US Bridges

S 243 over Stinky Creek

Fair

Phillips County, Montana · 9M NW Saco · Structure no. S00243012+02001

Built
2003
22 years old
Condition
Fair
inspected April 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
79 ft
1 main span
Daily traffic
39
2023 count
Owner
County
County Highway Agency

About this bridge

S 243 over Stinky Creek is a prestressed concrete stringer/multi-beam or girder carrying S 243 over Stinky Creek 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 39 vehicles a day, roughly 5% of them trucks, projected to reach 41 by 2043. The structure is 79 ft (24 m) long and 30 ft wide. If it were closed, the detour would be 21.1 mi (34 km).

CarriesS 243
CrossesStinky Creek
Location9M NW Saco
RouteCounty Highway 243
StateMontana
Coordinates48.54991, -107.41726
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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating59 US tons
Inventory rating39 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length79 ft (24 m)
Longest span79 ft (24 m)
Deck width30 ft (9.1 m)
Roadway width28 ft (8.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic39 (2023)
Projected traffic41 by 2043
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed21.1 mi (34 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 S 243 over Stinky Creek built?

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

What condition is S 243 over Stinky 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 April 2024.

How much traffic does S 243 over Stinky Creek carry?

About 39 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is S 243 over Stinky Creek?

The structure is 79 ft (24 m) long with a longest span of 79 ft (24 m) and a deck 30 ft wide.

Who owns S 243 over Stinky Creek?

It is owned by the County Highway Agency.