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 34 BYPASS

Fair

Over: US 85 BUSS RT

N. SIDE OF EVANS, Weld, CO

Built 1968 Load: 18.5 t ADT: 33,000

US 85 ML SBND

Fair

Over: SOUTH PLATTE RIVER

IN DENVER ON SO SANTA FE, Denver, CO

Built 1972 Load: 18.5 t ADT: 44,500

SH 149 ML

Fair

Over: GUNNISON/BLUE MESA RES.

AT JUNCTION US 50, Gunnison, CO

Built 1964 Load: 18.5 t ADT: 860

SH 101 ML

Fair

Over: RULE CREEK

17.6 MI SO OF JCT US 50, Bent, CO

Built 1939 Load: 18.5 t ADT: 40

RIVER STREET

Fair

Over: SILVER CREEK

150 FT N of W SODA ST, Dolores, CO

Built 1999 Load: 18.5 t ADT: 20

COUNTY ROAD 48X

Fair

Over: SAGUACHE CREEK

.8 MI N OF CR X, Saguache, CO

Built 1965 Load: 18.5 t ADT: 214

County Road 40

Fair

Over: Gilmore Ditch

0.9 Mi E of Co Rd 45, Weld, CO

Built 1981 Load: 18.5 t ADT: 153

County Road P

Fair

Over: Sand Creek

1.3 Mi. N. of Co. Rd. 21, Washington, CO

Built 1957 Load: 18.5 t ADT: 23

County Road 5

Fair

Over: Chedsey Creek

0.2 Mi N of CR 24, Jackson, CO

Built 1962 Load: 18.6 t ADT: 20

COUNTY ROAD L

Fair

Over: WEST CARRIZO CREEK

3.6 MI E OF CR 0, Baca, CO

Built 1986 Load: 18.6 t ADT: 24

US 6 ML

Fair

Over: PREWITT RES INTAKE CANAL

13.5 MI NO OF JCT I-76, Washington, CO

Built 1941 Load: 18.6 t ADT: 1,100

H Road

Fair

Over: GOVT HIGHLINE CANAL

JUST E OF RD 27, Mesa, CO

Built 1990 Load: 18.6 t ADT: 2,259

COUNTY RD 69.1

Fair

Over: RATON CREEK

JUST N OF STARKVILLE, Las Animas, CO

Built 1930 Load: 18.6 t ADT: 75

County Road 202

Fair

Over: White River

0.21 Mi N of Co Rd 2, Rio Blanco, CO

Built 1983 Load: 18.6 t ADT: 63

County Road 26

Fair

Over: Beaver Creek

1.15 M. E. of St. Hwy. 71, Washington, CO

Built 1976 Load: 18.6 t ADT: 15

County Road 1

Fair

Over: Beaver Creek

0.65 Mi E of Co Rd NN, Yuma, CO

Built 1960 Load: 18.6 t ADT: 255

COUNTY ROAD 52

Fair

Over: BUFFALO CREEK

1.2 MI S OF SH 116, Baca, CO

Built 1964 Load: 18.7 t ADT: 72

County Road 47

Fair

Over: St. Vrain Supply Canal

2.7 Mi N of St Hwy 66, Boulder, CO

Built 1997 Load: 18.7 t ADT: 316

OTTLEY AVENUE

Fair

Over: LITTLE SALT WASH

.65 MI. E OF SH 6, Mesa, CO

Built 2003 Load: 18.7 t ADT: 6,244

US 50 ML EBND

Fair

Over: SAND CREEK

4.0 MI W OF CANON CITY, Fremont, CO

Built 1962 Load: 18.7 t ADT: 4,150

COUNTY ROAD 5W

Fair

Over: RIO GRANDE CANAL

.2 MI N OF CR 8N, Rio Grande, CO

Built 1970 Load: 18.7 t ADT: 5

FDR 155

Fair

Over: CACHE LA POUDRE RIVER

50 FT SOUTH OF CO HWY 114, Larimer, CO

Built 1937 Load: 18.8 t ADT: 100

NFSR 96

Fair

Over: SO. PLATTE RIVER

3.2 MI S OF LAKE GEORGE, Park, CO

Built 1972 Load: 18.8 t ADT: 200

NFSR 96

Fair

Over: SO. PLATTE RIVER

4.5 MI S OF LAKE GEORGE, Park, CO

Built 1971 Load: 18.8 t ADT: 200

NFSR 96

Fair

Over: SO. PLATTE RIVER

6.2 MI S OF LAKE GEORGE, Park, CO

Built 1972 Load: 18.8 t ADT: 200

NFSR 96

Fair

Over: SO. PLATTE RIVER

8.7 MI S OF LAKE GEORGE, Park, CO

