US Bridges

I 25 Ramp over SB Onramp Frm Comm. St.

Good

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

Built
2011
14 years old
Condition
Good
inspected October 2024
Type
Box Beam or Girders - Single or Spread
Prestressed Concrete Continuous
Length
490 ft
4 main spans
Daily traffic
16,000
2020 count
Owner
State
State Highway Agency

About this bridge

I 25 Ramp over SB Onramp Frm Comm. St. is a prestressed concrete continuous box beam or girders - single or spread carrying I 25 Ramp over SB Onramp Frm Comm. St. in Las Animas County, Colorado. It was built in 2011, so it is 14 years old, younger than the Colorado average of 42.2 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 16,000 vehicles a day, roughly 13% of them trucks, projected to reach 20,000 by 2040. The structure is 490 ft (149.2 m) long and 30 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesI 25 Ramp
CrossesSB Onramp Frm Comm. St.
LocationIn Trinidad
RouteInterstate 25A
CountyLas Animas County
StateColorado
Coordinates37.17197, -104.50968
Functional classUrban Principal Arterial - Interstate

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation8: Equal to present desirable criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating57.1 US tons
Inventory rating42.9 US tons

Structure

Structure typeBox Beam or Girders - Single or Spread
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHL 93
Structure length490 ft (149.2 m)
Longest span122 ft (37.2 m)
Deck width30 ft (9.1 m)
Roadway width27 ft (8.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic16,000 (2020)
Projected traffic20,000 by 2040
Trucks13%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was I 25 Ramp over SB Onramp Frm Comm. St. built?

It was built in 2011, making it 14 years old in 2025.

What condition is I 25 Ramp over SB Onramp Frm Comm. St. in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in October 2024.

How much traffic does I 25 Ramp over SB Onramp Frm Comm. St. carry?

About 16,000 vehicles per day (2020 count), of which roughly 13% are trucks.

How long is I 25 Ramp over SB Onramp Frm Comm. St.?

The structure is 490 ft (149.2 m) long with a longest span of 122 ft (37.2 m) and a deck 30 ft wide.

Who owns I 25 Ramp over SB Onramp Frm Comm. St.?

It is owned by the State Highway Agency.