US Bridges

240th Street over Big Sioux River

Fair

Moody County, South Dakota · 3rd Street in Trent · Structure no. 000000051113200

Built
2004
21 years old
Condition
Fair
inspected August 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
273 ft
3 main spans
Daily traffic
555
2022 count
Owner
County
County Highway Agency

About this bridge

240th Street over Big Sioux River is a prestressed concrete continuous stringer/multi-beam or girder carrying 240th Street over Big Sioux River in Moody County, South Dakota. It was built in 2004, so it is 21 years old, younger 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.

It carries about 555 vehicles a day, roughly 3% of them trucks, projected to reach 680 by 2032. The structure is 273 ft (83.2 m) long and 33 ft wide. If it were closed, the detour would be 14.3 mi (23 km).

Carries240th Street
CrossesBig Sioux River
Location3rd Street in Trent
RouteCounty Highway 0
Coordinates43.90636, -96.6623
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment9: Superior to present desirable criteria
Operating rating35.9 US tons
Inventory rating27.7 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length273 ft (83.2 m)
Longest span91 ft (27.6 m)
Deck width33 ft (10 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic555 (2022)
Projected traffic680 by 2032
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed14.3 mi (23 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 240th Street over Big Sioux River built?

It was built in 2004, making it 21 years old in 2025.

What condition is 240th Street over Big Sioux River 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 August 2024.

How much traffic does 240th Street over Big Sioux River carry?

About 555 vehicles per day (2022 count), of which roughly 3% are trucks.

How long is 240th Street over Big Sioux River?

The structure is 273 ft (83.2 m) long with a longest span of 91 ft (27.6 m) and a deck 33 ft wide.

Who owns 240th Street over Big Sioux River?

It is owned by the County Highway Agency.