US Bridges

204th Street over Oakwood Lake Overflow

Good

Brookings County, South Dakota · 1.7W & 1S Bruce · Structure no. 000000006103080

Built
1962
63 years old
Condition
Good
inspected September 2024
Type
Culvert
Concrete Continuous
Length
25 ft
3 main spans
Daily traffic
432
2022 count
Owner
County
County Highway Agency

About this bridge

204th Street over Oakwood Lake Overflow is a concrete continuous culvert carrying 204th Street over Oakwood Lake Overflow in Brookings County, South Dakota. It was built in 1962, so it is 63 years old, older 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 432 vehicles a day, roughly 3% of them trucks, projected to reach 432 by 2032. The structure is 25 ft (7.6 m) long. If it were closed, the detour would be 1.9 mi (3 km).

Carries204th Street
CrossesOakwood Lake Overflow
Location1.7W & 1S Bruce
RouteCounty Highway 0
Coordinates44.42785, -96.92199
Functional classRural Major Collector

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 inspectionSeptember 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating72.9 US tons
Inventory rating43.7 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 20
Structure length25 ft (7.6 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 traffic432 (2022)
Projected traffic432 by 2032
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$687,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was 204th Street over Oakwood Lake Overflow built?

It was built in 1962, making it 63 years old in 2025.

What condition is 204th Street over Oakwood Lake Overflow 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 September 2024.

How much traffic does 204th Street over Oakwood Lake Overflow carry?

About 432 vehicles per day (2022 count), of which roughly 3% are trucks.

How long is 204th Street over Oakwood Lake Overflow?

The structure is 25 ft (7.6 m) long with a longest span of 8 ft (2.4 m).

Who owns 204th Street over Oakwood Lake Overflow?

It is owned by the County Highway Agency.