US Bridges

I 25 Ml over 48th Ave RR Spur

Fair

Denver County, Colorado · In Denver · Structure no. E-16-NW

Built
1992
33 years old
Condition
Fair
inspected August 2024
Type
Box Beam or Girders - Single or Spread
Prestressed Concrete Continuous
Length
182 ft
2 main spans
Daily traffic
200,000
2020 count
Owner
State
State Highway Agency

About this bridge

I 25 Ml over 48th Ave RR Spur is a prestressed concrete continuous box beam or girders - single or spread carrying I 25 Ml over 48th Ave RR Spur in Denver County, Colorado. It was built in 1992, so it is 33 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 200,000 vehicles a day, roughly 10% of them trucks, projected to reach 232,000 by 2040. The structure is 182 ft (55.6 m) long and 222 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesI 25 Ml
Crosses48th Ave RR Spur
LocationIn Denver
RouteInterstate 25A
Coordinates39.7837, -104.98891
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating79.6 US tons
Inventory rating46.6 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length182 ft (55.6 m)
Longest span89 ft (27.2 m)
Deck width222 ft (67.6 m)
Roadway width214 ft (65.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic200,000 (2020)
Projected traffic232,000 by 2040
Trucks10%
Lanes on structure12
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was I 25 Ml over 48th Ave RR Spur built?

It was built in 1992, making it 33 years old in 2025.

What condition is I 25 Ml over 48th Ave RR Spur 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 August 2024.

How much traffic does I 25 Ml over 48th Ave RR Spur carry?

About 200,000 vehicles per day (2020 count), of which roughly 10% are trucks.

How long is I 25 Ml over 48th Ave RR Spur?

The structure is 182 ft (55.6 m) long with a longest span of 89 ft (27.2 m) and a deck 222 ft wide.

Who owns I 25 Ml over 48th Ave RR Spur?

It is owned by the State Highway Agency.