US Bridges

SB I-25 on Ramp over Lrt

Good

Denver County, Colorado · At I-25 & Evans Ave · Structure no. F-17-NQ

Built
2005
20 years old
Condition
Good
inspected March 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
56 ft
1 main span
Daily traffic
207,000
2020 count
Owner
State
State Highway Agency

About this bridge

SB I-25 on Ramp over Lrt is a prestressed concrete box beam or girders - multiple carrying SB I-25 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 207,000 vehicles a day, roughly 5% of them trucks, projected to reach 260,820 by 2040. The structure is 56 ft (17.2 m) long and 146 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesSB I-25 on Ramp
CrossesLrt
LocationAt I-25 & Evans Ave
RouteInterstate 25A
Coordinates39.67775, -104.93368
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 geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating99 US tons
Inventory rating47.7 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 25 or greater
Structure length56 ft (17.2 m)
Longest span53 ft (16.1 m)
Deck width146 ft (44.6 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic207,000 (2020)
Projected traffic260,820 by 2040
Trucks5%
Lanes on structure2
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 SB I-25 on Ramp over Lrt built?

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

What condition is SB I-25 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 SB I-25 on Ramp over Lrt carry?

About 207,000 vehicles per day (2020 count), of which roughly 5% are trucks.

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

The structure is 56 ft (17.2 m) long with a longest span of 53 ft (16.1 m) and a deck 146 ft wide.

Who owns SB I-25 on Ramp over Lrt?

It is owned by the State Highway Agency.