US Bridges

SD044 over Johnson Ck

Fair

Jackson County, South Dakota · 1 E of Interior · Structure no. 000000036088190

Built
1956
69 years old
Condition
Fair
inspected March 2025
Type
Slab
Concrete Continuous
Length
106 ft
5 main spans
Daily traffic
526
2024 count
Owner
State
State Highway Agency

About this bridge

SD044 over Johnson Ck is a concrete continuous slab carrying SD044 over Johnson Ck in Jackson 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 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 526 vehicles a day, roughly 7% of them trucks, projected to reach 758 by 2044. The structure is 106 ft (32.2 m) long and 28 ft wide. If it were closed, the detour would be 13 mi (21 km).

CarriesSD044
CrossesJohnson Ck
Location1 E of Interior
RouteState Highway 44
Coordinates43.71957, -101.96446
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.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2025
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 geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating44 US tons
Inventory rating26.3 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans5
Design loadH 15
Structure length106 ft (32.2 m)
Longest span21 ft (6.3 m)
Deck width28 ft (8.6 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic526 (2024)
Projected traffic758 by 2044
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed13 mi (21 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 SD044 over Johnson Ck built?

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

What condition is SD044 over Johnson 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 March 2025.

How much traffic does SD044 over Johnson Ck carry?

About 526 vehicles per day (2024 count), of which roughly 7% are trucks.

How long is SD044 over Johnson Ck?

The structure is 106 ft (32.2 m) long with a longest span of 21 ft (6.3 m) and a deck 28 ft wide.

Who owns SD044 over Johnson Ck?

It is owned by the State Highway Agency.