US Bridges

State Park RD over South Scalp Ck

PoorPosted for load

Gregory County, South Dakota · 11.4W & 2.0N Pickstown · Structure no. 000000027385280

Built
1963
62 years old
Condition
Poor
inspected October 2024
Type
Box Beam or Girders - Multiple
Concrete
Length
55 ft
1 main span
Daily traffic
50
2022 count
Owner
State
Other State Agency

About this bridge

State Park RD over South Scalp Ck is a concrete box beam or girders - multiple carrying State Park RD over South Scalp Ck in Gregory County, South Dakota. It was built in 1963, so it is 62 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 poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: posted for load restriction.

It carries about 50 vehicles a day, roughly 5% of them trucks, projected to reach 50 by 2032. The structure is 55 ft (16.8 m) long and 25 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

CarriesState Park RD
CrossesSouth Scalp Ck
Location11.4W & 2.0N Pickstown
RouteState Lands Road 0
Coordinates43.09721, -98.77597
Functional classRural Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure4 PoorAdvanced section loss, deterioration, 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 evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating25 US tons
Inventory rating18.8 US tons

Structure

MaterialConcrete
DeckConcrete, precast panels
Main spans1
Design loadH 15
Structure length55 ft (16.8 m)
Longest span54 ft (16.5 m)
Deck width25 ft (7.7 m)
Roadway width18 ft (5.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (2022)
Projected traffic50 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$300,000 (2020 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was State Park RD over South Scalp Ck built?

It was built in 1963, making it 62 years old in 2025.

What condition is State Park RD over South Scalp Ck in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in October 2024.

How much traffic does State Park RD over South Scalp Ck carry?

About 50 vehicles per day (2022 count), of which roughly 5% are trucks.

How long is State Park RD over South Scalp Ck?

The structure is 55 ft (16.8 m) long with a longest span of 54 ft (16.5 m) and a deck 25 ft wide.

Who owns State Park RD over South Scalp Ck?

It is owned by the Other State Agency.