US Bridges

Truck Route RD over Yates Creek 003

Fair

Wibaux County, Montana · East Wibaux · Structure no. L55124000+06001

Built
1939
86 years old
Condition
Fair
inspected August 2023
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
77 ft
4 main spans
Daily traffic
53
2023 count
Owner
State
State Highway Agency

About this bridge

Truck Route RD over Yates Creek 003 is a wood or timber stringer/multi-beam or girder carrying Truck Route RD over Yates Creek 003 in Wibaux County, Montana. It was built in 1939, so it is 86 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 53 vehicles a day, roughly 3% of them trucks, projected to reach 56 by 2043. The structure is 77 ft (23.6 m) long and 30 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesTruck Route RD
CrossesYates Creek 003
LocationEast Wibaux
RouteState Highway 55124
StateMontana
Coordinates46.98588, -104.16186
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating56 US tons
Inventory rating39 US tons

Structure

MaterialWood or Timber
DeckWood or timber
Main spans4
Design loadH 15
Structure length77 ft (23.6 m)
Longest span19 ft (5.8 m)
Deck width30 ft (9.1 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic53 (2023)
Projected traffic56 by 2043
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 Truck Route RD over Yates Creek 003 built?

It was built in 1939, making it 86 years old in 2025.

What condition is Truck Route RD over Yates Creek 003 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 August 2023.

How much traffic does Truck Route RD over Yates Creek 003 carry?

About 53 vehicles per day (2023 count), of which roughly 3% are trucks.

How long is Truck Route RD over Yates Creek 003?

The structure is 77 ft (23.6 m) long with a longest span of 19 ft (5.8 m) and a deck 30 ft wide.

Who owns Truck Route RD over Yates Creek 003?

It is owned by the State Highway Agency.