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

I 25 ML SBND

Fair

Over: US 160C ML

IN TRINIDAD/Goddard Ave., Las Animas, CO

Built 1968 Load: 31.1 t ADT: 8,000

County Road 57

Fair

Over: White River

0.10 Mi S of Co Rd 8, Rio Blanco, CO

Built 1986 Load: 31.1 t ADT: 145

88TH AVENUE

Fair

Over: BEAR CREEK TRIB

0.9 MI E OF MANILA RD, Adams, CO

Built 1993 Load: 31.2 t ADT: 1,315

WINVIEW ROAD

Fair

Over: BADGER CREEK

0.2 MI S OF 96TH AVENUE, Adams, CO

Built 1993 Load: 31.2 t ADT: 38

US 287 ML

Fair

Over: HOOK AND MOOR GLADE

1.3 MI N OF JCT SH 14, Larimer, CO

Built 1966 Load: 31.2 t ADT: 6,500

US 287 ML

Fair

Over: DRAW

2.5 MI N OF JCT SH 14, Larimer, CO

Built 1967 Load: 31.2 t ADT: 6,500

US287 ML

Fair

Over: LARIMER COUNTY CANAL

3.6 MI S OF TEDS PLACE, Larimer, CO

Built 1987 Load: 31.2 t ADT: 9,900

96TH STREET

Fair

Over: US 36 ML

IN BROOMFIELD, Broomfield, CO

Built 1995 Load: 31.2 t ADT: 21,924

Fish Hatchery Road

Fair

Over: Fall River

0.9 Mi S of US Hwy 34, Larimer, CO

Built 1985 Load: 31.2 t ADT: 130

SH 83 ML

Fair

Over: CHERRY CRK DAM SPILLWAY

IN AURORA, Arapahoe, CO

Built 1976 Load: 31.2 t ADT: 76,000

I 70 ML

Fair

Over: DRAW

IN DEERTRAIL, Arapahoe, CO

Built 1965 Load: 31.2 t ADT: 11,000

I 70 ACCESS RD

Fair

Over: KYLE RR AR

0.1 MI E OF ARRIBA, Lincoln, CO

Built 1974 Load: 31.2 t ADT: 9,600

I 70 ML

Fair

Over: DRAW

9.9 MI E. OF JCT S.H. 57, Kit Carson, CO

Built 1966 Load: 31.2 t ADT: 9,200

I 70 ML WBND

Fair

Over: COUNTY ROAD 57

3.4 MI. W. OF COLO.-KANSA, Kit Carson, CO

Built 1969 Load: 31.2 t ADT: 4,950

I 70 ML WBND

Fair

Over: REED DRAIN

0.6 MI E OF JCT SH 139, Mesa, CO

Built 1970 Load: 31.2 t ADT: 5,500

SH 82 ML

Fair

Over: LOST MAN CREEK

INDPND PASS 6 W OF SUMMI, Pitkin, CO

Built 1935 Load: 31.2 t ADT: 1,300

US 24 ML

Fair

Over: DRAW

0.3 MI E OF RAMAH, El Paso, CO

Built 1990 Load: 31.2 t ADT: 3,900

COUNTY ROAD 33

Fair

Over: LAKE FORK GUNNISON RIVER

3.3 MI S OF LAKE CITY, Hinsdale, CO

Built 1990 Load: 31.2 t ADT: 337

COUNTY ROAD 23

Fair

Over: HELL CREEK

600 FT N OF ROAD JJ, Kit Carson, CO

Built 1991 Load: 31.2 t ADT: 54

County Road 13

Fair

Over: Fort Morgan Canal

50 Ft S of St Hwy 144, Morgan, CO

Built 2004 Load: 31.2 t ADT: 694

County Road 4

Fair

Over: Shell Creek

49.0 Mi West of St Hwy 13, Moffat, CO

Built 1964 Load: 31.2 t ADT: 66

US 138 ML

Fair

Over: POWELL DITCH

7.7 MI NE OF JCT SH 113, Logan, CO

Built 1930 Load: 31.3 t ADT: 690

COUNTY ROAD 6

Fair

Over: WOLF CREEK

0.2 MI W OF CR 149, Arapahoe, CO

Built 1991 Load: 31.3 t ADT: 1,074

Hygiene Rd (Cr 10)