Built 1972 Load: 18.8 t ADT: 200

NFSR 714.2

Fair

Over: EAGLE RIVER

CAMP HALE 13TH AND B ST, Eagle, CO

Built 2005 Load: 18.8 t ADT: 50

BALSAM ST

Fair

Over: GONZALES CREEK

600 FEET N OF MAIN ST, Las Animas, CO

Built 1991 Load: 18.8 t ADT: 123

PERINS CANYON DR

Fair

Over: LIGHTNER CREEK

1.0 MI W OF HWY 550, La Plata, CO

Built 1978 Load: 18.8 t ADT: 627

C470 EB RAMP TO 25

Fair

Over: I 25 SH 470 ML R

MID-LEVEL ABOVE JCT I-25, Douglas, CO

Built 1985 Load: 18.8 t ADT: 80,000

US 50 ML WBND

Fair

Over: EIGHT MILE CREEK

7.5 MI W OF JCT SH 120, Fremont, CO

Built 1949 Load: 18.8 t ADT: 7,000

County Road 9

Fair

Over: North Poudre Canal

1.5 Mi N of Co Rd 70, Larimer, CO

Built 1980 Load: 18.8 t ADT: 888

PRIVATE LAND ACCES

Fair

Over: LIGHTNER CREEK AR

S.W. EDGE OF DURANGO, La Plata, CO

Built 1973 Load: 18.8 t ADT: 19,000

72ND AVENUE

Fair

Over: WOLF CREEK

1.5 MI W OF STRASBURG RD, Adams, CO

Built 1992 Load: 18.9 t ADT: 31

US 24 ML

Fair

Over: SPRING CREEK

2 MI W OF STRATTON, Kit Carson, CO

Built 1931 Load: 18.9 t ADT: 350

I 25 ML SBND

Fair

Over: BURNT MILL ROAD

12 MI SO OF JCT US 50 PUE, Pueblo, CO

Built 1931 Load: 18.9 t ADT: 7,500

COUNTY ROAD 90A

Fair

Over: SAN MIGUEL RIVER

JUST NW OF CR BB36/PINON, Montrose, CO

Built 1984 Load: 19.0 t ADT: 50

ASPENGLEN CAMPGROU

Fair

Over: FALL RIVER

0.2 MILES FROM FALL RIVER, Larimer, CO

Built 1983 Load: 19.0 t ADT: 300

CARR STREET

Fair

Over: RALSTON CREEK

JUST SOUTH OF BROOKS DR, Jefferson, CO

Built 1980 Load: 19.0 t ADT: 6,962

COLORADO AVENUE

Fair

Over: MONUMENT CREEK

JUST E OF I-25, El Paso, CO

Built 1998 Load: 19.0 t ADT: 13,612

I 25 ML SBND

Fair

Over: CLOVER DITCH

6.5 MI SE OF JCT SH 29, El Paso, CO

Built 1956 Load: 19.0 t ADT: 23,500

US 385 ML

Fair

Over: ARKANSAS RIVER

2 MI NORTH OF GRANADA, Prowers, CO

Built 1949 Load: 19.0 t ADT: 510

County Road 80C

Fair

Over: N Frk Cache La Poudre Rv

0.5 Mi E of Co Rd 37, Larimer, CO

Built 1981 Load: 19.0 t ADT: 380

Big Pine Lane

Fair

Over: Big Thompson River

15 Ft S of US Hwy 34, Larimer, CO

Built 1977 Load: 19.0 t ADT: 18

MANTUKAT RD/FS211

Fair

Over: TARRYALL CREEK

8.0 MI N OF LAKE GEORGE, Park, CO

Built 1970 Load: 19.0 t ADT: 62

COUNTY ROAD 7N

Fair

Over: FARMERS UNION CANAL

5.5 MI E OF DEL NORTE, Rio Grande, CO

Built 1956 Load: 19.0 t ADT: 442

COUNTY ROAD 6S

Fair

Over: MONTE VISTA CANAL

0.7 MI WEST OF SH 15, Rio Grande, CO

Built 1960 Load: 19.1 t ADT: 1

County Road 83

Fair

Over: Fraser River

Road to Meadow Creek Resv, Grand, CO

Built 1985 Load: 19.1 t ADT: 1,702

I 25 ML NBND

Fair

Over: N.POUDRE DITCH SAND CRK

11.6 MI NORTH OF JCT SH 1, Larimer, CO

Built 1950 Load: 19.1 t ADT: 12,500

COUNTY ROAD 39

Fair

Over: SAND ARROYO

0.5 MI N OF CR X, Baca, CO

Built 1957 Load: 19.1 t ADT: 6

Showing 451-500 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.