US Bridges

40401 - 298th ST over Dry Choteau Creek

FairPosted for load

Bon Homme County, South Dakota · 4.0 N & 2.0 W of Avon · Structure no. 000000005031070

Built
1901
124 years old
Condition
Fair
inspected May 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
30 ft
1 main span
Daily traffic
60
2022 count
Owner
County
County Highway Agency

About this bridge

40401 - 298th ST over Dry Choteau Creek is a steel stringer/multi-beam or girder carrying 40401 - 298th ST over Dry Choteau Creek in Bon Homme County, South Dakota. It was built in 1901, so it is 124 years old, older than the South Dakota average of 48.9 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. Its operating status is: posted for load restriction.

It carries about 60 vehicles a day, roughly 3% of them trucks, projected to reach 60 by 2032. The structure is 30 ft (9.1 m) long and 20 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

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Carries40401 - 298th ST
CrossesDry Choteau Creek
Location4.0 N & 2.0 W of Avon
RouteCounty Highway 0
CountyBon Homme County
StateSouth Dakota
Coordinates43.06821, -98.1085
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating16.6 US tons
Inventory rating9.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckWood or timber
Main spans1
Design loadUnknown
Structure length30 ft (9.1 m)
Longest span29 ft (8.8 m)
Deck width20 ft (6.1 m)
Roadway width19 ft (5.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic60 (2022)
Projected traffic60 by 2032
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$491,000 (2017 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was 40401 - 298th ST over Dry Choteau Creek built?

It was built in 1901, making it 124 years old in 2025.

What condition is 40401 - 298th ST over Dry Choteau 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 May 2023.

How much traffic does 40401 - 298th ST over Dry Choteau Creek carry?

About 60 vehicles per day (2022 count), of which roughly 3% are trucks.

How long is 40401 - 298th ST over Dry Choteau Creek?

The structure is 30 ft (9.1 m) long with a longest span of 29 ft (8.8 m) and a deck 20 ft wide.

Who owns 40401 - 298th ST over Dry Choteau Creek?

It is owned by the County Highway Agency.