US Bridges

229th Street over Overflow Sand Ck

Good

Sanborn County, South Dakota · 5.8E & 1N Woonsocket · Structure no. 000000056088090

Built
2014
11 years old
Condition
Good
inspected August 2024
Type
Culvert
Steel
Length
31 ft
4 main spans
Daily traffic
56
2022 count
Owner
County
County Highway Agency

About this bridge

229th Street over Overflow Sand Ck is a steel culvert carrying 229th Street over Overflow Sand Ck in Sanborn County, South Dakota. It was built in 2014, so it is 11 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 56 vehicles a day, roughly 2% of them trucks, projected to reach 56 by 2032. The structure is 31 ft (9.5 m) long. If it were closed, the detour would be 3.7 mi (6 km).

Carries229th Street
CrossesOverflow Sand Ck
Location5.8E & 1N Woonsocket
RouteCounty Highway 0
Coordinates44.06884, -98.15446
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 protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert7 GoodSome minor problems.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
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 spans4
Design loadHL 93
Structure length31 ft (9.5 m)
Longest span6 ft (1.8 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic56 (2022)
Projected traffic56 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 229th Street over Overflow Sand Ck built?

It was built in 2014, making it 11 years old in 2025.

What condition is 229th Street over Overflow Sand 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 August 2024.

How much traffic does 229th Street over Overflow Sand Ck carry?

About 56 vehicles per day (2022 count), of which roughly 2% are trucks.

How long is 229th Street over Overflow Sand Ck?

The structure is 31 ft (9.5 m) long with a longest span of 6 ft (1.8 m).

Who owns 229th Street over Overflow Sand Ck?

It is owned by the County Highway Agency.