US Bridges

Savoy RD over Drainage 112

FairPosted for load

Phillips County, Montana · W Dodson · Structure no. L36001000+03001

Built
1951
74 years old
Condition
Fair
inspected March 2024
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
77 ft
3 main spans
Daily traffic
16
2023 count
Owner
County
County Highway Agency

About this bridge

Savoy RD over Drainage 112 is a wood or timber stringer/multi-beam or girder carrying Savoy RD over Drainage 112 in Phillips County, Montana. It was built in 1951, so it is 74 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 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 16 vehicles a day, roughly 3% of them trucks, projected to reach 17 by 2043. The structure is 77 ft (23.5 m) long and 30 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesSavoy RD
CrossesDrainage 112
LocationW Dodson
RouteCounty Highway 36013
CountyPhillips County
StateMontana
Coordinates48.40022, -108.25858
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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating11 US tons
Inventory rating4 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialWood or Timber
DeckWood or timber
Main spans3
Design loadHS 20
Structure length77 ft (23.5 m)
Longest span25 ft (7.6 m)
Deck width30 ft (9.1 m)
Roadway width28 ft (8.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic16 (2023)
Projected traffic17 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

OwnerCounty Highway Agency
Maintained byCounty 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$207,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Savoy RD over Drainage 112 built?

It was built in 1951, making it 74 years old in 2025.

What condition is Savoy RD over Drainage 112 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 March 2024.

How much traffic does Savoy RD over Drainage 112 carry?

About 16 vehicles per day (2023 count), of which roughly 3% are trucks.

How long is Savoy RD over Drainage 112?

The structure is 77 ft (23.5 m) long with a longest span of 25 ft (7.6 m) and a deck 30 ft wide.

Who owns Savoy RD over Drainage 112?

It is owned by the County Highway Agency.