US Bridges

268 ST over Cottonwood Ck

Good

Tripp County, South Dakota · 5.0N & 0.8W Witten · Structure no. 000000062069180

Built
2005
20 years old
Condition
Good
inspected May 2023
Type
Culvert
Steel
Length
30 ft
3 main spans
Daily traffic
61
2022 count
Owner
County
County Highway Agency

About this bridge

268 ST over Cottonwood Ck is a steel culvert carrying 268 ST over Cottonwood Ck in Tripp County, South Dakota. It was built in 2005, so it is 20 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 61 vehicles a day, roughly 2% of them trucks, projected to reach 61 by 2032. The structure is 30 ft (9.1 m) long. If it were closed, the detour would be 9.9 mi (16 km).

Carries268 ST
CrossesCottonwood Ck
Location5.0N & 0.8W Witten
RouteCounty Highway 0
Coordinates43.51447, -100.10199
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 protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Culvert7 GoodSome minor problems.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating110.1 US tons
Inventory rating110.1 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans3
Design loadHL 93
Structure length30 ft (9.1 m)
Longest span8 ft (2.4 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic61 (2022)
Projected traffic61 by 2032
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 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 268 ST over Cottonwood Ck built?

It was built in 2005, making it 20 years old in 2025.

What condition is 268 ST over Cottonwood 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 May 2023.

How much traffic does 268 ST over Cottonwood Ck carry?

About 61 vehicles per day (2022 count), of which roughly 2% are trucks.

How long is 268 ST over Cottonwood Ck?

The structure is 30 ft (9.1 m) long with a longest span of 8 ft (2.4 m).

Who owns 268 ST over Cottonwood Ck?

It is owned by the County Highway Agency.