US Bridges

State Park RD over Sand Ck

FairPosted for load

Stanley County, South Dakota · 3.5S & 11.0E Fort Pierre · Structure no. 000000059497328

Built
1964
61 years old
Condition
Fair
inspected October 2024
Type
Channel Beam
Concrete
Length
31 ft
1 main span
Daily traffic
10
2022 count
Owner
State
Other State Agency

About this bridge

State Park RD over Sand Ck is a concrete channel beam carrying State Park RD over Sand Ck in Stanley County, South Dakota. It was built in 1964, so it is 61 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 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for load restriction.

It carries about 10 vehicles a day, roughly 5% of them trucks, projected to reach 10 by 2032. The structure is 31 ft (9.4 m) long and 24 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

CarriesState Park RD
CrossesSand Ck
Location3.5S & 11.0E Fort Pierre
RouteState Lands Road 0
Coordinates44.30347, -100.17273
Functional classRural Local

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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating32 US tons
Inventory rating24 US tons

Structure

Structure typeChannel Beam
MaterialConcrete
DeckConcrete, precast panels
Main spans1
Design loadH 15
Structure length31 ft (9.4 m)
Longest span30 ft (9.1 m)
Deck width24 ft (7.3 m)
Roadway width23 ft (6.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10 (2022)
Projected traffic10 by 2032
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerOther State Agency
Maintained byOther State Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$10,000 (2020 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was State Park RD over Sand Ck built?

It was built in 1964, making it 61 years old in 2025.

What condition is State Park RD over Sand 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 October 2024.

How much traffic does State Park RD over Sand Ck carry?

About 10 vehicles per day (2022 count), of which roughly 5% are trucks.

How long is State Park RD over Sand Ck?

The structure is 31 ft (9.4 m) long with a longest span of 30 ft (9.1 m) and a deck 24 ft wide.

Who owns State Park RD over Sand Ck?

It is owned by the Other State Agency.