US Bridges

SD034 over East Elm Ck

Fair

Meade County, South Dakota · 7.5 W of Union Center · Structure no. 000000047382348

Built
1956
69 years old
Condition
Fair
inspected December 2023
Type
Slab
Concrete Continuous
Length
117 ft
5 main spans
Daily traffic
930
2024 count
Owner
State
State Highway Agency

About this bridge

SD034 over East Elm Ck is a concrete continuous slab carrying SD034 over East Elm Ck in Meade County, South Dakota. It was built in 1956, so it is 69 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 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 930 vehicles a day, roughly 21% of them trucks, projected to reach 1,482 by 2044. The structure is 117 ft (35.7 m) long and 34 ft wide. If it were closed, the detour would be 51 mi (82 km).

CarriesSD034
CrossesEast Elm Ck
Location7.5 W of Union Center
RouteState Highway 34
Coordinates44.53514, -102.79916
Functional classRural Principal Arterial - Other

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
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 inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating55.4 US tons
Inventory rating33.2 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans5
Design loadH 20
Structure length117 ft (35.7 m)
Longest span23 ft (7.1 m)
Deck width34 ft (10.5 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic930 (2024)
Projected traffic1,482 by 2044
Trucks21%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed51 mi (82 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedDeck rehabilitation with only incidental widening
Estimated improvement cost$76,000
NavigationNo navigation control on waterway

Frequently asked questions

When was SD034 over East Elm Ck built?

It was built in 1956, making it 69 years old in 2025.

What condition is SD034 over East Elm 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 December 2023.

How much traffic does SD034 over East Elm Ck carry?

About 930 vehicles per day (2024 count), of which roughly 21% are trucks.

How long is SD034 over East Elm Ck?

The structure is 117 ft (35.7 m) long with a longest span of 23 ft (7.1 m) and a deck 34 ft wide.

Who owns SD034 over East Elm Ck?

It is owned by the State Highway Agency.