US Bridges

239th Street over Grouse Creek

Good

Lyman County, South Dakota · 2N & 0.3E of Kennebec · Structure no. 000000043253180

Built
2000
25 years old
Condition
Good
inspected July 2024
Type
Tee Beam
Prestressed Concrete
Length
65 ft
1 main span
Daily traffic
10
2022 count
Owner
County
County Highway Agency

About this bridge

239th Street over Grouse Creek is a prestressed concrete tee beam carrying 239th Street over Grouse Creek in Lyman County, South Dakota. It was built in 2000, so it is 25 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 good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 10 vehicles a day, roughly 2% of them trucks, projected to reach 10 by 2032. The structure is 65 ft (19.8 m) long and 31 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Carries239th Street
CrossesGrouse Creek
Location2N & 0.3E of Kennebec
Coordinates43.93426, -99.85859
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating36 US tons
Inventory rating27 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length65 ft (19.8 m)
Longest span64 ft (19.5 m)
Deck width31 ft (9.3 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10 (2022)
Projected traffic10 by 2032
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 239th Street over Grouse Creek built?

It was built in 2000, making it 25 years old in 2025.

What condition is 239th Street over Grouse Creek in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in July 2024.

How much traffic does 239th Street over Grouse Creek carry?

About 10 vehicles per day (2022 count), of which roughly 2% are trucks.

How long is 239th Street over Grouse Creek?

The structure is 65 ft (19.8 m) long with a longest span of 64 ft (19.5 m) and a deck 31 ft wide.

Who owns 239th Street over Grouse Creek?

It is owned by the County Highway Agency.