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

OLD STAGECOACH RD

Fair

Over: N FK S PLATTE RIVER

W OF BAILEY - S OF SH285, Park, CO

Built 1999 Load: 36.8 t ADT: 44

COUNTY ROAD 7S

Fair

Over: EMPIRE CANAL

.3 MI E OF CR 4E, Rio Grande, CO

Built 1968 Load: 36.8 t ADT: 41

FSR 703.1

Fair

Over: HOMESTAKE CREEK

0.5 MI W OF STH 24, Eagle, CO

Built 2011 Load: 36.9 t ADT: 117

COUNTY ROAD 252

Fair

Over: ANIMAS RIVER

.3 MI SE OF SH 550, La Plata, CO

Built 1983 Load: 36.9 t ADT: 1,734

US 287 ML

Fair

Over: STONEWALL CREEK

13.7 MILES NORTH OF TEDS, Larimer, CO

Built 1963 Load: 36.9 t ADT: 3,900

SB AIRPORT BLVD

Fair

Over: SAND CREEK

0.5 MI NORTH OF COLFAX, Adams, CO

Built 1991 Load: 36.9 t ADT: 16,295

DARTMOUTH AVENUE

Fair

Over: WEST TOLLGATE CREEK

JUST E OF VENTURA STREET, Arapahoe, CO

Built 2000 Load: 36.9 t ADT: 6,440

SH 119 ML

Fair

Over: SOUTH BOULDER CREEK

ROLLINSVILLE, Gilpin, CO

Built 1989 Load: 36.9 t ADT: 3,100

SH 71 ML

Fair

Over: OTERO CANAL

2.7 MI NORTH OF JCT SH 10, Otero, CO

Built 1941 Load: 36.9 t ADT: 650

County Road 55

Fair

Over: Larson Draw

0.4 Mi N of US Hwy 138, Logan, CO

Built 1987 Load: 36.9 t ADT: 85

County Road 27

Fair

Over: Buckhorn Creek

2.9 Mi NW of Masonville, Larimer, CO

Built 1960 Load: 36.9 t ADT: 751

I 25 ML

Fair

Over: DRAW

2 MI NO OF JCT SH 165, Pueblo, CO

Built 1926 Load: 36.9 t ADT: 15,000

County Road 4

Fair

Over: Little Snake River

28.4 Mi West of St Hwy 13, Moffat, CO

Built 1976 Load: 36.9 t ADT: 288

COUNTY ROAD EE.5

Fair

Over: CATLIN CANAL

.4 MI E OFCR 18, Otero, CO

Built 1994 Load: 36.9 t ADT: 304

CR 327 (AVONDALE)

