US Bridges

Whiskey RD over Big Muddy Creek 043

Fair

Sheridan County, Montana · 3M N Medicine Lake · Structure no. L46417002+08001

Built
1978
47 years old
Condition
Fair
inspected February 2024
Type
Tee Beam
Prestressed Concrete
Length
60 ft
1 main span
Daily traffic
71
2023 count
Owner
County
County Highway Agency

About this bridge

Whiskey RD over Big Muddy Creek 043 is a prestressed concrete tee beam carrying Whiskey RD over Big Muddy Creek 043 in Sheridan 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 5 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 71 vehicles a day, roughly 3% of them trucks, projected to reach 75 by 2043. The structure is 60 ft (18.4 m) long and 24 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

Location

Open in Google Maps
CarriesWhiskey RD
CrossesBig Muddy Creek 043
Location3M N Medicine Lake
RouteCounty Highway 46417
CountySheridan County
StateMontana
Coordinates48.54867, -104.49761
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating30 US tons
Inventory rating23.9 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length60 ft (18.4 m)
Longest span60 ft (18.3 m)
Deck width24 ft (7.3 m)
Roadway width24 ft (7.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic71 (2023)
Projected traffic75 by 2043
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$96,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Whiskey RD over Big Muddy Creek 043 built?

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

What condition is Whiskey RD over Big Muddy Creek 043 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 February 2024.

How much traffic does Whiskey RD over Big Muddy Creek 043 carry?

About 71 vehicles per day (2023 count), of which roughly 3% are trucks.

How long is Whiskey RD over Big Muddy Creek 043?

The structure is 60 ft (18.4 m) long with a longest span of 60 ft (18.3 m) and a deck 24 ft wide.

Who owns Whiskey RD over Big Muddy Creek 043?

It is owned by the County Highway Agency.