US Bridges

I 25 Ml Sbnd over SH12 RR City ST Ditch

Fair

Las Animas County, Colorado · In Trinidad · Structure no. P-18-CE

Built
2010
15 years old
Condition
Fair
inspected December 2024
Type
Box Beam or Girders - Single or Spread
Prestressed Concrete Continuous
Length
2,058 ft
16 main spans
Daily traffic
8,000
2020 count
Owner
State
State Highway Agency

About this bridge

I 25 Ml Sbnd over SH12 RR City ST Ditch is a prestressed concrete continuous box beam or girders - single or spread carrying I 25 Ml Sbnd over SH12 RR City ST Ditch in Las Animas County, Colorado. It was built in 2010, so it is 15 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 6 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 8,000 vehicles a day, roughly 13% of them trucks, projected to reach 10,000 by 2040. The structure is 2,058 ft (627.2 m) long and 43 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesI 25 Ml Sbnd
CrossesSH12 RR City ST Ditch
LocationIn Trinidad
RouteInterstate 25A
Coordinates37.16934, -104.51128
Functional classUrban Principal Arterial - Interstate

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.
Substructure7 GoodSome minor problems.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating68 US tons
Inventory rating36.4 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, precast panels
Main spans16
Design loadHL 93
Structure length2,058 ft (627.2 m)
Longest span228 ft (69.5 m)
Deck width43 ft (13.1 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,000 (2020)
Projected traffic10,000 by 2040
Trucks13%
Lanes on structure2
Traffic directionOne-way traffic
CarriesOverpass structure at an interchange
CrossesHighway, waterway and railroad
Detour if closed0.6 mi (1 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$4.9 million
NavigationNo navigation control on waterway

Frequently asked questions

When was I 25 Ml Sbnd over SH12 RR City ST Ditch built?

It was built in 2010, making it 15 years old in 2025.

What condition is I 25 Ml Sbnd over SH12 RR City ST 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 December 2024.

How much traffic does I 25 Ml Sbnd over SH12 RR City ST Ditch carry?

About 8,000 vehicles per day (2020 count), of which roughly 13% are trucks.

How long is I 25 Ml Sbnd over SH12 RR City ST Ditch?

The structure is 2,058 ft (627.2 m) long with a longest span of 228 ft (69.5 m) and a deck 43 ft wide.

Who owns I 25 Ml Sbnd over SH12 RR City ST Ditch?

It is owned by the State Highway Agency.