US Bridges

260 ST over Platte Ck

Good

Aurora County, South Dakota · 8S 3.3W White Lake · Structure no. 000000002007220

Built
2004
21 years old
Condition
Good
inspected July 2021
Type
Culvert
Concrete Continuous
Length
37 ft
3 main spans
Daily traffic
82
2022 count
Owner
County
County Highway Agency

About this bridge

260 ST over Platte Ck is a concrete continuous culvert carrying 260 ST over Platte Ck in Aurora 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 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 82 vehicles a day, roughly 8% of them trucks, projected to reach 87 by 2032. The structure is 37 ft (11.3 m) long. If it were closed, the detour would be 3.7 mi (6 km).

Carries260 ST
CrossesPlatte Ck
Location8S 3.3W White Lake
RouteCounty Highway 0
Coordinates43.61442, -98.78019
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
Channel and channel protection8 Very GoodNo problems noted.
Culvert7 GoodSome minor problems.
Last inspectionJuly 2021
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment9: Superior to present desirable criteria
Operating rating95.5 US tons
Inventory rating57.7 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans3
Design loadHS 20 + Mod
Structure length37 ft (11.3 m)
Longest span12 ft (3.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic82 (2022)
Projected traffic87 by 2032
Trucks8%
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 260 ST over Platte Ck built?

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

What condition is 260 ST over Platte Ck 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 2021.

How much traffic does 260 ST over Platte Ck carry?

About 82 vehicles per day (2022 count), of which roughly 8% are trucks.

How long is 260 ST over Platte Ck?

The structure is 37 ft (11.3 m) long with a longest span of 12 ft (3.7 m).

Who owns 260 ST over Platte Ck?

It is owned by the County Highway Agency.