US Bridges

N 24th ST over Bbwa Canal 207

Fair

Yellowstone County, Montana · Billings-N 24th ST W · Structure no. M56010000+00601

Built
1988
37 years old
Condition
Fair
inspected November 2024
Type
Tee Beam
Prestressed Concrete
Length
60 ft
1 main span
Daily traffic
5,858
2023 count
Owner
County
County Highway Agency

About this bridge

N 24th ST over Bbwa Canal 207 is a prestressed concrete tee beam carrying N 24th ST over Bbwa Canal 207 in Yellowstone County, Montana. It was built in 1988, so it is 37 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 5,858 vehicles a day, roughly 3% of them trucks, projected to reach 6,239 by 2043. The structure is 60 ft (18.3 m) long and 73 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesN 24th ST
CrossesBbwa Canal 207
LocationBillings-N 24th ST W
RouteCity Street 56010
CountyYellowstone County
StateMontana
Coordinates45.78691, -108.57638
Functional classUrban Collector

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 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry9: Superior to present desirable criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating37 US tons
Inventory rating21.1 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length60 ft (18.3 m)
Longest span60 ft (18.3 m)
Deck width73 ft (22.2 m)
Roadway width53 ft (16.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,858 (2023)
Projected traffic6,239 by 2043
Trucks3%
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 N 24th ST over Bbwa Canal 207 built?

It was built in 1988, making it 37 years old in 2025.

What condition is N 24th ST over Bbwa Canal 207 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 N 24th ST over Bbwa Canal 207 carry?

About 5,858 vehicles per day (2023 count), of which roughly 3% are trucks.

How long is N 24th ST over Bbwa Canal 207?

The structure is 60 ft (18.3 m) long with a longest span of 60 ft (18.3 m) and a deck 73 ft wide.

Who owns N 24th ST over Bbwa Canal 207?

It is owned by the County Highway Agency.