US Bridges

Grand Ave over Bbwa Canal

Fair

Yellowstone County, Montana · Billings-Grand Ave · Structure no. U01004001+08401

Built
1981
44 years old
Condition
Fair
inspected November 2024
Type
Slab
Concrete Continuous
Length
51 ft
2 main spans
Daily traffic
15,881
2023 count
Owner
County
County Highway Agency

About this bridge

Grand Ave over Bbwa Canal is a concrete continuous slab carrying Grand Ave over Bbwa Canal in Yellowstone 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 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 15,881 vehicles a day, projected to reach 16,834 by 2043. The structure is 51 ft (15.5 m) long and 75 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesGrand Ave
CrossesBbwa Canal
LocationBillings-Grand Ave
RouteCity Street 1004
CountyYellowstone County
StateMontana
Coordinates45.78413, -108.57994
Functional classUrban Other Principal Arterial

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 protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating85 US tons
Inventory rating51 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length51 ft (15.5 m)
Longest span25 ft (7.6 m)
Deck width75 ft (22.9 m)
Roadway width61 ft (18.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic15,881 (2023)
Projected traffic16,834 by 2043
Trucks0%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 Grand Ave over Bbwa Canal built?

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

What condition is Grand Ave over Bbwa Canal 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 November 2024.

How much traffic does Grand Ave over Bbwa Canal carry?

About 15,881 vehicles per day (2023 count).

How long is Grand Ave over Bbwa Canal?

The structure is 51 ft (15.5 m) long with a longest span of 25 ft (7.6 m) and a deck 75 ft wide.

Who owns Grand Ave over Bbwa Canal?

It is owned by the County Highway Agency.