US Bridges

I 90 EB over Int Drexel

Fair

Mineral County, Montana · 6.2M E De Borgia · Structure no. I00090025+03932

Built
1980
45 years old
Condition
Fair
inspected October 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
122 ft
3 main spans
Daily traffic
4,056
2023 count
Owner
State
State Highway Agency

About this bridge

I 90 EB over Int Drexel is a prestressed concrete stringer/multi-beam or girder carrying I 90 EB over Int Drexel in Mineral County, Montana. It was built in 1980, so it is 45 years old, younger than the Montana average of 47 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 4,056 vehicles a day, roughly 24% of them trucks, projected to reach 4,258 by 2043. The structure is 122 ft (37.3 m) long and 44 ft wide.

CarriesI 90 EB
CrossesInt Drexel
Location6.2M E De Borgia
RouteInterstate 90
StateMontana
Coordinates47.32227, -115.24781
Functional classRural Principal Arterial - Interstate

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating49.1 US tons
Inventory rating35.1 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length122 ft (37.3 m)
Longest span46 ft (14.1 m)
Deck width44 ft (13.3 m)
Roadway width41 ft (12.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,056 (2023)
Projected traffic4,258 by 2043
Trucks24%
Lanes on structure2
Traffic directionOne-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed—
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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was I 90 EB over Int Drexel built?

It was built in 1980, making it 45 years old in 2025.

What condition is I 90 EB over Int Drexel 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 October 2023.

How much traffic does I 90 EB over Int Drexel carry?

About 4,056 vehicles per day (2023 count), of which roughly 24% are trucks.

How long is I 90 EB over Int Drexel?

The structure is 122 ft (37.3 m) long with a longest span of 46 ft (14.1 m) and a deck 44 ft wide.

Who owns I 90 EB over Int Drexel?

It is owned by the State Highway Agency.