US Bridges

268th Street over Bull Creek

Fair

Lyman County, South Dakota · 8.2W & 2S of Iona · Structure no. 000000043388470

Built
1964
61 years old
Condition
Fair
inspected July 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
155 ft
3 main spans
Daily traffic
10
2022 count
Owner
County
County Highway Agency

About this bridge

268th Street over Bull Creek is a steel stringer/multi-beam or girder carrying 268th Street over Bull Creek in Lyman County, South Dakota. It was built in 1964, so it is 61 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 10 vehicles a day, roughly 3% of them trucks, projected to reach 10 by 2032. The structure is 155 ft (47.2 m) long and 26 ft wide. If it were closed, the detour would be 28 mi (45 km).

Carries268th Street
CrossesBull Creek
Location8.2W & 2S of Iona
RouteCounty Highway 0
Coordinates43.51429, -99.58598
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating43.2 US tons
Inventory rating24.8 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length155 ft (47.2 m)
Longest span51 ft (15.5 m)
Deck width26 ft (8 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10 (2022)
Projected traffic10 by 2032
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed28 mi (45 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 268th Street over Bull Creek built?

It was built in 1964, making it 61 years old in 2025.

What condition is 268th Street over Bull Creek 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 July 2024.

How much traffic does 268th Street over Bull Creek carry?

About 10 vehicles per day (2022 count), of which roughly 3% are trucks.

How long is 268th Street over Bull Creek?

The structure is 155 ft (47.2 m) long with a longest span of 51 ft (15.5 m) and a deck 26 ft wide.

Who owns 268th Street over Bull Creek?

It is owned by the County Highway Agency.