US Bridges

Fdr 160 over S.Willow Cr.

FairPosted for load

Madison County, Montana · S. Willow Cr. · Structure no. 010207000001025

Built
1995
30 years old
Condition
Fair
inspected October 2024
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
31 ft
1 main span
Daily traffic
2
Owner
Federal
U.S. Forest Service

About this bridge

Fdr 160 over S.Willow Cr. is a wood or timber stringer/multi-beam or girder carrying Fdr 160 over S.Willow Cr. in Madison County, Montana. It was built in 1995, so it is 30 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. Its operating status is: posted for load restriction.

It carries about 2 vehicles a day, projected to reach 3 by 2045. The structure is 31 ft (9.4 m) long and 10 ft wide.

Location

Open in Google Maps
CarriesFdr 160
CrossesS.Willow Cr.
LocationS. Willow Cr.
RouteCounty Highway 160
CountyMadison County
StateMontana
Coordinates45.56859, -111.92098
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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionOctober 2024
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation*: *
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating—
Inventory rating—

Structure

Structure typeStringer/Multi-beam or Girder
MaterialWood or Timber
DeckWood or timber
Main spans1
Design loadUnknown
Structure length31 ft (9.4 m)
Longest span30 ft (9 m)
Deck width10 ft (3 m)
Roadway width9 ft (2.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2 (—)
Projected traffic3 by 2045
Trucks—
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
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 Fdr 160 over S.Willow Cr. built?

It was built in 1995, making it 30 years old in 2025.

What condition is Fdr 160 over S.Willow Cr. 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 October 2024.

How much traffic does Fdr 160 over S.Willow Cr. carry?

About 2 vehicles per day (latest count).

How long is Fdr 160 over S.Willow Cr.?

The structure is 31 ft (9.4 m) long with a longest span of 30 ft (9 m) and a deck 10 ft wide.

Who owns Fdr 160 over S.Willow Cr.?

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