US Bridges

I 90 over Hensley Cr-Hensley CR RD

Fair

Stillwater County, Montana · 5.6M E Columbus · Structure no. I00090414+02352

Built
1970
55 years old, rebuilt 2014
Condition
Fair
inspected June 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
244 ft
4 main spans
Daily traffic
6,161
2023 count
Owner
State
State Highway Agency

About this bridge

I 90 over Hensley Cr-Hensley CR RD is a prestressed concrete stringer/multi-beam or girder carrying I 90 over Hensley Cr-Hensley CR RD in Stillwater County, Montana. It was built in 1970 and reconstructed in 2014, so it is 55 years old, older 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 6,161 vehicles a day, roughly 20% of them trucks, projected to reach 6,715 by 2043. The structure is 244 ft (74.5 m) long and 41 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesI 90
CrossesHensley Cr-Hensley CR RD
Location5.6M E Columbus
RouteInterstate 90
CountyStillwater County
StateMontana
Coordinates45.60509, -109.1575
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating36 US tons
Inventory rating20 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length244 ft (74.5 m)
Longest span72 ft (21.9 m)
Deck width41 ft (12.4 m)
Roadway width38 ft (11.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,161 (2023)
Projected traffic6,715 by 2043
Trucks20%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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 I 90 over Hensley Cr-Hensley CR RD built?

It was built in 1970, making it 55 years old in 2025. It was reconstructed in 2014.

What condition is I 90 over Hensley Cr-Hensley CR RD 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 June 2023.

How much traffic does I 90 over Hensley Cr-Hensley CR RD carry?

About 6,161 vehicles per day (2023 count), of which roughly 20% are trucks.

How long is I 90 over Hensley Cr-Hensley CR RD?

The structure is 244 ft (74.5 m) long with a longest span of 72 ft (21.9 m) and a deck 41 ft wide.

Who owns I 90 over Hensley Cr-Hensley CR RD?

It is owned by the State Highway Agency.