US Bridges

County Road 47.7 over Purgatoire River

Good

Las Animas County, Colorado · 0.1 MI S of SH 12 · Structure no. LA477-25-9-139A

Built
2009
16 years old
Condition
Good
inspected May 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete Continuous
Length
124 ft
2 main spans
Daily traffic
166
2022 count
Owner
County
County Highway Agency

About this bridge

County Road 47.7 over Purgatoire River is a prestressed concrete continuous box beam or girders - multiple carrying County Road 47.7 over Purgatoire River in Las Animas County, Colorado. It was built in 2009, so it is 16 years old, younger than the Colorado average of 42.2 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 166 vehicles a day, roughly 2% of them trucks, projected to reach 204 by 2042. The structure is 124 ft (37.7 m) long and 29 ft wide. If it were closed, the detour would be 100 mi (161 km).

Location

Open in Google Maps
CarriesCounty Road 47.7
CrossesPurgatoire River
Location0.1 MI S of SH 12
RouteCounty Highway 0
CountyLas Animas County
StateColorado
Coordinates37.12352, -104.70843
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating85.3 US tons
Inventory rating51.1 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 25 or greater
Structure length124 ft (37.7 m)
Longest span58 ft (17.6 m)
Deck width29 ft (8.9 m)
Roadway width26 ft (8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic166 (2022)
Projected traffic204 by 2042
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed100 mi (161 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was County Road 47.7 over Purgatoire River built?

It was built in 2009, making it 16 years old in 2025.

What condition is County Road 47.7 over Purgatoire River in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in May 2023.

How much traffic does County Road 47.7 over Purgatoire River carry?

About 166 vehicles per day (2022 count), of which roughly 2% are trucks.

How long is County Road 47.7 over Purgatoire River?

The structure is 124 ft (37.7 m) long with a longest span of 58 ft (17.6 m) and a deck 29 ft wide.

Who owns County Road 47.7 over Purgatoire River?

It is owned by the County Highway Agency.