US Bridges

Ramp to I 25 Nbnd over Box Elder Crk Overflow R

Good

Larimer County, Colorado · In Fort Collins · Structure no. B-17-DN

Built
1985
40 years old
Condition
Good
inspected May 2023
Type
Culvert
Concrete
Length
21 ft
2 main spans
Daily traffic
894
2023 count
Owner
State
State Highway Agency

About this bridge

Ramp to I 25 Nbnd over Box Elder Crk Overflow R is a concrete culvert carrying Ramp to I 25 Nbnd over Box Elder Crk Overflow R in Larimer County, Colorado. It was built in 1985, so it is 40 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 894 vehicles a day, roughly 12% of them trucks, projected to reach 1,117 by 2042. The structure is 21 ft (6.4 m) long and 144 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesRamp to I 25 Nbnd
CrossesBox Elder Crk Overflow R
LocationIn Fort Collins
RouteInterstate 25A
Coordinates40.61072, -105.00021
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
Channel and channel protection8 Very GoodNo problems noted.
Culvert7 GoodSome minor problems.
Last inspectionMay 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating95.9 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 20
Structure length21 ft (6.4 m)
Longest span10 ft (2.9 m)
Deck width144 ft (43.9 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic894 (2023)
Projected traffic1,117 by 2042
Trucks12%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 Ramp to I 25 Nbnd over Box Elder Crk Overflow R built?

It was built in 1985, making it 40 years old in 2025.

What condition is Ramp to I 25 Nbnd over Box Elder Crk Overflow R 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 Ramp to I 25 Nbnd over Box Elder Crk Overflow R carry?

About 894 vehicles per day (2023 count), of which roughly 12% are trucks.

How long is Ramp to I 25 Nbnd over Box Elder Crk Overflow R?

The structure is 21 ft (6.4 m) long with a longest span of 10 ft (2.9 m) and a deck 144 ft wide.

Who owns Ramp to I 25 Nbnd over Box Elder Crk Overflow R?

It is owned by the State Highway Agency.