US Bridges

SD248 over Tin Pan Ck

Fair

Lyman County, South Dakota · 4.6 W JCT US 183 · Structure no. 000000043114200

Built
1953
72 years old
Condition
Fair
inspected September 2023
Type
Slab
Concrete Continuous
Length
101 ft
4 main spans
Daily traffic
250
2024 count
Owner
State
State Highway Agency

About this bridge

SD248 over Tin Pan Ck is a concrete continuous slab carrying SD248 over Tin Pan Ck in Lyman County, South Dakota. It was built in 1953, so it is 72 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 250 vehicles a day, roughly 19% of them trucks, projected to reach 353 by 2044. The structure is 101 ft (30.8 m) long and 34 ft wide.

CarriesSD248
CrossesTin Pan Ck
Location4.6 W JCT US 183
RouteState Highway 248
Coordinates43.90531, -100.13767
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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 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 alignment8: Equal to present desirable criteria
Operating rating43.1 US tons
Inventory rating25.5 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadH 20
Structure length101 ft (30.8 m)
Longest span26 ft (7.9 m)
Deck width34 ft (10.5 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic250 (2024)
Projected traffic353 by 2044
Trucks19%
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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was SD248 over Tin Pan Ck built?

It was built in 1953, making it 72 years old in 2025.

What condition is SD248 over Tin Pan 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 September 2023.

How much traffic does SD248 over Tin Pan Ck carry?

About 250 vehicles per day (2024 count), of which roughly 19% are trucks.

How long is SD248 over Tin Pan Ck?

The structure is 101 ft (30.8 m) long with a longest span of 26 ft (7.9 m) and a deck 34 ft wide.

Who owns SD248 over Tin Pan Ck?

It is owned by the State Highway Agency.