US Bridges

IRR - S 24 over East Fork Cherry Creek

Good

Valley County, Montana · 6M Southeast Glasgow · Structure no. 000000202405731

Built
2024
1 years old
Condition
Good
inspected November 2024
Type
Tee Beam
Prestressed Concrete
Length
141 ft
2 main spans
Daily traffic
994
2023 count
Owner
State
State Highway Agency

About this bridge

IRR - S 24 over East Fork Cherry Creek is a prestressed concrete tee beam carrying IRR - S 24 over East Fork Cherry Creek in Valley County, Montana. It was built in 2024, so it is 1 years old, younger 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 994 vehicles a day, roughly 7% of them trucks, projected to reach 1,044 by 2043. The structure is 141 ft (43 m) long and 35 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesIRR - S 24
CrossesEast Fork Cherry Creek
Location6M Southeast Glasgow
RouteState Highway 24
StateMontana
Coordinates48.25471, -106.5637
Functional classRural Minor Arterial

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating52.9 US tons
Inventory rating38.9 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans2
Design loadHL 93
Structure length141 ft (43 m)
Longest span71 ft (21.5 m)
Deck width35 ft (10.8 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic994 (2023)
Projected traffic1,044 by 2043
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 km)
TollOn a free road
National Highway SystemNo

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 IRR - S 24 over East Fork Cherry Creek built?

It was built in 2024, making it 1 years old in 2025.

What condition is IRR - S 24 over East Fork Cherry 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 November 2024.

How much traffic does IRR - S 24 over East Fork Cherry Creek carry?

About 994 vehicles per day (2023 count), of which roughly 7% are trucks.

How long is IRR - S 24 over East Fork Cherry Creek?

The structure is 141 ft (43 m) long with a longest span of 71 ft (21.5 m) and a deck 35 ft wide.

Who owns IRR - S 24 over East Fork Cherry Creek?

It is owned by the State Highway Agency.