US Bridges

S 243 over Whitewater Creek

PoorPosted for load

Phillips County, Montana · 10 M NW Saco · Structure no. S00243011+07001

Built
1976
49 years old
Condition
Poor
inspected April 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
80 ft
2 main spans
Daily traffic
39
2023 count
Owner
County
County Highway Agency

About this bridge

S 243 over Whitewater Creek is a steel stringer/multi-beam or girder carrying S 243 over Whitewater Creek in Phillips County, Montana. It was built in 1976, so it is 49 years old, older than the Montana average of 47 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: posted for load restriction.

It carries about 39 vehicles a day, roughly 5% of them trucks, projected to reach 41 by 2043. The structure is 80 ft (24.5 m) long and 20 ft wide. If it were closed, the detour would be 21.1 mi (34 km).

CarriesS 243
CrossesWhitewater Creek
Location10 M NW Saco
RouteCounty Highway 243
StateMontana
Coordinates48.55025, -107.42683
Functional classRural Major Collector

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

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.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourScour critical; extensive scour has occurred
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating22.5 US tons
Inventory rating17.2 US tons

Structure

MaterialSteel
DeckCorrugated steel
Main spans2
Design loadUnknown
Structure length80 ft (24.5 m)
Longest span58 ft (17.7 m)
Deck width20 ft (6.1 m)
Roadway width19 ft (5.8 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 Whitewater Creek built?

It was built in 1976, making it 49 years old in 2025.

What condition is S 243 over Whitewater Creek in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in April 2024.

How much traffic does S 243 over Whitewater Creek carry?

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

How long is S 243 over Whitewater Creek?

The structure is 80 ft (24.5 m) long with a longest span of 58 ft (17.7 m) and a deck 20 ft wide.

Who owns S 243 over Whitewater Creek?

It is owned by the County Highway Agency.