US Bridges

28120 449 Ave over Drainage Ditch

PoorPosted for load

Turner County, South Dakota · 2E & 7.2S Marion · Structure no. 000000063090132

Built
1930
95 years old, rebuilt 1960
Condition
Poor
inspected August 2023
Type
Culvert
Masonry
Length
25 ft
2 main spans
Daily traffic
10
2022 count
Owner
County
County Highway Agency

About this bridge

28120 449 Ave over Drainage Ditch is a masonry culvert carrying 28120 449 Ave over Drainage Ditch in Turner County, South Dakota. It was built in 1930 and reconstructed in 1960, so it is 95 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 3 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 10 vehicles a day, roughly 2% of them trucks, projected to reach 10 by 2032. The structure is 25 ft (7.5 m) long. If it were closed, the detour would be 3.1 mi (5 km).

Location

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Carries28120 449 Ave
CrossesDrainage Ditch
Location2E & 7.2S Marion
RouteCounty Highway 0
CountyTurner County
StateSouth Dakota
Coordinates43.31109, -97.22119
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
Channel and channel protection8 Very GoodNo problems noted.
Culvert3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating21.6 US tons
Inventory rating16.2 US tons

Structure

Structure typeCulvert
MaterialMasonry
DeckNot applicable
Main spans2
Design loadUnknown
Structure length25 ft (7.5 m)
Longest span10 ft (3.1 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10 (2022)
Projected traffic10 by 2032
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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$325,000
NavigationNo navigation control on waterway

Frequently asked questions

When was 28120 449 Ave over Drainage Ditch built?

It was built in 1930, making it 95 years old in 2025. It was reconstructed in 1960.

What condition is 28120 449 Ave over Drainage Ditch 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 August 2023.

How much traffic does 28120 449 Ave over Drainage Ditch carry?

About 10 vehicles per day (2022 count), of which roughly 2% are trucks.

How long is 28120 449 Ave over Drainage Ditch?

The structure is 25 ft (7.5 m) long with a longest span of 10 ft (3.1 m).

Who owns 28120 449 Ave over Drainage Ditch?

It is owned by the County Highway Agency.