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 24 ML

Good

Over: BLACK SQUIRREL CREEK

7.1 MI E OF FALCON, El Paso, CO

Built 2012 Load: 38.9 t ADT: 7,400

SH 92 ML

Good

Over: GUNNISON RIVER

6.4 MI NE OF DELTA, Delta, CO

Built 2022 Load: 38.9 t ADT: 5,000

SH 16A ML

Good

Over: I 25 ML

SECURITY JCT I-25 A, El Paso, CO

Built 2009 Load: 38.9 t ADT: 31,000

Anderson Hill St

Good

Over: James Creek

200 Ft S of Main St, Boulder, CO

Built 2016 Load: 38.9 t ADT: 117

SH 90 ML

Good

Over: DOLORES RIVER

0.4 MI E OF BEDROCK, Montrose, CO

Built 2017 Load: 38.9 t ADT: 340

US 50 ML

Good

Over: LUBERS DRAW

18 ME E OF LAS ANIMAS, Bent, CO

Built 2004 Load: 38.9 t ADT: 2,300

Martin Street

Good

Over: Left Hand Creek

0.2 MI S Ken Pratt Blvd, Boulder, CO

Built 2016 Load: 38.9 t ADT: 2,572

County Rd 25E

Good

Over: Redstone Creek

0.4 MI N of Swanson R. Rd, Larimer, CO

Built 2017 Load: 38.9 t ADT: 138

County Rd 25E

Good

Over: Redstone Creek

0.5 MI S of Lazuli Rd, Larimer, CO

Built 2017 Load: 38.9 t ADT: 99

County Rd 25E

Good

Over: Redstone Creek

0.2 MI N of Lazuli Rd, Larimer, CO

Built 2017 Load: 38.9 t ADT: 99

County Rd 25E

Good

Over: Redstone Creek

Lazuli Rd, Larimer, CO

Built 2017 Load: 38.9 t ADT: 68

County Rd 25E

Good

Over: Redstone Creek

0.2 MI N of Lazuli Rd, Larimer, CO

Built 2017 Load: 38.9 t ADT: 44

County Rd 25E

Good

Over: Redstone Creek

0.9 MI N of Lazuli Rd, Larimer, CO

Built 2017 Load: 38.9 t ADT: 18

County Rd 25E

Good

Over: Redstone Creek

1.5 MI N of Lazuli Rd, Larimer, CO

Built 2017 Load: 38.9 t ADT: 14

County Rd 43

Good

Over: N. Fork Big Thompson

2.0 MI E of Horseshoe Rd, Larimer, CO

Built 2016 Load: 38.9 t ADT: 585

Waltonia Road

Good

Over: Big Thompson River

20 ft S of US 34, Larimer, CO

Built 2018 Load: 38.9 t ADT: 107

I 25 ML SBND

Good

Over: SCROGGS ARROYO

2.5 MI N OF COLORAD CITY, Pueblo, CO

Built 2003 Load: 38.9 t ADT: 7,500

SH 101 ML

Good

Over: DRAW

1.4 MI NO OF TOONERVILLE, Bent, CO

Built 2020 Load: 38.9 t ADT: 70

US 350 ML

Good

Over: BLACKWELL ARROYO

10.2 MILES FROM JCT 160, Las Animas, CO

Built 2015 Load: 38.9 t ADT: 710

I 25 RAMP

Good

Over: SB ONRAMP FRM COMM. ST.

