US Bridges

I-90 Service Road over Andys Draw

Fair

Crook County, Wyoming · Sundance - S Dakota Line · Structure no. BJR

Built
1956
69 years old
Condition
Fair
inspected August 2024
Type
Slab
Concrete Continuous
Length
81 ft
3 main spans
Daily traffic
290
2024 count
Owner
State
State Highway Agency

About this bridge

I-90 Service Road over Andys Draw is a concrete continuous slab carrying I-90 Service Road over Andys Draw in Crook County, Wyoming. It was built in 1956, so it is 69 years old, older than the Wyoming average of 48.4 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 290 vehicles a day, roughly 8% of them trucks, projected to reach 406 by 2043. The structure is 81 ft (24.7 m) long and 35 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

Open in Google Maps
CarriesI-90 Service Road
CrossesAndys Draw
LocationSundance - S Dakota Line
CountyCrook County
StateWyoming
Coordinates44.53508, -104.16771
Functional classRural Minor Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46 US tons
Inventory rating29 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length81 ft (24.7 m)
Longest span30 ft (9.1 m)
Deck width35 ft (10.7 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic290 (2024)
Projected traffic406 by 2043
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$44,000
NavigationNo navigation control on waterway

Frequently asked questions

When was I-90 Service Road over Andys Draw built?

It was built in 1956, making it 69 years old in 2025.

What condition is I-90 Service Road over Andys Draw in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in August 2024.

How much traffic does I-90 Service Road over Andys Draw carry?

About 290 vehicles per day (2024 count), of which roughly 8% are trucks.

How long is I-90 Service Road over Andys Draw?

The structure is 81 ft (24.7 m) long with a longest span of 30 ft (9.1 m) and a deck 35 ft wide.

Who owns I-90 Service Road over Andys Draw?

It is owned by the State Highway Agency.