Fair

Over: St. Vrain Creek

1.0 Mi W of Co Rd 31, Boulder, CO

Built 1981 Load: 31.3 t ADT: 502

COUNTY ROAD 13

Fair

Over: FT. LYON CANAL

2.2 MI N OF SH 50, Bent, CO

Built 1985 Load: 31.3 t ADT: 180

ACADEMY BLVD SB

Fair

Over: BRADLEY ROAD

1 MI. E. OF I25, El Paso, CO

Built 1974 Load: 31.3 t ADT: 27,373

SH 82 ML

Fair

Over: SOPRIS CREEK

2 MI. N. OF BASALT, Eagle, CO

Built 1987 Load: 31.3 t ADT: 21,000

SH 340 ML WBND

Fair

Over: COLORADO RIVER

SW GRAND JUNCTION, Mesa, CO

Built 1974 Load: 31.3 t ADT: 9,500

SH 59 ML

Fair

Over: SPRING CREEK

7.5 MI S OF JCT I 70, Kit Carson, CO

Built 1960 Load: 31.3 t ADT: 400

COUNTY ROAD 598

Fair

Over: PICTOU ARROYO

.5 MI SOUTH OF SH 69, Huerfano, CO

Built 1989 Load: 31.3 t ADT: 116

US 24 ML

Fair

Over: AGATE CREEK

8.9 MI NE OF CHAFFEE-PARK, Park, CO

Built 1937 Load: 31.3 t ADT: 2,200

RAMP TO US 24 EBND

Fair

Over: FOUNTAIN CREEK R

0.8 MI N. OF CIRCLE DR., El Paso, CO

Built 1990 Load: 31.3 t ADT: 6,600

County Road 19

Fair

Over: Cache La Poudre Overflow

1.2 Mi. N. of Co. Rd. 48, Larimer, CO

Built 2003 Load: 31.3 t ADT: 5,617

County Road 70

Fair

Over: North Poudre Canal

0.2 Mi E of Co Rd 9, Larimer, CO

Built 1970 Load: 31.3 t ADT: 6,368

IRR# US 160 ML

Fair

Over: AZTEC CREEK

7.5 MI NE OF NEW MEXICO S, Montezuma, CO

Built 1961 Load: 31.3 t ADT: 2,200

HARVEST ROAD

Fair

Over: HUDSON CANAL

0.2 MILE S OF 152ND AVE, Adams, CO

Built 1993 Load: 31.4 t ADT: 325

PEORIA STREET

Fair

Over: OBRIAN CANAL

0.5 MI NORTH OF 104TH AVE, Adams, CO

Built 1984 Load: 31.4 t ADT: 3,552

20TH STREET

Fair

Over: I 25 ML

20TH STREET OVER I25, Denver, CO

Built 1994 Load: 31.4 t ADT: 15,604

SH 67 ML

Fair

Over: WEST PLUM CREEK

NEAR SEDALIA, Douglas, CO

Built 1966 Load: 31.4 t ADT: 3,700

US 50 ML

Fair

Over: TOMICHI CREEK

12 MI E OF DOYLEVILLE, Saguache, CO

Built 1987 Load: 31.4 t ADT: 2,300

US 160 ML

Fair

Over: SAN JUAN RIVER

4.7 MI E OF JCT US 84, Archuleta, CO

Built 1996 Load: 31.4 t ADT: 4,100

CR 13/MAROON CK RD

Fair

Over: MAROON CREEK

3.0 MI SW ASPEN/MP1.8, Pitkin, CO

Built 1988 Load: 31.4 t ADT: 751

County Road 37

Fair

Over: Collins Lateral Canal

0.8 Mi N of Co Rd 86, Weld, CO

Built 1998 Load: 31.4 t ADT: 26

EXPOSITION AVE

Fair

Over: UPPER WESTERLY CREEK

.2 MI EAST OF HAVANA ST, Arapahoe, CO

Built 1972 Load: 31.5 t ADT: 2,952

US287 ML

Fair

Over: LARIMER COUNTY CANAL

1.6 MI S OF TEDS PLACE, Larimer, CO

Built 1987 Load: 31.5 t ADT: 8,900

COUNTY ROAD 3.5

Fair

Over: FT. LYON CANAL

.7 Mi N of SH 194, Bent, CO

Built 1991 Load: 31.5 t ADT: 49

I 76 ML EBND

Fair

Over: BNSF RR BEAVER CREEK

1.5 MI NE OF JCT SH 71, Morgan, CO

Built 1960 Load: 31.5 t ADT: 6,000

MEMPHIS STREET

Fair

Over: IRONDALE GULCH

JUST N OF 53RD AVE, Denver, CO

Built 2003 Load: 31.5 t ADT: 2,821

COUNTY ROAD 12

Fair

Over: I 76 ML

6.9 MI EAST OF JCT SH 34, Morgan, CO

Built 1978 Load: 31.5 t ADT: 1,104

SH 135 ML

Fair

Over: EAST RIVER

8.7 MI S OF CRESTED BUTTE, Gunnison, CO

Built 1975 Load: 31.5 t ADT: 3,600

Showing 2,301-2,350 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.