ADT: 18,500

N. Boyd Lake Ave

Good

Over: Greeley Loveland Canal

0.2 Mi N of U.S. Hwy 34, Larimer, CO

Built 2019 Load: 25.9 t ADT: 8,538

County Road V

Good

Over: Riverside Canal

0.3 Mi E of St Hwy 52, Morgan, CO

Built 2008 Load: 25.9 t ADT: 100

US 287 ML

Good

Over: NORTH BUTTE CREEK

26 miles South of Lamar, Prowers, CO

Built 1976 Load: 25.9 t ADT: 3,500

SH 239 ML

Good

Over: IRRIGATION CANAL

1 MI N OF TRINIDAD, Las Animas, CO

Built 2013 Load: 25.9 t ADT: 460

County Road 57

Good

Over: Geary Creek

0.7 Mi N of Co Rd 128, Weld, CO

Built 1993 Load: 25.9 t ADT: 121

County Road 120

Good

Over: CROW CREEK

1.3 MI E OF CR 83, Weld, CO

Built 2020 Load: 25.9 t ADT: 84

TOWER ROAD

Good

Over: I 70 ML

1.3 MI N OF JCT US 40, Adams, CO

Built 1989 Load: 26.0 t ADT: 32,149

COUNTY ROAD 15

Good

Over: RIO GRANDE CANAL

.8 MI N OF SH 112, Rio Grande, CO

Built 1986 Load: 26.0 t ADT: 168

County Road 72

Good

Over: Willow Creek

0.7 Mi E of Co Rd 49, Weld, CO

Built 1960 Load: 26.0 t ADT: 29

Crags Drive

Good

Over: Big Thompson River

50 Ft N of W Riverside, Larimer, CO

Built 1985 Load: 26.1 t ADT: 3,972

I 70 SERVICE RD

Good

Over: GRIZZLY CREEK SR

AT GRIZZLEY CREEK REST AR, Garfield, CO

Built 1991 Load: 26.1 t ADT: 911

County Road 30

Good

Over: Beaver Creek

0.8 Mi N of Co Rd D, Morgan, CO

Built 1987 Load: 26.1 t ADT: 8

COUNTY ROAD HH

Good

Over: JONES ARROYO

.3 MI E OF CR 12, Otero, CO

Built 2000 Load: 26.1 t ADT: 76

NFSR 660.1

Good

Over: S. FORK BIG CREEK

AT BIG CREEK LAKE CG, Jackson, CO

Built 1977 Load: 26.2 t ADT: 48

SH 47 ML SBND

Good

Over: CITY ST UP RR

JUST E. OF I25 IN PUEBLO, Pueblo, CO

Built 1984 Load: 26.2 t ADT: 16,500

Fall River Drive

Good

Over: Farmers Indepen. Ditch

250 Ft. N of U.S. Hwy 34, Larimer, CO

Built 1998 Load: 26.2 t ADT: 5,837

COUNTY ROAD 38.05

Good

Over: ORCHARD MESA CANAL

.3 MI S OF US 6, Mesa, CO

Built 1986 Load: 26.2 t ADT: 1,565

SH 184 ML

Good

Over: NARRAGUINNEP CANAL

1.28 MI E OF JCT US 491, Montezuma, CO

Built 2016 Load: 26.2 t ADT: 1,100

COUNTY ROAD JJ

Good

Over: OTERO CANAL

0.25 MI W OF CR 12, Otero, CO

Built 1965 Load: 26.2 t ADT: 142

EB 49TH AVENUE

Good

Over: SPRUCE STREET

EAST OF QUEBEC/I-270, Denver, CO

Built 2005 Load: 26.3 t ADT: 16,527

WB 49TH AVENUE

Good

Over: SPRUCE STREET

EAST OF QUEBEC/I-270, Denver, CO

Built 2005 Load: 26.3 t ADT: 17,023

Showing 5,651-5,700 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.