US Bridges

SD046 over East Brule Ck

Fair

Union County, South Dakota · 7.9 E of Beresford · Structure no. 000000064096000

Built
1954
71 years old
Condition
Fair
inspected June 2024
Type
Slab
Concrete Continuous
Length
106 ft
5 main spans
Daily traffic
1,745
2024 count
Owner
State
State Highway Agency

About this bridge

SD046 over East Brule Ck is a concrete continuous slab carrying SD046 over East Brule Ck in Union County, South Dakota. It was built in 1954, so it is 71 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 6 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 1,745 vehicles a day, roughly 22% of them trucks, projected to reach 2,687 by 2044. The structure is 106 ft (32.2 m) long and 34 ft wide. If it were closed, the detour would be 26.1 mi (42 km).

CarriesSD046
CrossesEast Brule Ck
Location7.9 E of Beresford
RouteState Highway 46
Coordinates43.08363, -96.61727
Functional classRural Minor Arterial

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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
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 rating42.9 US tons
Inventory rating25.7 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans5
Design loadH 20
Structure length106 ft (32.2 m)
Longest span21 ft (6.3 m)
Deck width34 ft (10.5 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,745 (2024)
Projected traffic2,687 by 2044
Trucks22%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed26.1 mi (42 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was SD046 over East Brule Ck built?

It was built in 1954, making it 71 years old in 2025.

What condition is SD046 over East Brule 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 June 2024.

How much traffic does SD046 over East Brule Ck carry?

About 1,745 vehicles per day (2024 count), of which roughly 22% are trucks.

How long is SD046 over East Brule Ck?

The structure is 106 ft (32.2 m) long with a longest span of 21 ft (6.3 m) and a deck 34 ft wide.

Who owns SD046 over East Brule Ck?

It is owned by the State Highway Agency.