La Plata County, CO

102 public highway bridges

La Plata County Bridge Snapshot

La Plata County, Colorado contains 102 public highway bridges in the FHWA National Bridge Inventory. Roughly 52.9% are rated “Good,” 42.2% “Fair,” 2% “Poor,” and 2% are classified as structurally deficient — the federal designation for spans whose deck, superstructure, or substructure has been rated 4 or below on the 0–9 NBI scale. Structurally deficient does not mean unsafe to cross; it means the bridge is on the priority list for repair or replacement.

Inspections in CO are conducted by certified engineers from the state Department of Transportation on a 24-month cycle, and results are reported back to the FHWA each spring. The list below shows every NBI-tracked bridge in the county, sorted by inventory load rating. Use the “Sort by” controls to surface the lowest-rated spans first, and click any row for full inspection history, traffic counts, and condition trends.

Source: FHWA National Bridge Inventory. See methodology for full definitions.

102
Total Bridges
52.9%
Good
2%
Poor
2%
Structurally Deficient

Condition Distribution

Good
52.9% (54)
Fair
42.2% (43)
Poor
2% (2)
SD
2% (2)

All Bridges (102)

US 160 ML WB RMP

Good

Over: WILSON GULCH & Ped Path

EAST of INT US 550/160, La Plata, CO

Built 2010 Load: 27.5 t ADT: 604

BAYFIELD PARKWAY

Good

Over: LOS PINOS RIVER

0.15 W Mill Street, La Plata, CO

Built 2017 Load: 28.2 t ADT: 3,060

US 550 NBND ML

Good

Over: DRAINAGE WAY

1.2 MI FROM NM BORDER, La Plata, CO

Built 2010 Load: 28.4 t ADT: 4,050

9TH STREET

Good

Over: ANIMAS RIVER

250' W OF SH 550, La Plata, CO

Built 1979 Load: 30.2 t ADT: 4,312

IRR# COUNTY RD 213

Good

Over: LA POSTA CANYON

5.9 MI NW OF SH 550, La Plata, CO

Built 1997 Load: 30.7 t ADT: 1,225

2ND AVENUE

Good

Over: JUNCTION CREEK

JUST N OF 24TH STREET, La Plata, CO

Built 1989 Load: 31.2 t ADT: 1,232

IRR# COUNTY RD 510

Good

Over: FLORIDA RIVER

.15 MI W OF CR 225A, La Plata, CO

Built 1994 Load: 32.4 t ADT: 572

US 550 ML

Good

Over: GULCH A

0.4 MI S OF US160, La Plata, CO

Built 2023 Load: 32.4 t ADT: 7,800

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 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

