US Bridges

Woodside Cutoff RD over Bitterroot River

Fair

Ravalli County, Montana · Woodside · Structure no. S00373000+04001

Built
1954
71 years old
Condition
Fair
inspected April 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
327 ft
4 main spans
Daily traffic
5,076
2023 count
Owner
State
State Highway Agency

About this bridge

Woodside Cutoff RD over Bitterroot River is a steel continuous stringer/multi-beam or girder carrying Woodside Cutoff RD over Bitterroot River in Ravalli County, Montana. It was built in 1954, so it is 71 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 5,076 vehicles a day, roughly 1% of them trucks, projected to reach 5,888 by 2043. The structure is 327 ft (99.8 m) long and 27 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

Location

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CarriesWoodside Cutoff RD
CrossesBitterroot River
LocationWoodside
RouteState Highway 373
CountyRavalli County
StateMontana
Coordinates46.3126, -114.14608
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating44 US tons
Inventory rating27 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 15
Structure length327 ft (99.8 m)
Longest span90 ft (27.4 m)
Deck width27 ft (8.1 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,076 (2023)
Projected traffic5,888 by 2043
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$780,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Woodside Cutoff RD over Bitterroot River built?

It was built in 1954, making it 71 years old in 2025.

What condition is Woodside Cutoff RD over Bitterroot River 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 April 2024.

How much traffic does Woodside Cutoff RD over Bitterroot River carry?

About 5,076 vehicles per day (2023 count), of which roughly 1% are trucks.

How long is Woodside Cutoff RD over Bitterroot River?

The structure is 327 ft (99.8 m) long with a longest span of 90 ft (27.4 m) and a deck 27 ft wide.

Who owns Woodside Cutoff RD over Bitterroot River?

It is owned by the State Highway Agency.