US Bridges

County RD 75.0 over Unnamed Natural Drainage

Fair

Las Animas County, Colorado · 0.7 MI N of CR 32.4 · Structure no. LA75-38-17-52A

Built
1984
41 years old
Condition
Fair
inspected May 2023
Type
Culvert
Steel
Length
23 ft
1 main span
Daily traffic
129
2022 count
Owner
County
County Highway Agency

About this bridge

County RD 75.0 over Unnamed Natural Drainage is a steel culvert carrying County RD 75.0 over Unnamed Natural Drainage in Las Animas County, Colorado. It was built in 1984, so it is 41 years old, younger 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.

It carries about 129 vehicles a day, roughly 2% of them trucks, projected to reach 159 by 2042. The structure is 23 ft (6.9 m) long and 36 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesCounty RD 75.0
CrossesUnnamed Natural Drainage
Location0.7 MI N of CR 32.4
RouteCounty Highway 0
CountyLas Animas County
StateColorado
Coordinates37.23466, -104.46652
Functional classRural Local

Condition and inspection

Fair

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

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert5 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 evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating84.2 US tons
Inventory rating50.4 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans1
Design loadHS 20 + Mod
Structure length23 ft (6.9 m)
Longest span23 ft (6.9 m)
Deck width36 ft (11.1 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic129 (2022)
Projected traffic159 by 2042
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 RD 75.0 over Unnamed Natural Drainage built?

It was built in 1984, making it 41 years old in 2025.

What condition is County RD 75.0 over Unnamed Natural Drainage 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 75.0 over Unnamed Natural Drainage carry?

About 129 vehicles per day (2022 count), of which roughly 2% are trucks.

How long is County RD 75.0 over Unnamed Natural Drainage?

The structure is 23 ft (6.9 m) long with a longest span of 23 ft (6.9 m) and a deck 36 ft wide.

Who owns County RD 75.0 over Unnamed Natural Drainage?

It is owned by the County Highway Agency.