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

Main St

Fair

Over: Mancos River

0.1 Mi South of 160B, Montezuma, CO

Built 2021 Load: 51.8 t ADT: 1,744

I 76 ML EBND

Fair

Over: SH 55 ML

CROOK INTERCHANGE, Logan, CO

Built 1966 Load: 51.9 t ADT: 3,800

RUSSELLVILLE ROAD

Fair

Over: RUSSELLVILLE GULCH

.25 MI N OF TOMICHI DR, Douglas, CO

Built 1990 Load: 51.9 t ADT: 3,065

US 40 ML

Fair

Over: DRAW

1.2 MI SE OF HUGO, Lincoln, CO

Built 1978 Load: 51.9 t ADT: 3,000

US 287 ML

Fair

Over: HORSE CREEK

9.6 MI N. OF SPRINGFIELD, Baca, CO

Built 1976 Load: 51.9 t ADT: 3,000

County Road 57

Fair

Over: Colorado River

200 Ft South of US Hwy 40, Grand, CO

Built 1990 Load: 52.1 t ADT: 59

NEWCOMBE COURT

Fair

Over: VAN BIBBER CREEK

JUST NORTH OF 58TH AVE, Jefferson, CO

Built 1979 Load: 52.1 t ADT: 379

BROOKHAVEN TR

Fair

Over: LOCAL DRAINAGE

Just W OF BROOKHAVEN LN, Arapahoe, CO

Built 2000 Load: 52.1 t ADT: 256

I 70 ML

Fair

Over: DRAW

2.0 MI E OF JCT S.H. 71, Lincoln, CO

Built 1955 Load: 52.2 t ADT: 10,000

I 25 ML SBND

Fair

Over: TIMBER CANYON

10.9 MI S. OF AGUILAR INT, Las Animas, CO

Built 1997 Load: 52.2 t ADT: 6,000

COUNTY ROAD 3A

Fair

Over: UNCOMPAHGRE RIVER

2.5 MI SE OF RIDGWAY, Ouray, CO

Built 1989 Load: 52.2 t ADT: 433

CR 212/N CK ROAD

Fair

Over: NORTH CREEK

1.0 MI ENE OF BEULAH, Pueblo, CO

Built 2002 Load: 52.2 t ADT: 202

County Road 35

Fair

Over: St. Vrain Creek

0.2 Mi S of Co Rd 10, Boulder, CO

Built 1996 Load: 52.3 t ADT: 78

COUNTY ROAD 182.1

Fair

Over: I 70 ML

3.8 MI E OF JCT US 6, Clear Creek, CO

Built 1973 Load: 52.3 t ADT: 3,639

47TH AVENUE

Fair

Over: MONTBELLO DITCH

JUST WEST OF HAVANA, Denver, CO

Built 1999 Load: 52.4 t ADT: 5,449

E 2ND STREET

Fair

Over: COAL CREEK

JUST E OF PETROLEUM AV, Fremont, CO

Built 1918 Load: 52.4 t ADT: 611

County Road 48

Fair

Over: Pleas. Valley Lake Canal

0.1 Mi W of Co Rd 21, Larimer, CO

Built 1993 Load: 52.4 t ADT: 231

COUNTY ROAD 350

Fair

Over: COTTONWOOD CREEK

1.0 MI WESTOF SH 24, Chaffee, CO

Built 1997 Load: 52.5 t ADT: 2,098

County Road 14

Fair

Over: North Fork White River

0.1 Mi E of Co Rd 8, Rio Blanco, CO

Built 2004 Load: 52.5 t ADT: 80

IRR# CO RD 500

Fair

Over: SAN JUAN RIVER

12.4 MI SW OF PAGOSA SPGS, Archuleta, CO

Built 1991 Load: 52.6 t ADT: 111

COLONY HILLS CIR

Fair

Over: MAIN STREAM

0.25 MI N OF DRENNAN ROAD, El Paso, CO

Built 1982 Load: 52.6 t ADT: 2,184

SH 95 ML

Fair

Over: LAKEWOOD GULCH

IN LAKEWOOD, Jefferson, CO

Built 1955 Load: 52.6 t ADT: 33,000

COUNTY ROAD 20.5

Fair

Over: ROCKY FORD CANAL

.2 MI S OF EE. 25 RD, Otero, CO

Built 1964 Load: 52.7 t ADT: 211

County Road 57

Fair

Over: Prewitt Inlet Canal

0.35 Mi. E. of Co. Rd. N, Washington, CO

Built 1994 Load: 52.9 t ADT: 29

CHERRY CREEK DR

Fair

Over: GOLDSMITH GULCH

E OF MONACO PKWY, Denver, CO

Built 1960 Load: 53.0 t ADT: 7,921

