US Bridges

SH 392 Ml over I 25 Ml

Good

Larimer County, Colorado · I-25/WINDSOR Interchange · Structure no. C-17-FK

Built
2012
13 years old
Condition
Good
inspected May 2023
Type
Box Beam or Girders - Single or Spread
Prestressed Concrete Continuous
Length
272 ft
2 main spans
Daily traffic
15,000
2020 count
Owner
State
State Highway Agency

About this bridge

SH 392 Ml over I 25 Ml is a prestressed concrete continuous box beam or girders - single or spread carrying SH 392 Ml over I 25 Ml in Larimer County, Colorado. It was built in 2012, so it is 13 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 15,000 vehicles a day, roughly 3% of them trucks, projected to reach 19,650 by 2040. The structure is 272 ft (82.9 m) long and 120 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesSH 392 Ml
CrossesI 25 Ml
LocationI-25/WINDSOR Interchange
RouteState Highway 392A
Coordinates40.47929, -104.99221
Functional classUrban Minor Arterial

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionMay 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 rating92.8 US tons
Inventory rating35.7 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, precast panels
Main spans2
Design loadHL 93
Structure length272 ft (82.9 m)
Longest span143 ft (43.7 m)
Deck width120 ft (36.6 m)
Roadway width104 ft (31.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic15,000 (2020)
Projected traffic19,650 by 2040
Trucks3%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesOverpass structure at an interchange
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 SH 392 Ml over I 25 Ml built?

It was built in 2012, making it 13 years old in 2025.

What condition is SH 392 Ml over I 25 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 May 2023.

How much traffic does SH 392 Ml over I 25 Ml carry?

About 15,000 vehicles per day (2020 count), of which roughly 3% are trucks.

How long is SH 392 Ml over I 25 Ml?

The structure is 272 ft (82.9 m) long with a longest span of 143 ft (43.7 m) and a deck 120 ft wide.

Who owns SH 392 Ml over I 25 Ml?

It is owned by the State Highway Agency.