US Bridges

SD248 over Medicine Ck

Fair

Lyman County, South Dakota · 1.0 W JCT US 83 · Structure no. 000000043014188

Built
1941
84 years old
Condition
Fair
inspected February 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
122 ft
3 main spans
Daily traffic
251
2024 count
Owner
State
State Highway Agency

About this bridge

SD248 over Medicine Ck is a steel stringer/multi-beam or girder carrying SD248 over Medicine Ck in Lyman County, South Dakota. It was built in 1941, so it is 84 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 251 vehicles a day, roughly 13% of them trucks, projected to reach 346 by 2044. The structure is 122 ft (37.2 m) long and 33 ft wide.

Location

Open in Google Maps
CarriesSD248
CrossesMedicine Ck
Location1.0 W JCT US 83
RouteState Highway 248
CountyLyman County
StateSouth Dakota
Coordinates43.92304, -100.33901
Functional classRural Major Collector

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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
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 alignment8: Equal to present desirable criteria
Operating rating48.5 US tons
Inventory rating29 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadUnknown
Structure length122 ft (37.2 m)
Longest span39 ft (11.9 m)
Deck width33 ft (10.1 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic251 (2024)
Projected traffic346 by 2044
Trucks13%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$515,000
NavigationNo navigation control on waterway

Frequently asked questions

When was SD248 over Medicine Ck built?

It was built in 1941, making it 84 years old in 2025.

What condition is SD248 over Medicine 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 February 2024.

How much traffic does SD248 over Medicine Ck carry?

About 251 vehicles per day (2024 count), of which roughly 13% are trucks.

How long is SD248 over Medicine Ck?

The structure is 122 ft (37.2 m) long with a longest span of 39 ft (11.9 m) and a deck 33 ft wide.

Who owns SD248 over Medicine Ck?

It is owned by the State Highway Agency.