US Bridges

128th Ave over I25 Ml

Good

Adams County, Colorado · 0.5 MI W of Washington ST · Structure no. E-17-ADM

Built
2008
17 years old
Condition
Good
inspected July 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
270 ft
2 main spans
Daily traffic
20,090
2024 count
Owner
State
State Highway Agency

About this bridge

128th Ave over I25 Ml is a prestressed concrete continuous stringer/multi-beam or girder carrying 128th Ave over I25 Ml in Adams County, Colorado. It was built in 2008, so it is 17 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 20,090 vehicles a day, projected to reach 26,117 by 2044. The structure is 270 ft (82.4 m) long and 76 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Carries128th Ave
CrossesI25 Ml
Location0.5 MI W of Washington ST
RouteCity Street 0
Coordinates39.92846, -104.98834
Functional classUrban Collector

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 inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating61.8 US tons
Inventory rating37.1 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, precast panels
Main spans2
Design loadHS 25 or greater
Structure length270 ft (82.4 m)
Longest span131 ft (39.9 m)
Deck width76 ft (23.2 m)
Roadway width52 ft (15.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20,090 (2024)
Projected traffic26,117 by 2044
Trucks0%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

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 128th Ave over I25 Ml built?

It was built in 2008, making it 17 years old in 2025.

What condition is 128th Ave over I25 Ml 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 July 2024.

How much traffic does 128th Ave over I25 Ml carry?

About 20,090 vehicles per day (2024 count).

How long is 128th Ave over I25 Ml?

The structure is 270 ft (82.4 m) long with a longest span of 131 ft (39.9 m) and a deck 76 ft wide.

Who owns 128th Ave over I25 Ml?

It is owned by the State Highway Agency.