US Bridges

I-25 SB on Ramp over Lrt

Good

Denver County, Colorado · SB On-Ramp at Emerson ST · Structure no. F-17-NG

Built
2005
20 years old
Condition
Good
inspected March 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
398 ft
3 main spans
Daily traffic
98,000
2020 count
Owner
State
State Highway Agency

About this bridge

I-25 SB on Ramp over Lrt is a prestressed concrete continuous stringer/multi-beam or girder carrying I-25 SB on Ramp over Lrt in Denver County, Colorado. It was built in 2005, so it is 20 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 98,000 vehicles a day, roughly 6% of them trucks, projected to reach 120,540 by 2040. The structure is 398 ft (121.2 m) long and 28 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesI-25 SB on Ramp
CrossesLrt
LocationSB On-Ramp at Emerson ST
RouteInterstate 25A
Coordinates39.69052, -104.97526
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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating76.6 US tons
Inventory rating45.9 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3 (+1 approach)
Design loadHS 25 or greater
Structure length398 ft (121.2 m)
Longest span115 ft (35.1 m)
Deck width28 ft (8.5 m)
Roadway width25 ft (7.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic98,000 (2020)
Projected traffic120,540 by 2040
Trucks6%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
CrossesRailroad
Detour if closed1.2 mi (2 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 SB on Ramp over Lrt built?

It was built in 2005, making it 20 years old in 2025.

What condition is I-25 SB on Ramp over Lrt 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 March 2024.

How much traffic does I-25 SB on Ramp over Lrt carry?

About 98,000 vehicles per day (2020 count), of which roughly 6% are trucks.

How long is I-25 SB on Ramp over Lrt?

The structure is 398 ft (121.2 m) long with a longest span of 115 ft (35.1 m) and a deck 28 ft wide.

Who owns I-25 SB on Ramp over Lrt?

It is owned by the State Highway Agency.