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

VANCE DRIVE

Good

Over: LITTLE DRY CREEK

0.1 MI SOUTH OF 80TH AVE, Jefferson, CO

Built 1975 Load: 32.7 t ADT: 2,608

COUNTY ROAD 122

Good

Over: SOUTH TURKEY CREEK

2 MI SOUTH OF TINYTOWN, Jefferson, CO

Built 2000 Load: 32.7 t ADT: 1,690

SH 95 ML

Good

Over: PEDESTRIAN UNDERPASS

JUST S OF US36, Jefferson, CO

Built 2023 Load: 32.7 t ADT: 31,000

US 285 ML

Good

Over: WILDLIFE CROSSING

NEAR CONIFER, Jefferson, CO

Built 2009 Load: 32.7 t ADT: 19,000

50TH AVENUE

Good

Over: FARMERS HIGHLINE CANAL

.5 MI W OF MCINTYRE, Jefferson, CO

Built 1972 Load: 32.7 t ADT: 3,277

INDIANA ST

Good

Over: CROKE CANAL

.4 MI N OF 52ND AVE, Jefferson, CO

Built 2008 Load: 32.7 t ADT: 3,405

VIRGIL COURT

Good

Over: LOCAL DRAINAGE

0.2 MI S OF 60TH AVE, Jefferson, CO

Built 1994 Load: 32.7 t ADT: 207

SOUTH VALLEY ROAD

Good

Over: DEER CREEK TRIBUTARY

1.5 MI S OF KEY CARYL AVE, Jefferson, CO

Built 1975 Load: 32.7 t ADT: 1,801

YOUNGFIELD ST

Good

Over: WEAVER CREEK

0.5 MI S OF QUINCY, Jefferson, CO

Built 1980 Load: 32.7 t ADT: 1,665

WASHINGTON AVENUE

Good

Over: CLEAR CREEK

JUST S OF 10TH STREET, Jefferson, CO

Built 2003 Load: 32.7 t ADT: 6,904

ILLINOIS STREET

Good

Over: KINNEY RUN

0.4 MI S OF 24TH STREET, Jefferson, CO

Built 2004 Load: 32.7 t ADT: 137

CARR STREET

Good

Over: LOCAL DRAINAGE

0.1 MI SO OF CHATFIELD, Jefferson, CO

Built 1985 Load: 32.7 t ADT: 1,189

W. CHATFIELD AVE

Good

Over: WILLOW CREEK

0.5 mi W. of Wadsworth, Jefferson, CO

Built 2010 Load: 32.7 t ADT: 9,714

QUINCY AVENUE

Good

Over: WEAVER CREEK

0.15 MI E OF SIMMS AVE, Jefferson, CO

Built 2012 Load: 32.7 t ADT: 7,474

WEAVER DRIVE

Good

Over: LILLEY GULCH

0.3 MI E OF PIERCE CT, Jefferson, CO

Built 1972 Load: 32.7 t ADT: 1,204

PIERCE STREET

Good

Over: DUTCH CREEK

0.2 MI N OF COAL MINE RD, Jefferson, CO

Built 1971 Load: 32.7 t ADT: 13,773

MARINA RD

Good

Over: BEAR CREEK

NEAR ENT BEAR CREEK PK, Jefferson, CO

Built 1984 Load: 32.7 t ADT: 141

WESTMOOR CIRCLE

Good

Over: BIG DRY CREEK

135 FT S OF WESTMOOR DR, Jefferson, CO

Built 1998 Load: 32.7 t ADT: 4,453

EATON STREET

Good

Over: BIG BULL CREEK

S OF 110TH AVENUE, Jefferson, CO

Built 1975 Load: 32.7 t ADT: 2,331

SHERIDAN BLVD

Good

Over: MID. BR. HYLAND CREEK

JUST N OF 104TH AVE, Jefferson, CO

Built 1987 Load: 32.7 t ADT: 32,178

US 24 ML

Good

Over: DRAW

4 MI E OF SEIBERT/SH59, Kit Carson, CO

Built 1932 Load: 32.7 t ADT: 370

US 385 ML

Good

Over: DRAW

11.5 MI. SO OF JCT. S-H., Kit Carson, CO

Built 1956 Load: 32.7 t ADT: 740

COUNTY ROAD 6

Good

Over: BUFFALO CREEK

1.1 MILES S OF ROAD DD, Kit Carson, CO

Built 1987 Load: 32.7 t ADT: 38

COUNTY ROAD 141

Good

Over: WILDCAT CANYON

JUST S OF SH160, La Plata, CO

Built 2006 Load: 32.7 t ADT: 3,182

COUNTY ROAD 207

Good

Over: LIGHTNER CREEK

.2 MI N OF SH 160, La Plata, CO

Built 2013 Load: 32.7 t ADT: 1,000

COUNTY ROAD 225A

Good

