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 GG

Fair

Over: LITTLE BEAVER CREEK

1.2 MILES EAST OF ROAD 55, Kit Carson, CO

Built 1960 Load: 17.3 t ADT: 3

County Road 33

Fair

Over: N. Sterling Inlet Canal

0.3 Mi N of Co Rd 32, Logan, CO

Built 1940 Load: 17.3 t ADT: 61

COUNTY ROAD 14.5

Fair

Over: ROCKY FORD CANAL

.9 MI N OF SH 50, Otero, CO

Built 1998 Load: 17.3 t ADT: 29

County Road 10

Fair

Over: Denver Hudson Canal

0.1 Mi E of Co Rd 51, Weld, CO

Built 1982 Load: 17.3 t ADT: 24

CR 124A

Fair

Over: La Plata River

9.4 Mi N of Junc w/ US160, La Plata, CO

Built 2018 Load: 17.4 t ADT: 1

SH 125 ML

Fair

Over: WILLOW CREEK

14.3 MI N OF US 40/GRANBY, Grand, CO

Built 1952 Load: 17.4 t ADT: 900

6TH AVE

Fair

Over: CHERRY CREEK

6TH AVE AT SPEER BLVD, Denver, CO

Built 1956 Load: 17.4 t ADT: 19,356

SPEER BLVD NBND

Fair

Over: I 25 ML

IN DENVER, Denver, CO

Built 1952 Load: 17.4 t ADT: 13,751

County Road 21

Fair

Over: Riverside Canal

0.7 Mi N of Co Rd V, Morgan, CO

Built 1987 Load: 17.4 t ADT: 33

IRR# CO.RD. J

Fair

Over: MCELMO CREEK

8.1 MI W OF CORTEZ, Montezuma, CO

Built 1930 Load: 17.5 t ADT: 62

COUNTY ROAD AA.5

Fair

Over: LONE ROCK DRAW

W OF CR 24.3, Baca, CO

Built 1960 Load: 17.5 t ADT: 37

US 287 ACCESS

Fair

Over: LOUDEN CANAL

3.5 MI N OF JCT US 34, Larimer, CO

Built 1950 Load: 17.5 t ADT: 52

SH170 ML(McCaslin)

Fair

Over: US 36 ML

3.9 MI E OF JCT SH 93, Boulder, CO

Built 1983 Load: 17.5 t ADT: 24,000

I 25 ML

Fair

Over: W. MYRTLE PL. / RR

JUST N. OF 13TH AVE, Denver, CO

Built 1956 Load: 17.5 t ADT: 235,000

SH 30 ML/HAMPDEN

Fair

Over: GOLDSMITH GULCH

AT TIFFANY PLAZA IN DENVE, Denver, CO

Built 1965 Load: 17.5 t ADT: 42,000

US 385 ML

Fair

Over: DRAW

16.0 MI NE OF JCT US 40, Cheyenne, CO

Built 1958 Load: 17.5 t ADT: 730

River Rim Road

Fair

Over: Big Thompson River

20 Ft S of US Hwy 34, Larimer, CO

Built 1977 Load: 17.5 t ADT: 380

Rocky River Road

Fair

Over: Big Thompson River

40 Ft S of US Hwy 34, Larimer, CO

Built 1977 Load: 17.5 t ADT: 1

Rose Hall Way

Fair

Over: Big Thompson River

35 Ft S of US Hwy 34, Larimer, CO

Built 1977 Load: 17.5 t ADT: 11

LA JUNTA 14TH ST.

