US Bridges

Cave Hill RD over Bull Ck

Fair

Harding County, South Dakota · 6 E 2 S Ladner · Structure no. 000000032220105

Built
1977
48 years old
Condition
Fair
inspected April 2024
Type
Tee Beam
Prestressed Concrete
Length
100 ft
3 main spans
Daily traffic
131
2022 count
Owner
County
County Highway Agency

About this bridge

Cave Hill RD over Bull Ck is a prestressed concrete tee beam carrying Cave Hill RD over Bull Ck in Harding County, South Dakota. It was built in 1977, so it is 48 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 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.

It carries about 131 vehicles a day, roughly 3% of them trucks, projected to reach 131 by 2032. The structure is 100 ft (30.5 m) long and 27 ft wide. If it were closed, the detour would be 28 mi (45 km).

Location

Open in Google Maps
CarriesCave Hill RD
CrossesBull Ck
Location6 E 2 S Ladner
RouteCounty Highway 0
CountyHarding County
StateSouth Dakota
Coordinates45.80002, -103.60684
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
Deck7 GoodSome minor problems.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no 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 adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating36 US tons
Inventory rating21.1 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans3
Design loadHS 20
Structure length100 ft (30.5 m)
Longest span40 ft (12.2 m)
Deck width27 ft (8.2 m)
Roadway width27 ft (8.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic131 (2022)
Projected traffic131 by 2032
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed28 mi (45 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 proposedOther structural work, including hydraulic replacements
Estimated improvement cost$25,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Cave Hill RD over Bull Ck built?

It was built in 1977, making it 48 years old in 2025.

What condition is Cave Hill RD over Bull 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 April 2024.

How much traffic does Cave Hill RD over Bull Ck carry?

About 131 vehicles per day (2022 count), of which roughly 3% are trucks.

How long is Cave Hill RD over Bull Ck?

The structure is 100 ft (30.5 m) long with a longest span of 40 ft (12.2 m) and a deck 27 ft wide.

Who owns Cave Hill RD over Bull Ck?

It is owned by the County Highway Agency.