State profile · Below national median SD

Colorado bridge safety

Condition ratings, load ratings, and structural-deficiency data for every public highway bridge in Colorado — drawn straight from the FHWA National Bridge Inventory.

8,965
Public bridges
32.0%
Good condition
4.3%
Poor condition
4.3%
Structurally deficient

Total Bridges

8,965

Public highway bridges in Colorado

Good Condition

32.0%

2,865 bridges rated 7-9

-18.0pp vs 50% benchmark

Poor Condition

4.3%

387 bridges rated 0-4

Structurally Deficient

4.3%

387 bridges flagged for repair priority

-2.7pp vs national avg 7.0%

Colorado vs national bridge condition

Colorado — Good condition share 32.0%
National avg

Share of bridges rated 7-9 on the FHWA 0-9 scale (deck, superstructure, substructure all good).

Colorado — Structurally deficient share 14.4%
National avg

Lower is better. Bar maxes at 30% (worst-state ceiling). National average sits at 7.0%.

Condition Distribution

Bridge inventory deck-condition mix — Colorado (FHWA NBI)

Colorado31.95761293920803%54.210819854991634%GoodFairPoorStructurally Deficient
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 on the structurally deficient leaderboard (lower share = better)

States are ranked by share of bridges flagged structurally deficient — the FHWA classification for any span where deck, superstructure, or substructure carries a condition rating of 4 or below. Lower percentages indicate stronger maintenance funding and inspection follow-through. States here sit immediately above and below Colorado on the same metric.

47

Tennessee

3.97% top marginal rate
Structure
Progressive
Burden @ $100K
$20,426

24

Maryland

4.27% top marginal rate
Structure
Progressive
Burden @ $100K
$5,527
Selected

08

Colorado

4.32% top marginal rate
Structure
Progressive
Burden @ $100K
$8,965

41

Oregon

4.46% top marginal rate
Structure
Progressive
Burden @ $100K
$8,310

39

Ohio

4.54% top marginal rate
Structure
Progressive
Burden @ $100K
$26,753

Bridges Needing Most Attention in Colorado

Six lowest-condition bridges in Colorado, ranked by composite NBI rating. Each is inspected at least every 24 months.

County Road 59

Structurally Deficient

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

Structurally Deficient

Over: NORTH CRESTONE CREEK

IN TOWN OF CRESTONE, Saguache, CO

Built 1991 Load: 2.3 t ADT: 65

CO Rd 32

Structurally Deficient

Over: Feeder Ditch

0.28 MI E of Co Rd 75, Las Animas, CO

Built 1970 Load: 2.7 t ADT: 7

POTOMAC STREET

Structurally Deficient

Over: OBRIAN CANAL

0.2 MILE NORTH OF SH 2, Adams, CO

Built 1940 Load: 3.8 t ADT: 190

88TH AVENUE

Structurally Deficient

Over: KIOWA CREEK

0.1 MI E OF WOLF CREEK RD, Adams, CO

Built 1950 Load: 4.5 t ADT: 532

IRR# CO RD 500

Poor

Over: CAT CREEK

NEAR CAMADO, Archuleta, CO

Built 1927 Load: 4.7 t ADT: 36

All Bridges in Colorado

I25 ML SBND

Good

Over: POUDRE RIVER FLOODPLAIN

0.2 MI S OF KECHTER RD, Larimer, CO

Built 2023 Load: 32.4 t ADT: 90,000

US 34 ML

Good

Over: BIG THOMPSON RIVER

2.8 MI FROM JCT CO RD 43, Larimer, CO

Built 2018 Load: 32.4 t ADT: 4,900

Taft Avenue

Good

Over: Big Barnes Ditch

200 ft N of W 10th St, Larimer, CO

Built 2019 Load: 32.4 t ADT: 19,446

S Railroad Ave

Good

Over: Flood plain

0.6 mi N of CR 18, Larimer, CO

Built 2019 Load: 32.4 t ADT: 2,443

County Rd 41G

Good

Over: N. Fork Big Thompson R.

N of CR 43, Larimer, CO

Built 2016 Load: 32.4 t ADT: 674

CR 50 (Willox Ln)

Good

Over: Larimer & Weld Canal

0.2 Mi E of Co Rd 17, Larimer, CO

Built 2016 Load: 32.4 t ADT: 6,416

Jefferson Ave.

