US Bridges

28770 423 Ave. over South Br Lonetree Ck

PoorPosted for load

Hutchinson County, South Dakota · 3 W & 1.7 S Olivet · Structure no. 000000034190197

Built
1960
65 years old
Condition
Poor
inspected May 2024
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
28 ft
2 main spans
Daily traffic
69
2022 count
Owner
County
County Highway Agency

About this bridge

28770 423 Ave. over South Br Lonetree Ck is a wood or timber stringer/multi-beam or girder carrying 28770 423 Ave. over South Br Lonetree Ck in Hutchinson County, South Dakota. It was built in 1960, so it is 65 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 69 vehicles a day, roughly 2% of them trucks, projected to reach 69 by 2032. The structure is 28 ft (8.4 m) long and 25 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Carries28770 423 Ave.
CrossesSouth Br Lonetree Ck
Location3 W & 1.7 S Olivet
RouteCounty Highway 0
Coordinates43.21744, -97.73725
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 protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMay 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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating27 US tons
Inventory rating20.2 US tons

Structure

MaterialWood or Timber
DeckConcrete, cast-in-place
Main spans2
Design loadUnknown
Structure length28 ft (8.4 m)
Longest span13 ft (4.1 m)
Deck width25 ft (7.6 m)
Roadway width23 ft (7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic69 (2022)
Projected traffic69 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$343,000
NavigationNo navigation control on waterway

Frequently asked questions

When was 28770 423 Ave. over South Br Lonetree Ck built?

It was built in 1960, making it 65 years old in 2025.

What condition is 28770 423 Ave. over South Br Lonetree 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 May 2024.

How much traffic does 28770 423 Ave. over South Br Lonetree Ck carry?

About 69 vehicles per day (2022 count), of which roughly 2% are trucks.

How long is 28770 423 Ave. over South Br Lonetree Ck?

The structure is 28 ft (8.4 m) long with a longest span of 13 ft (4.1 m) and a deck 25 ft wide.

Who owns 28770 423 Ave. over South Br Lonetree Ck?

It is owned by the County Highway Agency.