US Bridges

338 Pete Creek RD over West Fork Yaak River

Poor

Lincoln County, Montana · Just Past JCT With 5902 · Structure no. 011404000000186

Built
1987
38 years old
Condition
Poor
inspected August 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
57 ft
1 main span
Daily traffic
50
1995 count
Owner
Federal
U.S. Forest Service

About this bridge

338 Pete Creek RD over West Fork Yaak River is a prestressed concrete stringer/multi-beam or girder carrying 338 Pete Creek RD over West Fork Yaak River in Lincoln County, Montana. It was built in 1987, so it is 38 years old, younger than the Montana average of 47 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 50 vehicles a day, projected to reach 75 by 2045. The structure is 57 ft (17.4 m) long and 15 ft wide. If it were closed, the detour would be 98.2 mi (158 km).

Carries338 Pete Creek RD
CrossesWest Fork Yaak River
LocationJust Past JCT With 5902
RouteFederal Lands Road 338
StateMontana
Coordinates48.95134, -115.88521
Functional classRural Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating42.9 US tons
Inventory rating33.2 US tons

Structure

MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 20
Structure length57 ft (17.4 m)
Longest span55 ft (16.8 m)
Deck width15 ft (4.6 m)
Roadway width14 ft (4.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (1995)
Projected traffic75 by 2045
Trucks—
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.2 mi (158 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerU.S. Forest Service
Maintained byU.S. Forest Service
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was 338 Pete Creek RD over West Fork Yaak River built?

It was built in 1987, making it 38 years old in 2025.

What condition is 338 Pete Creek RD over West Fork Yaak River in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in August 2023.

How much traffic does 338 Pete Creek RD over West Fork Yaak River carry?

About 50 vehicles per day (1995 count).

How long is 338 Pete Creek RD over West Fork Yaak River?

The structure is 57 ft (17.4 m) long with a longest span of 55 ft (16.8 m) and a deck 15 ft wide.

Who owns 338 Pete Creek RD over West Fork Yaak River?

It is owned by the U.S. Forest Service.