Good

Over: Boxelder Creek

West of 3rd Avenue, Larimer, CO

Built 2005 Load: 32.4 t ADT: 2,596

US 350 ML

Good

Over: PURGATOIRE RIVER

6.6 MI NE of JCT US160, Las Animas, CO

Built 2014 Load: 32.4 t ADT: 730

Early Settlers Rd

Good

Over: Leon Creek Feeder Canal

3.7 mi SE HWY 330/64.6 Rd, Mesa, CO

Built 1999 Load: 32.4 t ADT: 830

US160 ML

Good

Over: Lake Fork

4.7 MI SW of MIN-RIO G CL, Mineral, CO

Built 2010 Load: 32.4 t ADT: 2,900

IRR BIA RTE 208

Good

Over: MANCOS RIVER

19.7 KM E OF CHIMNEY ROCK, Montezuma, CO

Built 1975 Load: 32.4 t ADT: 100

Morrow Pt. Dam Rd

Good

Over: Cimmaron Creek

Cimmmaron, Colorado, Montrose, CO

Built 1985 Load: 32.4 t ADT: 30

SH 71 ML

Good

Over: LWR PLATTE,BEAVER CANAL

3.5 MI N OF JCT I 76, Morgan, CO

Built 1981 Load: 32.4 t ADT: 1,400

SH 71 ML

Good

Over: I 76 ML

IN BRUSH, Morgan, CO

Built 2015 Load: 32.4 t ADT: 5,200

County Road 17

Good

Over: Riverside Canal

100 ft. N of Co Rd U, Morgan, CO

Built 2016 Load: 32.4 t ADT: 246

W. 11TH STREET

Good

Over: DRY CREEK

0.2 Mi E of Adee Ave, Pueblo, CO

Built 2017 Load: 32.4 t ADT: 709

US 40 ML

Good

Over: E FORK ELK RIVER

7 MI W OF STMBT. SPRINGS, Routt, CO

Built 2013 Load: 32.4 t ADT: 5,700

SH 67 ML

Good

Over: LOY GULCH

1.4 MI N OF WOODLAND PARK, Teller, CO

Built 2011 Load: 32.4 t ADT: 3,700

I 25 ML SBND

Good

Over: WELD COUNTY ROAD 46

1 MI SO OF JCT SH 60, Weld, CO

Built 2022 Load: 32.4 t ADT: 83,000

I25 ML

Good

Over: GW RR

0.6 MI SO of JCT SH 60, Weld, CO

Built 2023 Load: 32.4 t ADT: 41,000

US 34 ML

Good

Over: FLOODPLAIN

03.0 MI E OF US85, Weld, CO

Built 2015 Load: 32.4 t ADT: 18,000

County Road 38

Good

Over: Evans Ditch No. 2

0.7 Mi E of Co Rd 31, Weld, CO

Built 2015 Load: 32.4 t ADT: 107

County Road 49

Good

Over: Gilmore Ditch

0.1 Mi N of Co Rd 52, Weld, CO

Built 2017 Load: 32.4 t ADT: 15,821

County Road 49

Good

Over: Latham Ditch

100 Ft N of Co Rd 54, Weld, CO

Built 2017 Load: 32.4 t ADT: 15,819

I 76 ML EBND

Good

Over: UP RR

0.2 MI E OF JCT US 85, Adams, CO

Built 2016 Load: 32.5 t ADT: 16,500

MAIN STREET

Good

Over: RAILROAD AND LRT

JUST E OF RIO GRANDE ST, Arapahoe, CO

Built 1985 Load: 32.5 t ADT: 12,746

I 70 ML EBND

Good

Over: GRIZZLY CREEK

3.4 MI E OF GLENWD. SPGS., Garfield, CO

Built 1986 Load: 32.5 t ADT: 8,500

YORK ST

Good

Over: EAST HARVARD GULCH

YORK ST N OF VASSAR AVE, Denver, CO

Built 1967 Load: 32.6 t ADT: 735

SH 74 ML

Good

Over: TROUBLESOME CREEK

WEST EDGE OF KITTREDGE, Jefferson, CO

Built 1959 Load: 32.6 t ADT: 6,000

IRR BIA RTE 159

Good

Over: PINE RIVER CANAL

3 KM S,10 KM E OF IGNACIO, La Plata, CO

Built 1998 Load: 32.6 t ADT: 10

County Road 68

Good

Over: Harmony No. 1 Canal

At Junct. of Co Rd 95/68, Logan, CO

