US Bridges

Central Ave over Bbwa Canal

Fair

Yellowstone County, Montana · Billings-Central Ave · Structure no. U01008001+07501

Built
1978
47 years old
Condition
Fair
inspected November 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
53 ft
1 main span
Daily traffic
17,985
2023 count
Owner
County
County Highway Agency

About this bridge

Central Ave over Bbwa Canal is a prestressed concrete stringer/multi-beam or girder carrying Central Ave over Bbwa Canal in Yellowstone County, Montana. It was built in 1978, so it is 47 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 17,985 vehicles a day, projected to reach 19,424 by 2043. The structure is 53 ft (16.2 m) long and 81 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesCentral Ave
CrossesBbwa Canal
LocationBillings-Central Ave
RouteCity Street 1008
CountyYellowstone County
StateMontana
Coordinates45.76974, -108.58651
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating55.3 US tons
Inventory rating32.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length53 ft (16.2 m)
Longest span49 ft (14.9 m)
Deck width81 ft (24.7 m)
Roadway width54 ft (16.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic17,985 (2023)
Projected traffic19,424 by 2043
Trucks0%
Lanes on structure2
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 Central Ave over Bbwa Canal built?

It was built in 1978, making it 47 years old in 2025.

What condition is Central 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 2023.

How much traffic does Central Ave over Bbwa Canal carry?

About 17,985 vehicles per day (2023 count).

How long is Central Ave over Bbwa Canal?

The structure is 53 ft (16.2 m) long with a longest span of 49 ft (14.9 m) and a deck 81 ft wide.

Who owns Central Ave over Bbwa Canal?

It is owned by the County Highway Agency.