US Bridges

SH 402 Ml over I25 Ml

Good

Larimer County, Colorado · 4.2 MI E of JCT US 287 · Structure no. C-17-HG

Built
2020
5 years old
Condition
Good
inspected June 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
225 ft
2 main spans
Daily traffic
86,000
2018 count
Owner
State
State Highway Agency

About this bridge

SH 402 Ml over I25 Ml is a prestressed concrete continuous stringer/multi-beam or girder carrying SH 402 Ml over I25 Ml in Larimer County, Colorado. It was built in 2020, so it is 5 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 86,000 vehicles a day, roughly 14% of them trucks, projected to reach 46,810 by 2038. The structure is 225 ft (68.7 m) long and 86 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesSH 402 Ml
CrossesI25 Ml
Location4.2 MI E of JCT US 287
RouteState Highway 25A
Coordinates40.37769, -104.99328
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.
Substructure7 GoodSome minor problems.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating89.3 US tons
Inventory rating46.4 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHL 93
Structure length225 ft (68.7 m)
Longest span111 ft (33.7 m)
Deck width86 ft (26.2 m)
Roadway width83 ft (25.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic86,000 (2018)
Projected traffic46,810 by 2038
Trucks14%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed3.7 mi (6 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 SH 402 Ml over I25 Ml built?

It was built in 2020, making it 5 years old in 2025.

What condition is SH 402 Ml 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 June 2023.

How much traffic does SH 402 Ml over I25 Ml carry?

About 86,000 vehicles per day (2018 count), of which roughly 14% are trucks.

How long is SH 402 Ml over I25 Ml?

The structure is 225 ft (68.7 m) long with a longest span of 111 ft (33.7 m) and a deck 86 ft wide.

Who owns SH 402 Ml over I25 Ml?

It is owned by the State Highway Agency.