COUNTY ROAD M.80

Fair

Over: MACK WASH

.4 MI W OF CR 10.0, Mesa, CO

Built 2001 Load: 53.0 t ADT: 817

MCINTYRE STREET

Fair

Over: FARMERS HIGHLINE CANAL

1.6 MI N OF 44TH AVE, Jefferson, CO

Built 2019 Load: 53.1 t ADT: 17,056

COUNTY ROAD B

Fair

Over: RIO DE LOS PINOS

.8 MI S OF CR 12.5, Conejos, CO

Built 1993 Load: 53.2 t ADT: 82

YALE AVE

Fair

Over: GOLDSMITH GULCH

AT ONEIDA STREET, Denver, CO

Built 1995 Load: 53.2 t ADT: 15,901

COUNTY ROAD EE

Fair

Over: CATLIN CANAL

1.1 MI E OF CR 18, Otero, CO

Built 2023 Load: 53.2 t ADT: 550

US 50 ML

Fair

Over: POINT CREEK

10.0 MI SE OF MESA-DELTA, Delta, CO

Built 1977 Load: 53.3 t ADT: 9,300

I 25 ML NBND

Fair

Over: SH 119 ML

DEL CAMINO INTRCHG, Weld, CO

Built 1998 Load: 53.4 t ADT: 45,500

I 25 ML SBND

Fair

Over: SH 119 ML

3 MI SO OF JCT SH 66, Weld, CO

Built 1998 Load: 53.4 t ADT: 45,500

I 70 ML EBND

Fair

Over: BIG HORN ROAD

EAST VAIL INTERCHANGE, Eagle, CO

Built 1975 Load: 53.4 t ADT: 12,500

US 50 ML

Fair

Over: BNSF RR

W. EDGE OF LAS ANIMAS, Bent, CO

Built 1989 Load: 53.4 t ADT: 3,400

I 76 ML WBND

Fair

Over: COUNTY ROAD 67

8 MI SW OF CROOK, Logan, CO

Built 1966 Load: 53.5 t ADT: 3,800

I 76 ML EBND

Fair

Over: COUNTY ROAD 67

8 MI SW OF CROOK, Logan, CO

Built 1966 Load: 53.5 t ADT: 3,800

I25 SB OFF_ON RAMP

Fair

Over: CHEYENNE CREEK

IN COLORADO SPRINGS, El Paso, CO

Built 2003 Load: 53.5 t ADT: 44,000

County Road W

Fair

Over: Riverside Canal

1.0 Mi E of Co Rd 17, Morgan, CO

Built 1965 Load: 53.5 t ADT: 567

County Road 35

Fair

Over: Pawnee Ditch

20 Ft. N. of Sage Drive, Logan, CO

Built 1992 Load: 53.6 t ADT: 463

SH 69 ML

Fair

Over: NO NAME WASH

5.8 MILES NW OF FARISITA, Huerfano, CO

Built 1965 Load: 53.6 t ADT: 800

SH 266 ML

Fair

Over: HOLBROOK CANAL

4 MI NE OF ROCKY FORD, Otero, CO

Built 1937 Load: 53.7 t ADT: 330

I 70 ML EBND

Fair

Over: EAST BIJOU CREEK

8.8 MI E OF JCT US 36 (BY, Arapahoe, CO

Built 1965 Load: 53.9 t ADT: 6,000

MILITARY RES BNDRY

Fair

Over: Drainage channel

1.1 MI. S OF JCT W/ RTE 5, El Paso, CO

Built 1984 Load: 54.1 t ADT: 100

I 70 ML+FRONT RD

Fair

Over: DRAW

6.7 MI E. OF ARRIBA, Lincoln, CO

Built 1975 Load: 54.1 t ADT: 8,400

Airport Road CR25

Fair

Over: Left Hand Creek

50 Ft N of St Hwy 119, Boulder, CO

Built 2003 Load: 54.2 t ADT: 10,085

COUNTY ROAD 338

Fair

Over: COTTONWOOD CREEK

.2 MI NW OF CR 306, Chaffee, CO

Built 2005 Load: 54.2 t ADT: 231

I 76 ML WBND

Fair

Over: COUNTY ROADS 386 24.4

1.3 MI NE OF ROGGEN, Weld, CO

Built 1959 Load: 54.2 t ADT: 6,000

US 285 ML

Fair

Over: TURKEY CREEK

BELOW 285 & C470 INTE, Jefferson, CO

Built 1968 Load: 54.2 t ADT: 39,000

WB Harmony Road

Fair

Over: Fossil Crk. Res. Inlet

0.7 Mi. W of Jct I 25, Larimer, CO

Built 1973 Load: 54.2 t ADT: 25,324

Showing 4,801-4,850 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.