US Bridges

County RD 87.0 over Model Ditch

FairPosted for load

Las Animas County, Colorado · Just N of CR 42.5 · Structure no. LA870-44-22-72A

Built
1950
75 years old, rebuilt 1993
Condition
Fair
inspected June 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
30 ft
1 main span
Daily traffic
39
2022 count
Owner
County
County Highway Agency

About this bridge

County RD 87.0 over Model Ditch is a steel stringer/multi-beam or girder carrying County RD 87.0 over Model Ditch in Las Animas County, Colorado. It was built in 1950 and reconstructed in 1993, so it is 75 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 39 vehicles a day, projected to reach 48 by 2042. The structure is 30 ft (9.1 m) long and 11 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

Location

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CarriesCounty RD 87.0
CrossesModel Ditch
LocationJust N of CR 42.5
RouteCounty Highway 0
CountyLas Animas County
StateColorado
Coordinates37.30919, -104.35564
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
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 protection7 GoodSome minor problems.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating18.4 US tons
Inventory rating11 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckOpen grating
Main spans1
Design loadUnknown
Structure length30 ft (9.1 m)
Longest span26 ft (8 m)
Deck width11 ft (3.3 m)
Roadway width11 ft (3.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic39 (2022)
Projected traffic48 by 2042
Trucks0%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$728,000
NavigationNo navigation control on waterway

Frequently asked questions

When was County RD 87.0 over Model Ditch built?

It was built in 1950, making it 75 years old in 2025. It was reconstructed in 1993.

What condition is County RD 87.0 over Model Ditch 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 June 2023.

How much traffic does County RD 87.0 over Model Ditch carry?

About 39 vehicles per day (2022 count).

How long is County RD 87.0 over Model Ditch?

The structure is 30 ft (9.1 m) long with a longest span of 26 ft (8 m) and a deck 11 ft wide.

Who owns County RD 87.0 over Model Ditch?

It is owned by the County Highway Agency.