Fair

Over: KING ARROYO

1000 FEET W ADAMS AVE, Otero, CO

Built 1991 Load: 17.5 t ADT: 568

IRR BIA RTE 101

Fair

Over: LOS PINOS RIVER

0.4 KM E. OF JCT 322 &172, La Plata, CO

Built 1955 Load: 17.6 t ADT: 200

US 287 ML

Fair

Over: LARIMER-WELD CANAL

0.2 MI S of SH1, Larimer, CO

Built 1949 Load: 17.6 t ADT: 24,000

US 385 ML

Fair

Over: FRENCHMAN CREEK

IN HOLYOKE, Phillips, CO

Built 1949 Load: 17.6 t ADT: 1,900

COUNTY LANE 17

Fair

Over: BOB CREEK

.8 MI N OF ROAD D, Crowley, CO

Built 1978 Load: 17.6 t ADT: 21

RETURN ROAD

Fair

Over: PLATTE AVENUE

0.3 MI E OF NEVADA AVENUE, El Paso, CO

Built 1939 Load: 17.6 t ADT: 16,596

CO RD 727

Fair

Over: OHIO CREEK

Just west of CR 730, Gunnison, CO

Built 1960 Load: 17.6 t ADT: 79

COUNTY ROAD 57

Fair

Over: MIDDLE BEAVER CREEK

0.8 MILES NORTH OF ROAD V, Kit Carson, CO

Built 1965 Load: 17.6 t ADT: 70

88TH AVENUE

Fair

Over: SAND CREEK TRIB

1.5 MI EAST OF HWY 79, Adams, CO

Built 1995 Load: 17.7 t ADT: 542

COUNTY ROAD 221

Fair

Over: SOUTH ARKANSAS RIVER

.2 MI SW of CR 220, Chaffee, CO

Built 1954 Load: 17.7 t ADT: 77

KIPLING PARKWAY AR

Fair

Over: MASSEY DRAW AR

.1 MI N.OF JCT470&KIPLING, Jefferson, CO

Built 1987 Load: 17.7 t ADT: 49,000

COUNTY ROAD D

Fair

Over: N FORK MUSTANG CREEK

2.3 MILES WEST OF ROAD 32, Lincoln, CO

Built 1940 Load: 17.7 t ADT: 2

County Road 52

Fair

Over: Larimer & Weld Canal

1.2 Mi East of I-25, Larimer, CO

Built 1975 Load: 17.7 t ADT: 706

County Road W

Fair

Over: Wildcat Creek

0.1 Mi E of Co Rd 23, Morgan, CO

Built 1979 Load: 17.7 t ADT: 135

COUNTY ROAD 21

Fair

Over: CATLIN CANAL

.2 MI N OF CR CC, Otero, CO

Built 1965 Load: 17.7 t ADT: 104

3316: MILL CK CAMP

Fair

Over: Lake Fork Gunnison River

8 mi SW Lake San Cristoba, Hinsdale, CO

Built 1967 Load: 17.8 t ADT: 50

HCL+PGL BRT Guide

Fair

Over: Mail Creek

100 ft S of W Co. Rd 38, Larimer, CO

Built 2019 Load: 17.8 t ADT: 295

COUNTY RD 18.3

Fair

Over: RATON CREEK

.1 MI N OF CR 69.0, Las Animas, CO

Built 1966 Load: 17.8 t ADT: 643

County Road 46

Fair

Over: Unnamed Drainage Ditch

0.3 Mi E of Co Rd 53, Logan, CO

Built 1998 Load: 17.8 t ADT: 91

CR 273/APACHE CITY

Fair

Over: GRANEROS CREEK

4.3 MI ESE OF RYE, Pueblo, CO

Built 1928 Load: 17.8 t ADT: 170

IRR# CO.RD. G

Fair

Over: YELLOW JACKET CREEK

25.0 MI W OF SH 160, Montezuma, CO

Built 1971 Load: 17.9 t ADT: 436

74TH AVENUE

Fair

Over: CROKE CANAL

.1 MI W OF CARR STREET, Jefferson, CO

Built 1955 Load: 17.9 t ADT: 3,181

COUNTY ROAD RR

Fair

Over: TRIB. OF TWO BUTTES CRK

2.2 MI E OF CR 12, Baca, CO

Built 1950 Load: 17.9 t ADT: 17

County Road 7

Fair

Over: Sullivan Ditch

0.7 Mi N of Co Rd 16, Weld, CO

Built 1950 Load: 17.9 t ADT: 2,211

SH 94 ML

Fair

Over: DRAW

9.6 MI E OF US24, El Paso, CO

Built 1985 Load: 17.9 t ADT: 4,400

US 50 ML

Fair

Over: DRAW

15.3 MI SE OF SALIDA, Fremont, CO

Built 1934 Load: 17.9 t ADT: 3,600

US 350 ML

Fair

Over: DRAW

8.3 MI NE OF TYRONE, Las Animas, CO

Built 1935 Load: 17.9 t ADT: 470

US 285 ML

Fair

Over: CONEJOS RIVER

2.5 MI N OF ANTONITO, Conejos, CO

Built 1929 Load: 17.9 t ADT: 3,200

COUNTY ROAD 29

Fair

Over: MONTE VISTA CANAL

.8 MI W OF SH15 GUNBARREL, Rio Grande, CO

Built 1971 Load: 17.9 t ADT: 20

COUNTY ROAD 2E

Fair

Over: MONTE VISTA CANAL

.1 MI S of SH 370, Rio Grande, CO

Built 1970 Load: 17.9 t ADT: 44

COUNTY ROAD 4W

Fair

Over: RIO GRANDE CANAL

.2 MI S OF CR 7N, Rio Grande, CO

Built 1962 Load: 17.9 t ADT: 78

Showing 351-400 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.