US Bridges

32200 477th Ave over Lewis Ditch

PoorPosted for load

Union County, South Dakota · 1E & 2N Elk Point · Structure no. 000000064070250

Built
1968
57 years old
Condition
Poor
inspected July 2024
Type
Channel Beam
Concrete
Length
63 ft
2 main spans
Daily traffic
40
2022 count
Owner
County
County Highway Agency

About this bridge

32200 477th Ave over Lewis Ditch is a concrete channel beam carrying 32200 477th Ave over Lewis Ditch in Union County, South Dakota. It was built in 1968, so it is 57 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 40 vehicles a day, roughly 2% of them trucks, projected to reach 40 by 2032. The structure is 63 ft (19.1 m) long and 26 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Carries32200 477th Ave
CrossesLewis Ditch
Location1E & 2N Elk Point
RouteCounty Highway 0
Coordinates42.72202, -96.66528
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
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJuly 2024
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating18 US tons
Inventory rating13.4 US tons

Structure

Structure typeChannel Beam
MaterialConcrete
DeckConcrete, precast panels
Main spans2
Design loadUnknown
Structure length63 ft (19.1 m)
Longest span31 ft (9.4 m)
Deck width26 ft (7.8 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic40 (2022)
Projected traffic40 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 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 32200 477th Ave over Lewis Ditch built?

It was built in 1968, making it 57 years old in 2025.

What condition is 32200 477th Ave over Lewis 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 July 2024.

How much traffic does 32200 477th Ave over Lewis Ditch carry?

About 40 vehicles per day (2022 count), of which roughly 2% are trucks.

How long is 32200 477th Ave over Lewis Ditch?

The structure is 63 ft (19.1 m) long with a longest span of 31 ft (9.4 m) and a deck 26 ft wide.

Who owns 32200 477th Ave over Lewis Ditch?

It is owned by the County Highway Agency.