US Bridges

SD046 over Beaver Ck

Good

Bon Homme County, South Dakota · 4.9 W JCT Sd 25 · Structure no. 000000005184060

Built
1966
59 years old
Condition
Good
inspected September 2024
Type
Culvert
Concrete Continuous
Length
25 ft
3 main spans
Daily traffic
709
2024 count
Owner
State
State Highway Agency

About this bridge

SD046 over Beaver Ck is a concrete continuous culvert carrying SD046 over Beaver Ck in Bon Homme 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 good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 709 vehicles a day, roughly 18% of them trucks, projected to reach 1,042 by 2044. The structure is 25 ft (7.6 m) long. If it were closed, the detour would be 16.2 mi (26 km).

CarriesSD046
CrossesBeaver Ck
Location4.9 W JCT Sd 25
RouteState Highway 46
Coordinates43.08291, -97.80614
Functional classRural Minor Arterial

Condition and inspection

Good

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

ComponentRatingMeaning
Channel and channel protection8 Very GoodNo problems noted.
Culvert7 GoodSome minor problems.
Last inspectionSeptember 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating73.3 US tons
Inventory rating43.9 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans3
Design loadHS 20
Structure length25 ft (7.6 m)
Longest span8 ft (2.4 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic709 (2024)
Projected traffic1,042 by 2044
Trucks18%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed16.2 mi (26 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost$15,000
NavigationNo navigation control on waterway

Frequently asked questions

When was SD046 over Beaver Ck built?

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

What condition is SD046 over Beaver 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 September 2024.

How much traffic does SD046 over Beaver Ck carry?

About 709 vehicles per day (2024 count), of which roughly 18% are trucks.

How long is SD046 over Beaver Ck?

The structure is 25 ft (7.6 m) long with a longest span of 8 ft (2.4 m).

Who owns SD046 over Beaver Ck?

It is owned by the State Highway Agency.