Built 2001 Load: 32.6 t ADT: 13

COUNTY ROAD 5800

Good

Over: IRONSTONE CANAL

.15 MI S OF SH348, Montrose, CO

Built 1992 Load: 32.6 t ADT: 62

SH 370 ML

Good

Over: EMPIRE CANAL

5.9 MI E OF JCT SH 15, Rio Grande, CO

Built 1955 Load: 32.6 t ADT: 330

SH 392 ML

Good

Over: GREELEY CANAL NO 2

9.1 MI E OF JCT SH 257, Weld, CO

Built 1969 Load: 32.6 t ADT: 6,500

County Road 29

Good

Over: Cache La Poudre River

0.5 Mi S of Co Rd 64, Weld, CO

Built 1990 Load: 32.6 t ADT: 419

County Road 55

Good

Over: Greeley Ditch

0.2 MI North of CR 66, Weld, CO

Built 1986 Load: 32.6 t ADT: 2,137

TOUR LOOP

Good

Over: First Creek

1.0 MI E OF C STREET, Adams, CO

Built 2010 Load: 32.7 t ADT: 75

FRANKLIN ST

Good

Over: LAKE ERIE TRIB

0.1 MI S OF 144TH AVE, Adams, CO

Built 2005 Load: 32.7 t ADT: 338

COLORADO BLVD.

Good

Over: BIG DRY CREEK

0.5 MI S of 168th AVENUE, Adams, CO

Built 2014 Load: 32.7 t ADT: 3,245

E. 120TH AVE.

Good

Over: LOCAL DRAINAGE

0.2 MI W OF HAYSMOUNT RD, Adams, CO

Built 2007 Load: 32.7 t ADT: 3,067

136th AVE

Good

Over: FULTON DITCH

.4 MI W OF SABLE BLVD/SH2, Adams, CO

Built 2015 Load: 32.7 t ADT: 2,602

E. 143RD AVE

Good

Over: LAKE ERIE TRIB.

0.1 MI E OF FRANKLIN ST, Adams, CO

Built 2005 Load: 32.7 t ADT: 50

168TH AVENUE

Good

Over: BRANTNER DITCH

0.2 MILE W. OF PEORIA ST., Adams, CO

Built 2012 Load: 32.7 t ADT: 4,622

SMITH ROAD

Good

Over: LOCAL DRAINAGE

0.25 MI E OF SCRANTON, Adams, CO

Built 2014 Load: 32.7 t ADT: 1,787

SMITH ROAD

Good

Over: FIRST CREEK

0.2 MI W of E-470, Adams, CO

Built 2015 Load: 32.7 t ADT: 2,886

BRIGHTON ROAD

Good

Over: SOUTHERN OUTFALL DRAINAG

.2 MI S OF BROMLEY LANE, Adams, CO

Built 2004 Load: 32.7 t ADT: 1,620

168th Avenue

Good

Over: Speer Canal

1.1 Miles West of I-76, Adams, CO

Built 2023 Load: 32.7 t ADT: 8,798

56TH AVE

Good

Over: SAND CREEK

JUST E OF DAHLIA STREET, Adams, CO

Built 1981 Load: 32.7 t ADT: 20,316

88TH AVENUE

Good

Over: SECOND CREEK

.6 MI W OF TOWER ROAD, Adams, CO

Built 2004 Load: 32.7 t

81ST AVENUE

Good

Over: TRIB TO SECOND CREEK

0.1 MI W OF TOWER RD, Adams, CO

Built 1995 Load: 32.7 t ADT: 3,842

Showing 6,501-6,550 of 8,965 bridges

Related

All states → | National rankings → | Understanding conditions → | SD bridges explained →
Data sourced from the FHWA National Bridge Inventory (NBI), latest released cycle. See our methodology for details. Retrieved and formatted by PlainBridges Editorial.

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). A "structurally deficient" rating is a repair-priority signal, not a closure or unsafe-to-cross designation. Consult a qualified civil engineer before making decisions based on this data.

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.