US Bridges

W Fk Thompson RD over Honeymoon CR

Good

Sanders County, Montana · Thompson-Fishtrap · Structure no. 011605000022269

Built
2007
18 years old
Condition
Good
inspected July 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
50 ft
1 main span
Daily traffic
40
Owner
Federal
U.S. Forest Service

About this bridge

W Fk Thompson RD over Honeymoon CR is a prestressed concrete stringer/multi-beam or girder carrying W Fk Thompson RD over Honeymoon CR in Sanders County, Montana. It was built in 2007, so it is 18 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 40 vehicles a day, projected to reach 60 by 2045. The structure is 50 ft (15.3 m) long and 18 ft wide. If it were closed, the detour would be 98.2 mi (158 km).

CarriesW Fk Thompson RD
CrossesHoneymoon CR
LocationThompson-Fishtrap
RouteFederal Lands Road 603
StateMontana
Coordinates47.65929, -115.18982
Functional classRural Local

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 inspectionJuly 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation8: Equal to present desirable criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating51.5 US tons
Inventory rating39.7 US tons

Structure

MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 20
Structure length50 ft (15.3 m)
Longest span48 ft (14.6 m)
Deck width18 ft (5.5 m)
Roadway width16 ft (4.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic40 (—)
Projected traffic60 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 W Fk Thompson RD over Honeymoon CR built?

It was built in 2007, making it 18 years old in 2025.

What condition is W Fk Thompson RD over Honeymoon CR 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 July 2023.

How much traffic does W Fk Thompson RD over Honeymoon CR carry?

About 40 vehicles per day (latest count).

How long is W Fk Thompson RD over Honeymoon CR?

The structure is 50 ft (15.3 m) long with a longest span of 48 ft (14.6 m) and a deck 18 ft wide.

Who owns W Fk Thompson RD over Honeymoon CR?

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