IRR# COUNTY RD 214

Good

Over: ANIMAS RIVER

.1 MI S OF CR 213, La Plata, CO

Built 1987 Load: 33.7 t ADT: 647

COUNTY ROAD 501

Good

Over: VALLECITO CRK DIVERSION

0.3 MI E OF N VALLECITO, La Plata, CO

Built 1995 Load: 33.8 t ADT: 749

IRR# COUNTY RD 522

Good

Over: ALLISON DITCH

1 MI W OF CR 523, La Plata, CO

Built 1993 Load: 33.8 t ADT: 127

COUNTY ROAD 250

Good

Over: ANIMAS RIVER

.2 MI E OF SH 550, La Plata, CO

Built 1989 Load: 34.1 t ADT: 457

COUNTY ROAD 203

Good

Over: HERMOSA CREEK

.1 MI W of SH 550, La Plata, CO

Built 1989 Load: 34.8 t ADT: 454

COUNTY RD 509

Good

Over: DRY CREEK

1.6 MI SW OF BAYFIELD, La Plata, CO

Built 1990 Load: 35.8 t ADT: 1,028

32ND STREET

Good

Over: ANIMAS RIVER

.2 MI E OF SH 550, La Plata, CO

Built 1974 Load: 35.8 t ADT: 10,111

IRR# COUNTY RD 119

Good

Over: LA PLATA RIVER & CANAL

1.6 MI W OF SH 140, La Plata, CO

Built 1990 Load: 37.2 t ADT: 202

COUNTY RD 309A

Good

Over: SALT CREEK

JUST S OF CR 307, La Plata, CO

Built 1995 Load: 37.7 t ADT: 405

County Road D

Good

Over: Towaoc Canal

6.4 mi SW of Cortez, La Plata, CO

Built 1990 Load: 37.9 t

BAYFIELD PARKWAY

Good

Over: LOS PINOS RIVER OVERFLOW

0.5 W Mill Street, La Plata, CO

Built 2017 Load: 37.9 t ADT: 3,060

IRR# COUNTY RD 516

Good

Over: DRY CREEK

5.3 MI S OF SH 160, La Plata, CO

Built 1993 Load: 38.7 t ADT: 455

NORTH STREET

Good

Over: LOS PINOS RIVER DIVERSIO

IN BAYFIELD, La Plata, CO

Built 1997 Load: 38.7 t ADT: 164

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 213

Good

Over: ANIMAS RIVER

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

Built 2004 Load: 40.1 t ADT: 3,800

US 550 SBnd ML

Good

Over: DRAW

1.3 MI N of NM Border, La Plata, CO

Built 1999 Load: 40.2 t ADT: 4,050

COUNTY ROAD 248

Good

Over: FLORIDA RIVER

.5 MI SW OF CR 240, La Plata, CO

Built 1992 Load: 40.3 t ADT: 50

PRIVATE LAND ACESS

Good

Over: LIGHTNER CREEK AR

W. EDGE OF DURANGO, La Plata, CO

Built 1970 Load: 40.6 t ADT: 12,000

US 160 WB ML

Good

Over: WILDLIFE CROSSING/DRAIN

23.8 MI E OF JCT US 550, La Plata, CO

Built 2015 Load: 42.1 t ADT: 5,000

US 160 EB ML

Good

Over: WILDLIFE CROSSING/DRAIN

23.8 MI E OF JCT US 550, La Plata, CO

Built 2015 Load: 42.1 t ADT: 5,000

COUNTY ROAD 228

Good

Over: FLORIDA RIVER

.3 MI SW OF CR 225, La Plata, CO

Built 1990 Load: 43.3 t ADT: 921

IRR# COUNTY RD 310

Good

Over: FLORIDA RIVER

.3 MI SE OF SH 550, La Plata, CO

Built 1977 Load: 44.1 t ADT: 2,119

NORTH BRIDGE RD

Good

Over: VALLECITO CREEK

1.8 MI N VALLECITO LAKE, La Plata, CO

Built 1971 Load: 47.3 t ADT: 40

COUNTY ROAD 501

Good

Over: LOS PINOS RIVER

7.2 MI NNW OF BAYFIELD, La Plata, CO

Built 1945 Load: 49.2 t ADT: 2,112

IRR# COUNTY RD 334

Good

Over: ALLISON DITCH

.5 MI E OF CR 336, La Plata, CO

Built 1997 Load: 50.4 t ADT: 86

IRR# COUNTY RD 100

Good

Over: LA PLATA RIVER

2 MI W OF SH 140, La Plata, CO

Built 2001 Load: 55.3 t ADT: 170

FDR 597

Good

Over: FLORIDA RIVER

16.5 MI NE OF DURANGO, La Plata, CO

Built 1949 Load: 58.0 t ADT: 84

IRR# CO RD 522A

Good

Over: ALLISON DITCH

N OF JCT OF 524 & 522, La Plata, CO

Built 1999 Load: 58.8 t ADT: 36

COUNTY ROAD 240

Good

Over: FLORIDA RIVER

2 MI NE OF CR 225, La Plata, CO

Built 1976 Load: 99.9 t ADT: 3,235

US 550 ML

Good

Over: ROADWAY, GAME UNDERPASS

3 MI N. OF HERMOSA, La Plata, CO

Built 1977 Load: 99.9 t ADT: 3,200

IRR# US 550 ML

Good

Over: DRAINAGE/GAME CROSSING

0.6 MI N OF NEW MEXICO, La Plata, CO

Built 1999 Load: 99.9 t ADT: 8,100

Related

Data sourced from official U.S. government datasets. See our methodology for details. Retrieved and formatted by PlainBridges Editorial