US Bridges

Kentucky Pl. over Sulfur Ck

Fair

Meade County, South Dakota · 9.8S & 2.1E Mud Butte · Structure no. 000000047371119

Built
1925
100 years old
Condition
Fair
inspected July 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
42 ft
1 main span
Daily traffic
30
2022 count
Owner
County
County Highway Agency

About this bridge

Kentucky Pl. over Sulfur Ck is a steel stringer/multi-beam or girder carrying Kentucky Pl. over Sulfur Ck in Meade County, South Dakota. It was built in 1925, so it is 100 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 fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 30 vehicles a day, projected to reach 30 by 2042. The structure is 42 ft (12.7 m) long and 16 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

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CarriesKentucky Pl.
CrossesSulfur Ck
Location9.8S & 2.1E Mud Butte
RouteCounty Highway 0
CountyMeade County
StateSouth Dakota
Coordinates44.86469, -102.83548
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation6: Equal to present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating34.1 US tons
Inventory rating25.6 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckWood or timber
Main spans1
Design loadHS 20
Structure length42 ft (12.7 m)
Longest span39 ft (11.9 m)
Deck width16 ft (4.9 m)
Roadway width16 ft (4.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic30 (2022)
Projected traffic30 by 2042
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 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$10,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Kentucky Pl. over Sulfur Ck built?

It was built in 1925, making it 100 years old in 2025.

What condition is Kentucky Pl. over Sulfur Ck in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in July 2024.

How much traffic does Kentucky Pl. over Sulfur Ck carry?

About 30 vehicles per day (2022 count).

How long is Kentucky Pl. over Sulfur Ck?

The structure is 42 ft (12.7 m) long with a longest span of 39 ft (11.9 m) and a deck 16 ft wide.

Who owns Kentucky Pl. over Sulfur Ck?

It is owned by the County Highway Agency.