US Bridges

S 540-E River RD over Emigrant Creek

Fair

Park County, Montana · 5M SW Pray · Structure no. S00540008+09201

Built
2006
19 years old
Condition
Fair
inspected July 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
67 ft
1 main span
Daily traffic
262
2023 count
Owner
State
State Highway Agency

About this bridge

S 540-E River RD over Emigrant Creek is a prestressed concrete stringer/multi-beam or girder carrying S 540-E River RD over Emigrant Creek in Park County, Montana. It was built in 2006, so it is 19 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 262 vehicles a day, projected to reach 275 by 2043. The structure is 67 ft (20.3 m) long and 30 ft wide. If it were closed, the detour would be 18 mi (29 km).

Location

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CarriesS 540-E River RD
CrossesEmigrant Creek
Location5M SW Pray
RouteState Highway 540
CountyPark County
StateMontana
Coordinates45.3308, -110.75368
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating57 US tons
Inventory rating42 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length67 ft (20.3 m)
Longest span66 ft (20 m)
Deck width30 ft (9.1 m)
Roadway width28 ft (8.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic262 (2023)
Projected traffic275 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed18 mi (29 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 proposedNone recorded
Estimated improvement cost$49,000
NavigationNo navigation control on waterway

Frequently asked questions

When was S 540-E River RD over Emigrant Creek built?

It was built in 2006, making it 19 years old in 2025.

What condition is S 540-E River RD over Emigrant Creek 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 July 2024.

How much traffic does S 540-E River RD over Emigrant Creek carry?

About 262 vehicles per day (2023 count).

How long is S 540-E River RD over Emigrant Creek?

The structure is 67 ft (20.3 m) long with a longest span of 66 ft (20 m) and a deck 30 ft wide.

Who owns S 540-E River RD over Emigrant Creek?

It is owned by the State Highway Agency.