Fair

Over: ARKANSAS RIVER

0.3 MI S OF SH 50, Pueblo, CO

Built 2005 Load: 36.9 t ADT: 933

WOODLAND AVENUE

Fair

Over: FOUNTAIN CREEK

1.8 MI S OF WOODLAND PARK, Teller, CO

Built 1994 Load: 36.9 t ADT: 396

US 138 ML

Fair

Over: LEWIS CREEK

6.2 MI NE OF JCT SH 113, Logan, CO

Built 1993 Load: 37.0 t ADT: 690

I 76 ML EBND

Fair

Over: SH 144 ML

3.2 MI NE OF JCT US 34-B, Morgan, CO

Built 1959 Load: 37.0 t ADT: 8,000

VOYAGER PKWY

Fair

Over: KETTLE CREEK

0.6 MI N OF BRIARGATE, El Paso, CO

Built 1996 Load: 37.0 t ADT: 19,087

I 76 ML

Fair

Over: BURLINGTON CANAL

0.7 MI NE OF JCT SH 2, Adams, CO

Built 1957 Load: 37.0 t ADT: 32,000

I 225 RAMP

Fair

Over: PEDESTRIAN UNDERPASS

IN AURORA, Arapahoe, CO

Built 2003 Load: 37.0 t ADT: 136,000

I 70 ML WBND

Fair

Over: UP RR

9.7 MI W OF PARACHUTE, Mesa, CO

Built 1980 Load: 37.0 t ADT: 9,000

GRIZZLY DRIVE

Fair

Over: DEER CREEK

JUST S OF DEER CK CANYON, Jefferson, CO

Built 1978 Load: 37.0 t ADT: 554

I 70 ML WBND

Fair

Over: EAST SPRING CREEK

2.7 MI. W. OF Stratton, Kit Carson, CO

Built 1965 Load: 37.0 t ADT: 4,350

SH 141 ML

Fair

Over: MESA CREEK

10 MI NW OF URAVAN, Montrose, CO

Built 1958 Load: 37.0 t ADT: 260

County Road 23

Fair

Over: Wildcat Creek

0.3 Mi No of Co Rd W, Morgan, CO

Built 1995 Load: 37.0 t ADT: 150

COUNTY ROAD 310.2

Fair

Over: I 25 ML

6.5 MI N. OF AGUILAR, Huerfano, CO

Built 1959 Load: 37.0 t ADT: 121

CITY STREET-PINE

Fair

Over: SAN MIGUEL RIVER

500 FT S of SH145, San Miguel, CO

Built 1985 Load: 37.0 t ADT: 148

HUDSON ROAD

Fair

Over: HENRYLYNN CANAL

0.1 MI N OF 164TH, Adams, CO

Built 2006 Load: 37.1 t ADT: 572

CHAMBERS RD

Fair

Over: EAST TOLLGATE CREEK

0.3 MI S OF 6TH AVE, Arapahoe, CO

Built 1983 Load: 37.1 t ADT: 20,506

COUNTY ROAD 105

Fair

Over: OAKLAND SCHOOL GULCH

0.1 MI S WOLFENSBERGER RD, Douglas, CO

Built 1990 Load: 37.1 t ADT: 4,343

US 40 ML EBND

Fair

Over: HIGHLINE CANAL

1.7 E OF I225, Arapahoe, CO

Built 1935 Load: 37.1 t ADT: 10,500

County Road 55

Fair

Over: South Platte River

1.2 Mi S of Hwy 138, Logan, CO

Built 1990 Load: 37.1 t ADT: 345

County Road 32C

Fair

Over: Buckhorn Creek Trib.

Just W of CR27, Larimer, CO

Built 2007 Load: 37.1 t ADT: 170

SH 10 ML

Fair

Over: SAUNDERS ARROYO

35 MI E OF WALSENBRG., Pueblo, CO

Built 1989 Load: 37.1 t ADT: 390

CASTLE CK RD/CR 15

Fair

Over: CASTLE CREEK

3.5 MI SOUTH OF CO 82, Pitkin, CO

Built 1989 Load: 37.1 t ADT: 750

COUNTY ROAD S8

Fair

Over: DOLORES RIVER

1.1 MI NW OF SLICK ROCK, San Miguel, CO

Built 1957 Load: 37.1 t ADT: 10

County Road 28

Fair

Over: Platte Valley Canal

0.1 Mi E of US Hwy 85, Weld, CO

Built 2005 Load: 37.1 t ADT: 154

County Road 52

Fair

Over: Latham Inlet Ditch

At Junct. CR 45, Weld, CO

Built 1998 Load: 37.1 t ADT: 390

County Road 70

Fair

Over: New Cache La Poudre Cana

0.3 Mi E of Co Rd 43, Weld, CO

Built 1988 Load: 37.1 t ADT: 333

County Road LL

Fair

Over: Arikaree River

1.75 M. N. of Co. Rd. 1, Washington, CO

Built 1998 Load: 37.1 t ADT: 16

WEST PORTAL DRIVE

Fair

Over: NORTH INLET

Road to Adams Falls, Grand, CO

Built 1950 Load: 37.2 t ADT: 924

COUNTY ROAD R13

Fair

Over: DOLORES RIVER

6.4 MI NW OF URAVAN, Montrose, CO

Built 1953 Load: 37.2 t ADT: 253

SH 13 ML

Fair

Over: YAMPA RIVER

2 MI S. OF CRAIG, Moffat, CO

Built 1972 Load: 37.2 t ADT: 2,800

WILCOX STREET

Fair

Over: SELLARS GULCH

S OF 2ND ST INTERSECTION, Douglas, CO

Built 1987 Load: 37.2 t ADT: 9,964

WB UINTAH ST

Fair

Over: MONUMENT CREEK

.1 MI E OF I-25, El Paso, CO

Built 2001 Load: 37.2 t ADT: 17,630

US 85 ML

Fair

Over: LEE GULCH

IN LITTLETON, Arapahoe, CO

Built 1939 Load: 37.2 t ADT: 44,000

I 25SB RMP C470 WB

Fair

Over: RMP TO I25 SBND RTD

SB ONRAMP N.OF C470, Douglas, CO

Built 1983 Load: 37.2 t ADT: 47,000

SH 59 ML

Fair

Over: BUFFALO CREEK

4.3 MI N OF SEIBERT, Kit Carson, CO

Built 1957 Load: 37.2 t ADT: 640

US 24 BUSINESS RT

Fair

Over: FOUNTAIN CREEK

SOUTH OF CASCADE, El Paso, CO

Built 1932 Load: 37.2 t ADT: 1,300

Showing 3,751-3,800 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.