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

US 50 ML EBND

Fair

Over: TIMPAS CREEK

.8 MI W. OF SWINK, Otero, CO

Built 1958 Load: 9.5 t ADT: 4,700

County Road 343

Fair

Over: West Divide Creek

500Ft West of Co Road 311, Garfield, CO

Built 1945 Load: 9.6 t ADT: 27

CR 4110

Fair

Over: NORTH FORK GUNNISON RVR

1.6 MI NE OF PAONIA, Delta, CO

Built 1930 Load: 9.7 t ADT: 310

County Road 330

Fair

Over: Williams Fork River

Over Inlet to Reservoir, Grand, CO

Built 1929 Load: 9.9 t ADT: 166

FSR 630

Fair

Over: HEARTLK SPILLWAY DEEP CR

27.3 MILES NW OF DOTSERO, Garfield, CO

Built 1954 Load: 10.0 t ADT: 30

COUNTY ROAD N

Fair

Over: TIMPAS CREEK

.1 MI E OF CR 16.5, Otero, CO

Built 1935 Load: 10.0 t ADT: 22

COUNTY ROAD 805

Fair

Over: FT.LYON STG CANAL SLUICE

.8 MI W OF SH 71, Otero, CO

Built 1968 Load: 10.2 t ADT: 13

COUNTY ROAD Y

Fair

Over: NORTH FORK SAND ARROYO

.8 MI W OF CR 6, Baca, CO

Built 1960 Load: 10.3 t ADT: 1

COUNTY ROAD Q

Fair

Over: WEST CARRIZO CREEK

1.2 MI E OF CR 0, Baca, CO

Built 1935 Load: 10.3 t ADT: 23

ALLEY

Fair

Over: EAST HARVARD GULCH

BTWN LAFAYETTE AND HUMB, Denver, CO

Built 1967 Load: 10.3 t ADT: 39

County Road 43H

Fair

Over: Little Thompson River

0.1 Mi N of Co Rd 45B, Larimer, CO

Built 1960 Load: 10.3 t ADT: 97

FDR 205

Fair

Over: N FK WHITE RV

NO DATA ENTERED, Garfield, CO

Built 1953 Load: 10.4 t ADT: 3

COUNTY RD 87.0

Fair

Over: MODEL DITCH

JUST N OF CR 42.5, Las Animas, CO

Built 1950 Load: 10.4 t ADT: 39

COUNTY ROAD N

Fair

Over: SOUTH DRY CREEK

.1 MI E OF CR 14, Otero, CO

Built 1965 Load: 10.4 t ADT: 15

BERRIDGE ROAD

Fair

Over: LITTLE HORSE CREEK

0.1 MI N OF CORONA ROAD, El Paso, CO

Built 1935 Load: 10.5 t ADT: 14

JOHNSON ROAD

Fair

Over: STEELS FORK CREEK

1.0 MI N OF HIGHWAY 94, El Paso, CO

Built 1935 Load: 10.5 t ADT: 35

US 160 ML

Fair

Over: HILLSIDE

15.5 MI EAST OF JCT SH 84, Mineral, CO

Built 1981 Load: 10.5 t ADT: 2,900

COUNTY ROAD 69.1

Fair

Over: RATON CREEK

.1 MI SE CR 69.1 STRKVILE, Las Animas, CO

Built 2000 Load: 10.6 t ADT: 12

County Road 63

Fair

Over: Wildhorse Draw

0.2 Mi S of Co Rd 72, Logan, CO

Built 1992 Load: 10.6 t ADT: 28

County Road 12

Fair

Over: Sand Creek

0.7 Mi. E. of Co. Rd. 51, Sedgwick, CO

Built 1962 Load: 10.6 t ADT: 10

Devereux AC To RR

Fair

Over: Colorado River

0.25 Miles South of I-70, Garfield, CO

Built 1966 Load: 10.7 t ADT: 3,211

Taft Hill Rd(Cr17)

