US Bridges

Saint Philip RD over Beaver Creek

Good

Wibaux County, Montana · 11M S Wibaux · Structure no. 000000202306764

Built
2023
2 years old
Condition
Good
inspected August 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
127 ft
1 main span
Daily traffic
50
2023 count
Owner
County
County Highway Agency

About this bridge

Saint Philip RD over Beaver Creek is a prestressed concrete stringer/multi-beam or girder carrying Saint Philip RD over Beaver Creek in Wibaux County, Montana. It was built in 2023, so it is 2 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 50 vehicles a day, roughly 2% of them trucks, projected to reach 57 by 2043. The structure is 127 ft (38.7 m) long and 30 ft wide. If it were closed, the detour would be 11.8 mi (19 km).

CarriesSaint Philip RD
CrossesBeaver Creek
Location11M S Wibaux
RouteCounty Highway 413
StateMontana
Coordinates46.84027, -104.18576
Functional classRural Major Collector

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 protection7 GoodSome minor problems.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation8: Equal to present desirable criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating53.6 US tons
Inventory rating39.2 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHL 93
Structure length127 ft (38.7 m)
Longest span124 ft (37.9 m)
Deck width30 ft (9.1 m)
Roadway width28 ft (8.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (2023)
Projected traffic57 by 2043
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed11.8 mi (19 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 Saint Philip RD over Beaver Creek built?

It was built in 2023, making it 2 years old in 2025.

What condition is Saint Philip RD over Beaver Creek 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 August 2023.

How much traffic does Saint Philip RD over Beaver Creek carry?

About 50 vehicles per day (2023 count), of which roughly 2% are trucks.

How long is Saint Philip RD over Beaver Creek?

The structure is 127 ft (38.7 m) long with a longest span of 124 ft (37.9 m) and a deck 30 ft wide.

Who owns Saint Philip RD over Beaver Creek?

It is owned by the County Highway Agency.