US Bridges

County RD 75.1 over Leitensdorfer Arroyo

Poor

Las Animas County, Colorado · .2 MI NE of CR 36 · Structure no. LA75.1-41-18-61

Built
1935
90 years old, rebuilt 2001
Condition
Poor
inspected June 2023
Type
Arch - Deck
Concrete
Length
42 ft
1 main span
Daily traffic
290
2022 count
Owner
County
County Highway Agency

About this bridge

County RD 75.1 over Leitensdorfer Arroyo is a concrete arch - deck carrying County RD 75.1 over Leitensdorfer Arroyo in Las Animas County, Colorado. It was built in 1935 and reconstructed in 2001, 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 poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 290 vehicles a day, roughly 2% of them trucks, projected to reach 356 by 2042. The structure is 42 ft (12.8 m) long and 26 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesCounty RD 75.1
CrossesLeitensdorfer Arroyo
Location.2 MI NE of CR 36
RouteCounty Highway 0
CountyLas Animas County
StateColorado
Coordinates37.25297, -104.41066
Functional classRural Major Collector

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
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 rating36 US tons
Inventory rating27 US tons

Structure

Structure typeArch - Deck
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length42 ft (12.8 m)
Longest span42 ft (12.8 m)
Deck width26 ft (8 m)
Roadway width26 ft (7.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic290 (2022)
Projected traffic356 by 2042
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedDeck replacement with only incidental widening
Estimated improvement cost$1.4 million (2019 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was County RD 75.1 over Leitensdorfer Arroyo built?

It was built in 1935, making it 90 years old in 2025. It was reconstructed in 2001.

What condition is County RD 75.1 over Leitensdorfer Arroyo in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in June 2023.

How much traffic does County RD 75.1 over Leitensdorfer Arroyo carry?

About 290 vehicles per day (2022 count), of which roughly 2% are trucks.

How long is County RD 75.1 over Leitensdorfer Arroyo?

The structure is 42 ft (12.8 m) long with a longest span of 42 ft (12.8 m) and a deck 26 ft wide.

Who owns County RD 75.1 over Leitensdorfer Arroyo?

It is owned by the County Highway Agency.