US Bridges

I 90 over Canyon Creek

Fair

Yellowstone County, Montana · 3.1M W Billings · Structure no. I00090442+08261

Built
1959
66 years old, rebuilt 1999
Condition
Fair
inspected January 2025
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
153 ft
3 main spans
Daily traffic
12,397
2023 count
Owner
State
State Highway Agency

About this bridge

I 90 over Canyon Creek is a prestressed concrete stringer/multi-beam or girder carrying I 90 over Canyon Creek in Yellowstone County, Montana. It was built in 1959 and reconstructed in 1999, so it is 66 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 12,397 vehicles a day, roughly 10% of them trucks, projected to reach 13,016 by 2043. The structure is 153 ft (46.6 m) long and 37 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesI 90
CrossesCanyon Creek
Location3.1M W Billings
RouteInterstate 90
CountyYellowstone County
StateMontana
Coordinates45.72667, -108.61506
Functional classUrban 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.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating50 US tons
Inventory rating32 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length153 ft (46.6 m)
Longest span52 ft (15.8 m)
Deck width37 ft (11.2 m)
Roadway width37 ft (11.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic12,397 (2023)
Projected traffic13,016 by 2043
Trucks10%
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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$367,000
NavigationNo navigation control on waterway

Frequently asked questions

When was I 90 over Canyon Creek built?

It was built in 1959, making it 66 years old in 2025. It was reconstructed in 1999.

What condition is I 90 over Canyon Creek 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 January 2025.

How much traffic does I 90 over Canyon Creek carry?

About 12,397 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is I 90 over Canyon Creek?

The structure is 153 ft (46.6 m) long with a longest span of 52 ft (15.8 m) and a deck 37 ft wide.

Who owns I 90 over Canyon Creek?

It is owned by the State Highway Agency.