Fair

Over: Big Thompson River

0.2 Mi N of 1st Street, Larimer, CO

Built 1978 Load: 10.7 t ADT: 21,217

County Road 83

Fair

Over: GREEN RIVER

2.9 Mi. S of St Hwy 318, Moffat, CO

Built 1954 Load: 10.9 t ADT: 36

JOYCE STREET

Fair

Over: RALSTON CREEK

0.06 MI NORTH OF 68TH AVE, Jefferson, CO

Built 1975 Load: 10.9 t ADT: 110

SH 157 ML

Fair

Over: BNSF RR

IN BOULDER, Boulder, CO

Built 1981 Load: 10.9 t ADT: 43,000

SPRING CREEK ROAD

Fair

Over: SPRING CREEK

11.4 MI NE OF ALMONT, Gunnison, CO

Built 1965 Load: 11.0 t ADT: 146

CANAL ROAD

Fair

Over: CATLIN CANAL

.1 MI N OF SH 50, Otero, CO

Built 1976 Load: 11.0 t ADT: 253

County Road 80

Fair

Over: Collins Lateral Ditch

0.6 Mi E of Co Rd 23, Weld, CO

Built 1957 Load: 11.0 t ADT: 304

OIL WELL ROAD

Fair

Over: MUSTANG CREEK

.6 MI S OF ALTA VISTA RD, El Paso, CO

Built 1935 Load: 11.1 t ADT: 20

COUNTY ROAD 300

Fair

Over: I 70 ML

PARACHUTE, Garfield, CO

Built 1982 Load: 11.1 t ADT: 9,806

County Road 80C

Fair

Over: N Frk Cache La Poudre Rv

2.6 Mi W of Co Rd 59, Larimer, CO

Built 1965 Load: 11.1 t ADT: 118

County Road 47

Fair

Over: Williams Fork River

JUST W of ST Hwy 13 MP 78, Moffat, CO

Built 1988 Load: 11.1 t ADT: 23

COUNTY ROAD 228

Fair

Over: FLORIDA CANAL

.1 MI S OF CR 225, La Plata, CO

Built 1964 Load: 11.2 t ADT: 1,172

FDR 106

Fair

Over: WILLOW CREEK

125 E OF CO HWY 125, Grand, CO

Built 1967 Load: 11.3 t ADT: 10

CR41.01-SPRUCE ST

Fair

Over: MANCOS RIVER

.1 MI S OF RIVERSIDE AVE, Montezuma, CO

Built 1991 Load: 11.4 t ADT: 171

C.R. HIDDEN VLY

Fair

Over: COTTONWOOD CREEK

0.2 MI E OF CR 40, Fremont, CO

Built 1917 Load: 11.5 t ADT: 21

COUNTY ROAD 37

Fair

Over: MIDDLE HORSE CREEK

.4 MI N OF CR UU, Prowers, CO

Built 1960 Load: 11.5 t ADT: 99

I 70 ML EBND

Fair

Over: MILLER CREEK

5.1 MI W OF VAIL PASS SUM, Eagle, CO

Built 1977 Load: 11.6 t ADT: 10,000

COUNTY RD 88.0

Fair

Over: TIMPAS CREEK

0.9 MI SW OF DELHI/SH 350, Las Animas, CO

Built 1963 Load: 11.6 t ADT: 31

COUNTY ROAD 543

Fair

Over: HUERFANO RIVER

0.1 MI S OF GARDNER, Huerfano, CO

Built 2004 Load: 11.7 t ADT: 106

I 270 ML

Fair

Over: US 6 ML

COMMERCE CITY, Adams, CO

Built 2000 Load: 11.8 t ADT: 93,000

County Road 50

Fair

Over: Gilmore Ditch

0.1 Mi E of Co Rd 47, Weld, CO

Built 1979 Load: 11.8 t ADT: 80

County Road 8

Fair

Over: Gordon Creek

0.2 Mi. E. of Co. Rd. GG, Washington, CO

Built 1969 Load: 11.8 t ADT: 26

County Road 22

Fair

Over: Arikaree River

2.20 Mi E of Co Rd KK, Yuma, CO

Built 1940 Load: 11.9 t ADT: 13

COUNTY ROAD 31

Fair

Over: ADOBE CREEK TRIB

2 MILES SOUTH OF ROAD S, Lincoln, CO

Built 1962 Load: 12.1 t ADT: 69

County Road 23

Fair

Over: Patent Creek

0.5 Mi No of Co Rd 2, Phillips, CO

Built 1966 Load: 12.1 t ADT: 25

County Road 23A

Fair

Over: White River

0.75 Mi N of St Hwy 64, Rio Blanco, CO

Built 1940 Load: 12.1 t ADT: 184

MCCLELLAND ROAD

Fair

Over: BIG SANDY CREEK TRIB.

0.35 MI S OF SWEET ROAD, El Paso, CO

Built 1965 Load: 12.2 t ADT: 111

Fifth Street

Fair

Over: White River

1 Blk. So of Water Street, Rio Blanco, CO

Built 1940 Load: 12.2 t ADT: 278

COUNTY ROAD JJ

Fair

Over: EAST HORSE CREEK

0.2 MI W OF CR 35, Prowers, CO

Built 1980 Load: 12.2 t ADT: 73

Showing 51-100 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.