US Bridges

I 25 Ml Nbnd over Windsor Res Canal Ditch

Good

Larimer County, Colorado · 1.6 MI N of JCT SH 14 · Structure no. B-16-EA

Built
1950
75 years old, rebuilt 1989
Condition
Good
inspected March 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
49 ft
1 main span
Daily traffic
19,000
2020 count
Owner
State
State Highway Agency

About this bridge

I 25 Ml Nbnd over Windsor Res Canal Ditch is a steel stringer/multi-beam or girder carrying I 25 Ml Nbnd over Windsor Res Canal Ditch in Larimer County, Colorado. It was built in 1950 and reconstructed in 1989, so it is 75 years old, older 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 19,000 vehicles a day, roughly 12% of them trucks, projected to reach 28,880 by 2040. The structure is 49 ft (14.8 m) long and 40 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesI 25 Ml Nbnd
CrossesWindsor Res Canal Ditch
Location1.6 MI N of JCT SH 14
RouteInterstate 25A
Coordinates40.60423, -105.00115
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.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating75.5 US tons
Inventory rating45.3 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length49 ft (14.8 m)
Longest span45 ft (13.7 m)
Deck width40 ft (12.3 m)
Roadway width38 ft (11.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic19,000 (2020)
Projected traffic28,880 by 2040
Trucks12%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
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 Nbnd over Windsor Res Canal Ditch built?

It was built in 1950, making it 75 years old in 2025. It was reconstructed in 1989.

What condition is I 25 Ml Nbnd over Windsor Res Canal Ditch 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 2023.

How much traffic does I 25 Ml Nbnd over Windsor Res Canal Ditch carry?

About 19,000 vehicles per day (2020 count), of which roughly 12% are trucks.

How long is I 25 Ml Nbnd over Windsor Res Canal Ditch?

The structure is 49 ft (14.8 m) long with a longest span of 45 ft (13.7 m) and a deck 40 ft wide.

Who owns I 25 Ml Nbnd over Windsor Res Canal Ditch?

It is owned by the State Highway Agency.