US Bridges

I 90 over Int Springdale

Good

Sweet Grass County, Montana · Springdale · Structure no. I00090354+03151

Built
1981
44 years old
Condition
Good
inspected September 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
124 ft
3 main spans
Daily traffic
6,090
2023 count
Owner
State
State Highway Agency

About this bridge

I 90 over Int Springdale is a prestressed concrete stringer/multi-beam or girder carrying I 90 over Int Springdale in Sweet Grass County, Montana. It was built in 1981, so it is 44 years old, younger than the Montana average of 47 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 6,090 vehicles a day, roughly 18% of them trucks, projected to reach 6,638 by 2043. The structure is 124 ft (37.8 m) long and 44 ft wide.

Location

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CarriesI 90
CrossesInt Springdale
LocationSpringdale
RouteInterstate 90
CountySweet Grass County
StateMontana
Coordinates45.73693, -110.21461
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating49.1 US tons
Inventory rating34 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length124 ft (37.8 m)
Longest span60 ft (18.3 m)
Deck width44 ft (13.5 m)
Roadway width41 ft (12.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,090 (2023)
Projected traffic6,638 by 2043
Trucks18%
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 over Int Springdale built?

It was built in 1981, making it 44 years old in 2025.

What condition is I 90 over Int Springdale 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 September 2023.

How much traffic does I 90 over Int Springdale carry?

About 6,090 vehicles per day (2023 count), of which roughly 18% are trucks.

How long is I 90 over Int Springdale?

The structure is 124 ft (37.8 m) long with a longest span of 60 ft (18.3 m) and a deck 44 ft wide.

Who owns I 90 over Int Springdale?

It is owned by the State Highway Agency.