Over: LONG HOLLOW CREEK

.3 MI S OF SH 160, La Plata, CO

Built 2011 Load: 32.7 t ADT: 1,689

COUNTY ROAD 501

Good

Over: BEAR CREEK

5.3 MI N OF BAYFIELD/MP 5, La Plata, CO

Built 2009 Load: 32.7 t ADT: 3,533

COUNTY ROAD 527

Good

Over: BEAVER CREEK

2.1 MI NE OF BAYFIELD, La Plata, CO

Built 2010 Load: 32.7 t ADT: 300

COUNTY RD 509

Good

Over: KING DITCH

AT BAYFIELD, La Plata, CO

Built 1994 Load: 32.7 t ADT: 50

THREE SPRINGS BLVD

Good

Over: TRAVERSE WASH

0.6 MI N of US160, La Plata, CO

Built 2004 Load: 32.7 t ADT: 12,427

CONFLUENCE AVE

Good

Over: TRAVERSE WASH

0.8 MI N of US160, La Plata, CO

Built 2004 Load: 32.7 t ADT: 2,588

US 550 ML

Good

Over: GULCH B

0.3 MI S OF US160, La Plata, CO

Built 2023 Load: 32.7 t ADT: 7,800

US 550 ML

Good

Over: WILSON GULCH/PED PATH

US160/550 Interchange, La Plata, CO

Built 2010 Load: 32.7 t ADT: 3,207

I25/CNTR LOAD BUS

Good

Over: PEDESTRIAN UNDERPASS

1.0 MI N OF JCT US 34, Larimer, CO

Built 2021 Load: 32.7 t ADT: 34,500

Bryan Avenue

Good

Over: Larimer Co Canal No. 2

0.2 Mi N of Mulberry St, Larimer, CO

Built 2015 Load: 32.7 t ADT: 2,362

Chase Drive

Good

Over: Fossil Ck Resv Inlet

.25 Mi SW Drake ,Ziegler, Larimer, CO

Built 2008 Load: 32.7 t ADT: 78

Corbett Drive

Good

Over: McClellands Channel

100 Ft N of Saddle Crk Dr, Larimer, CO

Built 2001 Load: 32.7 t ADT: 1,058

Centre Ave

Good

Over: Spring Creek

.1Mi S of Bay Dr., Larimer, CO

Built 2010 Load: 32.7 t ADT: 7,889

East Vine Drive

Good

Over: Dry Creek

0.3 Mi. E. of Lemay, Larimer, CO

Built 2006 Load: 32.7 t ADT: 6,115

Glenmoor Drive

Good

Over: Local Drainage

0.1 MI N of Plum St, Larimer, CO

Built 2013 Load: 32.7 t ADT: 469

Kinnison Drive

Good

Over: Pleasant Valley Canal

Just E of Taft Hill Road, Larimer, CO

Built 2009 Load: 32.7 t ADT: 18

Lincoln Avenue

Good

Over: Cache La Poudre River

50 E of Willow Street, Larimer, CO

Built 2017 Load: 32.7 t ADT: 7,199

Mulberry Street

Good

Over: Mercer Ditch

Just E. of Crestmore, Larimer, CO

Built 2016 Load: 32.7 t ADT: 13,247

Old Mill Road

Good

Over: McClellands Channel

200 Ft. N of Saddle Ck Dr, Larimer, CO

Built 2002 Load: 32.7 t ADT: 506

Prospect Avenue

Good

Over: Box Elder Creek

0.5 Mi West of I25, Larimer, CO

Built 2016 Load: 32.7 t ADT: 20,967

Sherwood/Mulberry

Good

Over: Arthur Ditch

Sherwood at Mulberry, Larimer, CO

Built 2005 Load: 32.7 t ADT: 531

Rigden Pkwy

Good

Over: Fossil Ck Resv Inlet

.5 MI SW of Drake/Ziegler, Larimer, CO

Built 2008 Load: 32.7 t ADT: 998

William Neal Pkwy

Good

Over: Fossil Ck Resv Inlet

E of Ziegler and W CR9, Larimer, CO

Built 2008 Load: 32.7 t

Ziegler Road

Good

Over: Fossil Ck Resv Inlet

.1 MI N William N. Pkwy, Larimer, CO

Built 2008 Load: 32.7 t ADT: 15,977

57th Street

Good

Over: Louden Ditch

W of Garfield Ave/SH287, Larimer, CO

Built 2007 Load: 32.7 t ADT: 11,414

Showing 6,701-6,750 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.