US Bridges

Whitewood Valley over Whitewood Ck

Fair

Lawrence County, South Dakota · 4.0N 1.8E Whitwood · Structure no. 000000041223060

Built
1966
59 years old
Condition
Fair
inspected July 2024
Type
Slab
Concrete Continuous
Length
119 ft
3 main spans
Daily traffic
49
2022 count
Owner
County
County Highway Agency

About this bridge

Whitewood Valley over Whitewood Ck is a concrete continuous slab carrying Whitewood Valley over Whitewood Ck in Lawrence County, South Dakota. It was built in 1966, so it is 59 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 fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 49 vehicles a day, roughly 3% of them trucks, projected to reach 49 by 2032. The structure is 119 ft (36.3 m) long and 31 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

CarriesWhitewood Valley
CrossesWhitewood Ck
Location4.0N 1.8E Whitwood
RouteCounty Highway 0
Coordinates44.51752, -103.60449
Functional classRural Major Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating51.6 US tons
Inventory rating30.9 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length119 ft (36.3 m)
Longest span45 ft (13.7 m)
Deck width31 ft (9.4 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic49 (2022)
Projected traffic49 by 2032
Trucks3%
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 Whitewood Valley over Whitewood Ck built?

It was built in 1966, making it 59 years old in 2025.

What condition is Whitewood Valley over Whitewood Ck in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in July 2024.

How much traffic does Whitewood Valley over Whitewood Ck carry?

About 49 vehicles per day (2022 count), of which roughly 3% are trucks.

How long is Whitewood Valley over Whitewood Ck?

The structure is 119 ft (36.3 m) long with a longest span of 45 ft (13.7 m) and a deck 31 ft wide.

Who owns Whitewood Valley over Whitewood Ck?

It is owned by the County Highway Agency.