US Bridges

I 90 over Canyon Creek

Good

Yellowstone County, Montana · 3.1M W Billings · Structure no. I00090442+08262

Built
1959
66 years old, rebuilt 1999
Condition
Good
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 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 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 40 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesI 90
CrossesCanyon Creek
Location3.1M W Billings
RouteInterstate 90
StateMontana
Coordinates45.72686, -108.61523
Functional classUrban 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.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than 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

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length153 ft (46.6 m)
Longest span52 ft (15.8 m)
Deck width40 ft (12.1 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 proposedNone recorded
Estimated improvement cost—
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 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 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 40 ft wide.

Who owns I 90 over Canyon Creek?

It is owned by the State Highway Agency.