US Bridges

Sharpe Road over Box Elder Ck

Good

Pennington County, South Dakota · 5.4E&2S New Underwood · Structure no. 000000052664309

Built
2017
8 years old
Condition
Good
inspected June 2024
Type
Tee Beam
Prestressed Concrete
Length
82 ft
1 main span
Daily traffic
21
2022 count
Owner
County
County Highway Agency

About this bridge

Sharpe Road over Box Elder Ck is a prestressed concrete tee beam carrying Sharpe Road over Box Elder Ck in Pennington County, South Dakota. It was built in 2017, so it is 8 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 good condition with a lowest component rating of 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 21 vehicles a day, roughly 2% of them trucks, projected to reach 21 by 2032. The structure is 82 ft (25 m) long and 23 ft wide. If it were closed, the detour would be 22.4 mi (36 km).

CarriesSharpe Road
CrossesBox Elder Ck
Location5.4E&2S New Underwood
RouteCounty Highway 0
Coordinates44.06809, -102.72007
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
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 rating63.6 US tons
Inventory rating49.1 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHL 93
Structure length82 ft (25 m)
Longest span80 ft (24.4 m)
Deck width23 ft (6.9 m)
Roadway width23 ft (6.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic21 (2022)
Projected traffic21 by 2032
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed22.4 mi (36 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 Sharpe Road over Box Elder Ck built?

It was built in 2017, making it 8 years old in 2025.

What condition is Sharpe Road over Box Elder Ck 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 June 2024.

How much traffic does Sharpe Road over Box Elder Ck carry?

About 21 vehicles per day (2022 count), of which roughly 2% are trucks.

How long is Sharpe Road over Box Elder Ck?

The structure is 82 ft (25 m) long with a longest span of 80 ft (24.4 m) and a deck 23 ft wide.

Who owns Sharpe Road over Box Elder Ck?

It is owned by the County Highway Agency.