US Bridges

31500 455 Ave over Yankton Clay Ditch

PoorPosted for load

Clay County, South Dakota · 18S & 3E Irene Sd · Structure no. 000000014030180

Built
1938
87 years old
Condition
Poor
inspected August 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
41 ft
3 main spans
Daily traffic
25
2022 count
Owner
County
County Highway Agency

About this bridge

31500 455 Ave over Yankton Clay Ditch is a steel stringer/multi-beam or girder carrying 31500 455 Ave over Yankton Clay Ditch in Clay County, South Dakota. It was built in 1938, so it is 87 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 25 vehicles a day, roughly 2% of them trucks, projected to reach 97 by 2032. The structure is 41 ft (12.6 m) long and 19 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Carries31500 455 Ave
CrossesYankton Clay Ditch
Location18S & 3E Irene Sd
RouteCounty Highway 0
Coordinates42.82252, -97.10132
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating29.1 US tons
Inventory rating17.4 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length41 ft (12.6 m)
Longest span13 ft (4.1 m)
Deck width19 ft (5.9 m)
Roadway width18 ft (5.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic25 (2022)
Projected traffic97 by 2032
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 proposedOther structural work, including hydraulic replacements
Estimated improvement cost$25,000
NavigationNo navigation control on waterway

Frequently asked questions

When was 31500 455 Ave over Yankton Clay Ditch built?

It was built in 1938, making it 87 years old in 2025.

What condition is 31500 455 Ave over Yankton Clay 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 2024.

How much traffic does 31500 455 Ave over Yankton Clay Ditch carry?

About 25 vehicles per day (2022 count), of which roughly 2% are trucks.

How long is 31500 455 Ave over Yankton Clay Ditch?

The structure is 41 ft (12.6 m) long with a longest span of 13 ft (4.1 m) and a deck 19 ft wide.

Who owns 31500 455 Ave over Yankton Clay Ditch?

It is owned by the County Highway Agency.