US Bridges

Poly DR over Bbwa Canal 040

Fair

Yellowstone County, Montana · Billings-Poly DR · Structure no. M56010000+00701

Built
1971
54 years old
Condition
Fair
inspected December 2024
Type
Tee Beam
Concrete Continuous
Length
67 ft
2 main spans
Daily traffic
6,121
2023 count
Owner
County
County Highway Agency

About this bridge

Poly DR over Bbwa Canal 040 is a concrete continuous tee beam carrying Poly DR over Bbwa Canal 040 in Yellowstone County, Montana. It was built in 1971, so it is 54 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 6,121 vehicles a day, projected to reach 6,427 by 2043. The structure is 67 ft (20.4 m) long and 60 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesPoly DR
CrossesBbwa Canal 040
LocationBillings-Poly DR
RouteCity Street 56010
CountyYellowstone County
StateMontana
Coordinates45.79489, -108.5345
Functional classUrban Minor 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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionDecember 2024
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 geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating54.7 US tons
Inventory rating32.8 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length67 ft (20.4 m)
Longest span32 ft (9.8 m)
Deck width60 ft (18.3 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,121 (2023)
Projected traffic6,427 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.9 mi (3 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 Poly DR over Bbwa Canal 040 built?

It was built in 1971, making it 54 years old in 2025.

What condition is Poly DR over Bbwa Canal 040 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 December 2024.

How much traffic does Poly DR over Bbwa Canal 040 carry?

About 6,121 vehicles per day (2023 count).

How long is Poly DR over Bbwa Canal 040?

The structure is 67 ft (20.4 m) long with a longest span of 32 ft (9.8 m) and a deck 60 ft wide.

Who owns Poly DR over Bbwa Canal 040?

It is owned by the County Highway Agency.