US Bridges

Dehy RD over Beaver Creek 118

Fair

Phillips County, Montana · 3M NW Saco · Structure no. L36037001+00001

Built
2003
22 years old
Condition
Fair
inspected April 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
180 ft
3 main spans
Daily traffic
100
2025 count
Owner
County
County Highway Agency

About this bridge

Dehy RD over Beaver Creek 118 is a prestressed concrete stringer/multi-beam or girder carrying Dehy RD over Beaver Creek 118 in Phillips County, Montana. It was built in 2003, so it is 22 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 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 100 vehicles a day, roughly 3% of them trucks, projected to reach 100 by 2040. The structure is 180 ft (55 m) long and 30 ft wide. If it were closed, the detour would be 11.2 mi (18 km).

CarriesDehy RD
CrossesBeaver Creek 118
Location3M NW Saco
RouteCounty Highway 36315
StateMontana
Coordinates48.48506, -107.38969
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.
Superstructure7 GoodSome minor problems.
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
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating47 US tons
Inventory rating29 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length180 ft (55 m)
Longest span61 ft (18.5 m)
Deck width30 ft (9.1 m)
Roadway width28 ft (8.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2025)
Projected traffic100 by 2040
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed11.2 mi (18 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Dehy RD over Beaver Creek 118 built?

It was built in 2003, making it 22 years old in 2025.

What condition is Dehy RD over Beaver Creek 118 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 Dehy RD over Beaver Creek 118 carry?

About 100 vehicles per day (2025 count), of which roughly 3% are trucks.

How long is Dehy RD over Beaver Creek 118?

The structure is 180 ft (55 m) long with a longest span of 61 ft (18.5 m) and a deck 30 ft wide.

Who owns Dehy RD over Beaver Creek 118?

It is owned by the County Highway Agency.