US Bridges

I-90 Wbl on Ramp over Unnamed Draw

Good

Campbell County, Wyoming · Gillette - Moorcroft · Structure no. DBB

Built
1976
49 years old
Condition
Good
inspected May 2023
Type
Culvert
Concrete Continuous
Length
22 ft
3 main spans
Daily traffic
839
2024 count
Owner
State
State Highway Agency

About this bridge

I-90 Wbl on Ramp over Unnamed Draw is a concrete continuous culvert carrying I-90 Wbl on Ramp over Unnamed Draw in Campbell County, Wyoming. It was built in 1976, so it is 49 years old, older than the Wyoming average of 48.4 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 839 vehicles a day, roughly 6% of them trucks, projected to reach 1,175 by 2043. The structure is 22 ft (6.8 m) long. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesI-90 Wbl on Ramp
CrossesUnnamed Draw
LocationGillette - Moorcroft
RouteInterstate 90
CountyCampbell County
StateWyoming
Coordinates44.2936, -105.20963
Functional classRural 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 protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert7 GoodSome minor problems.
Last inspectionMay 2023
Inspection intervalevery 24 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 rating36 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans3
Design loadHS 20 + Mod
Structure length22 ft (6.8 m)
Longest span7 ft (2.1 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic839 (2024)
Projected traffic1,175 by 2043
Trucks6%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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 proposedOther structural work, including hydraulic replacements
Estimated improvement cost$17,000
NavigationNo navigation control on waterway

Frequently asked questions

When was I-90 Wbl on Ramp over Unnamed Draw built?

It was built in 1976, making it 49 years old in 2025.

What condition is I-90 Wbl on Ramp over Unnamed Draw 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 I-90 Wbl on Ramp over Unnamed Draw carry?

About 839 vehicles per day (2024 count), of which roughly 6% are trucks.

How long is I-90 Wbl on Ramp over Unnamed Draw?

The structure is 22 ft (6.8 m) long with a longest span of 7 ft (2.1 m).

Who owns I-90 Wbl on Ramp over Unnamed Draw?

It is owned by the State Highway Agency.