US Bridges

County RD 71.1 over Powell Arroyo Creek

FairPosted for load

Las Animas County, Colorado · 0.2 MI N of Kentucky Ave · Structure no. LA71.1-36-14-81

Built
1935
90 years old
Condition
Fair
inspected May 2023
Type
Tee Beam
Concrete
Length
38 ft
1 main span
Daily traffic
109
2022 count
Owner
County
County Highway Agency

About this bridge

County RD 71.1 over Powell Arroyo Creek is a concrete tee beam carrying County RD 71.1 over Powell Arroyo Creek in Las Animas County, Colorado. It was built in 1935, so it is 90 years old, older than the Colorado average of 42.2 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for load restriction.

It carries about 109 vehicles a day, roughly 2% of them trucks, projected to reach 134 by 2042. The structure is 38 ft (11.5 m) long and 23 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

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CarriesCounty RD 71.1
CrossesPowell Arroyo Creek
Location0.2 MI N of Kentucky Ave
RouteCounty Highway 0
CountyLas Animas County
StateColorado
Coordinates37.19683, -104.50209
Functional classRural Major Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
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 statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating14.8 US tons
Inventory rating8.8 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length38 ft (11.5 m)
Longest span36 ft (10.9 m)
Deck width23 ft (6.9 m)
Roadway width21 ft (6.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic109 (2022)
Projected traffic134 by 2042
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was County RD 71.1 over Powell Arroyo Creek built?

It was built in 1935, making it 90 years old in 2025.

What condition is County RD 71.1 over Powell Arroyo Creek in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in May 2023.

How much traffic does County RD 71.1 over Powell Arroyo Creek carry?

About 109 vehicles per day (2022 count), of which roughly 2% are trucks.

How long is County RD 71.1 over Powell Arroyo Creek?

The structure is 38 ft (11.5 m) long with a longest span of 36 ft (10.9 m) and a deck 23 ft wide.

Who owns County RD 71.1 over Powell Arroyo Creek?

It is owned by the County Highway Agency.