US Bridges

483rd Avenue over Trib to Split Rock Ck

Poor

Minnehaha County, South Dakota · 1.1N & 1E Corson · Structure no. 000000050290149

Built
1938
87 years old
Condition
Poor
inspected June 2024
Type
Culvert
Concrete Continuous
Length
21 ft
2 main spans
Daily traffic
46
2022 count
Owner
County
County Highway Agency

About this bridge

483rd Avenue over Trib to Split Rock Ck is a concrete continuous culvert carrying 483rd Avenue over Trib to Split Rock Ck in Minnehaha 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.

It carries about 46 vehicles a day, roughly 2% of them trucks, projected to reach 53 by 2037. The structure is 21 ft (6.3 m) long. If it were closed, the detour would be 1.9 mi (3 km).

Carries483rd Avenue
CrossesTrib to Split Rock Ck
Location1.1N & 1E Corson
RouteCounty Highway 0
Coordinates43.63151, -96.55191
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 protection7 GoodSome minor problems.
Culvert4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment7: Better than present minimum criteria
Operating rating36 US tons
Inventory rating21.6 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadUnknown
Structure length21 ft (6.3 m)
Longest span11 ft (3.3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic46 (2022)
Projected traffic53 by 2037
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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$205,000 (2018 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was 483rd Avenue over Trib to Split Rock Ck built?

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

What condition is 483rd Avenue over Trib to Split Rock Ck 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 June 2024.

How much traffic does 483rd Avenue over Trib to Split Rock Ck carry?

About 46 vehicles per day (2022 count), of which roughly 2% are trucks.

How long is 483rd Avenue over Trib to Split Rock Ck?

The structure is 21 ft (6.3 m) long with a longest span of 11 ft (3.3 m).

Who owns 483rd Avenue over Trib to Split Rock Ck?

It is owned by the County Highway Agency.