IN TRINIDAD, Las Animas, CO

Built 2011 Load: 38.9 t ADT: 16,000

COUNTY ROAD 273

Good

Over: GREENHORN CREEK

Just S of SH 165, Pueblo, CO

Built 2019 Load: 38.9 t ADT: 537

COUNTY RD 38FF

Good

Over: MIDDLE CREEK

8.9 MI N OF SH 114, Saguache, CO

Built 1992 Load: 38.9 t ADT: 53

14TH STREET

Good

Over: CEMENT CREEK

IN TOWN OF SILVERTON, San Juan, CO

Built 1993 Load: 38.9 t ADT: 647

County Road 49

Good

Over: Box Elder Creek

1.3 MI N of CR 22, Weld, CO

Built 2017 Load: 38.9 t ADT: 4,747

COUNTY ROAD 240

Good

Over: RED CREEK

JUST N OF MI MARKER 10, La Plata, CO

Built 2001 Load: 39.0 t ADT: 2,952

County Road 55

Good

Over: Iliff Platte Valley Ditc

1.4 Mi N of US Hwy 138, Logan, CO

Built 1989 Load: 39.0 t ADT: 126

COUNTY ROAD 24

Good

Over: PERSIGO WASH

0.6 MI NORTH OF RD J, Mesa, CO

Built 2010 Load: 39.0 t ADT: 1,212

County Road Q

Good

Over: Bijou Canal

At Junct. with Co Rd 10, Morgan, CO

Built 1991 Load: 39.0 t ADT: 1,617

US 160 BYPASS

Good

Over: PURGATOIRE RIVER

0.5 MI E OF I 25 IN TRINI, Las Animas, CO

Built 1988 Load: 39.0 t ADT: 3,700

COUNTY ROAD 31U

Good

Over: MIRAMONTE RES SPILLWAY

AT MIRAMONTE STATE REC AR, San Miguel, CO

Built 1965 Load: 39.0 t ADT: 94

I 70 ML WBND

Good

Over: DRAW

2.6 MI W ELBERT-LINCOLN C, Elbert, CO

Built 1972 Load: 39.1 t ADT: 5,500

County Road 71

Good

Over: Harmony No. 2 Ditch

1.1 Mi N of US Hwy 138, Logan, CO

Built 1996 Load: 39.1 t ADT: 168

County Road 87

Good

Over: South Platte River

0.6 Mi N of Co Rd 42.5, Weld, CO

Built 2009 Load: 39.1 t ADT: 247

CTY RD 155/FDR 205

Good

Over: NORTH FORK WHITE RIVER

TRAPPERS LAKE LODGE, Garfield, CO

Built 1949 Load: 39.2 t ADT: 108

13th Street

Good

Over: Yampa River

300 ft SW of US Hwy 40, Routt, CO

Built 1986 Load: 39.2 t ADT: 3,908

64TH AVENUE

Good

Over: LITTLE DRY CRK LRT/RR

.4 MI WEST OF PECOS, Adams, CO

Built 2016 Load: 39.2 t ADT: 4,530

120TH AVE EBND

Good

Over: S. PLATTE RIVER

1.5 MI W OF US85, Adams, CO

Built 2005 Load: 39.2 t ADT: 8,991

SH 14 ML

Good

Over: COLLINS LATERAL CANAL

6.3 MI E OF JCT SH 257, Weld, CO

Built 1957 Load: 39.2 t ADT: 8,900

I 25 ML SBND

Good

Over: COUNTY ROAD 16

1.1 MI SO OF JCT SH 402, Larimer, CO

Built 2023 Load: 39.2 t ADT: 86,000

ON RAMP TO EB 6TH

Good

Over: OFF-RAMP FROM EB 6TH AVE

S OF 6TH AVE NEAR QUIVAS, Denver, CO

Built 2002 Load: 39.2 t ADT: 224

SH 58 ML

Good

Over: FORD STREET WASH

IN GOLDEN, Jefferson, CO

Built 2013 Load: 39.2 t ADT: 18,000

85 NB RMP TO I25 N

Good

Over: I25ML US 85ML RMPS

IN DENVER, Denver, CO

Built 2013 Load: 39.2 t ADT: 38,000

COUNTY RD 8.8

Good

Over: SAN ISIDRO CREEK

.1 MI E OF CR 105.8, Las Animas, CO

Built 1994 Load: 39.2 t ADT: 15

NEWPORT AVENUE

Good

Over: TRIBUTARY TO DRY CREEK

0.2 MI S OF 24TH STREET, Pueblo, CO

Built 2011 Load: 39.2 t ADT: 428

County Road 61

Good

Over: Crow Creek

300 Ft N of Co Rd 68, Weld, CO

Built 2017 Load: 39.2 t ADT: 68

County Road 84

Good

Over: Collins Lateral Canal

0.5 Mi E of Co Rd 21, Weld, CO

Built 2004 Load: 39.2 t ADT: 102

County Road 96

Good

Over: Wild Horse Creek

0.95 Mi E of Co Rd 57, Weld, CO

Built 1991 Load: 39.2 t ADT: 20

Interlocken Loop S

Good

Over: W. Flatiron Crossing

400 Ft N. of Interlocken, Broomfield, CO

Built 2000 Load: 39.3 t ADT: 6,609

LOCAL DRAINAGE

Good

Over: FOREIGN TRADE ZONE BLVD

0.4 MI N OF BRADLEY RD, El Paso, CO

Built 1901 Load: 39.3 t ADT: 12,232

SH 21 B/POWERS

Good

Over: COTTONWOOD CREEK

.5 MI N. OF WOODMEN RD., El Paso, CO

Built 2001 Load: 39.3 t ADT: 50,000

Showing 7,301-7,350 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.