US Bridges

39740 296th Street over Creek

PoorPosted for load

Charles Mix County, South Dakota · 1.0N & 2.4E of Wagner · Structure no. 000000012534280

Built
1912
113 years old
Condition
Poor
inspected October 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
30 ft
1 main span
Daily traffic
48
2022 count
Owner
County
County Highway Agency

About this bridge

39740 296th Street over Creek is a steel stringer/multi-beam or girder carrying 39740 296th Street over Creek in Charles Mix County, South Dakota. It was built in 1912, so it is 113 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 poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: posted for load restriction.

It carries about 48 vehicles a day, roughly 2% of them trucks, projected to reach 48 by 2032. The structure is 30 ft (9.1 m) long and 16 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Carries39740 296th Street
CrossesCreek
Location1.0N & 2.4E of Wagner
Coordinates43.09596, -98.23951
Functional classRural Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

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.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry8: Equal to present desirable criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating10 US tons
Inventory rating6 US tons

Structure

MaterialSteel
DeckWood or timber
Main spans1
Design loadUnknown
Structure length30 ft (9.1 m)
Longest span28 ft (8.5 m)
Deck width16 ft (5 m)
Roadway width16 ft (4.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic48 (2022)
Projected traffic48 by 2032
Trucks2%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusEligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$497,000 (2019 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was 39740 296th Street over Creek built?

It was built in 1912, making it 113 years old in 2025.

What condition is 39740 296th Street over Creek in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in October 2023.

How much traffic does 39740 296th Street over Creek carry?

About 48 vehicles per day (2022 count), of which roughly 2% are trucks.

How long is 39740 296th Street over Creek?

The structure is 30 ft (9.1 m) long with a longest span of 28 ft (8.5 m) and a deck 16 ft wide.

Who owns 39740 296th Street over Creek?

It is owned by the County Highway Agency.