US Bridges

Whitetail RD over Whitetail Creek

Fair

Jefferson County, Montana · 2M N Whitehall · Structure no. S00399001+09001

Built
1983
42 years old, rebuilt 2000
Condition
Fair
inspected November 2023
Type
Tee Beam
Prestressed Concrete
Length
26 ft
1 main span
Daily traffic
292
2023 count
Owner
State
State Highway Agency

About this bridge

Whitetail RD over Whitetail Creek is a prestressed concrete tee beam carrying Whitetail RD over Whitetail Creek in Jefferson County, Montana. It was built in 1983 and reconstructed in 2000, so it is 42 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 292 vehicles a day, roughly 1% of them trucks, projected to reach 307 by 2043. The structure is 26 ft (7.9 m) long and 30 ft wide. If it were closed, the detour would be 60.3 mi (97 km).

Location

Open in Google Maps
CarriesWhitetail RD
CrossesWhitetail Creek
Location2M N Whitehall
RouteState Highway 399
CountyJefferson County
StateMontana
Coordinates45.90128, -112.11147
Functional classRural Major 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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating32 US tons
Inventory rating20.9 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadUnknown
Structure length26 ft (7.9 m)
Longest span24 ft (7.3 m)
Deck width30 ft (9.1 m)
Roadway width28 ft (8.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic292 (2023)
Projected traffic307 by 2043
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed60.3 mi (97 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 Whitetail RD over Whitetail Creek built?

It was built in 1983, making it 42 years old in 2025. It was reconstructed in 2000.

What condition is Whitetail RD over Whitetail Creek 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 Whitetail RD over Whitetail Creek carry?

About 292 vehicles per day (2023 count), of which roughly 1% are trucks.

How long is Whitetail RD over Whitetail Creek?

The structure is 26 ft (7.9 m) long with a longest span of 24 ft (7.3 m) and a deck 30 ft wide.

Who owns Whitetail RD over Whitetail Creek?

It is owned by the State Highway Agency.