US Bridges

236 ST over West Fork Vermillion Rv

Fair

Miner County, South Dakota · 3S & 1.2E of Howard · Structure no. 000000049172160

Built
1998
27 years old
Condition
Fair
inspected August 2024
Type
Channel Beam
Prestressed Concrete
Length
35 ft
1 main span
Daily traffic
15
2022 count
Owner
County
County Highway Agency

About this bridge

236 ST over West Fork Vermillion Rv is a prestressed concrete channel beam carrying 236 ST over West Fork Vermillion Rv in Miner County, South Dakota. It was built in 1998, so it is 27 years old, younger 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 15 vehicles a day, roughly 2% of them trucks, projected to reach 15 by 2032. The structure is 35 ft (10.7 m) long and 31 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Carries236 ST
CrossesWest Fork Vermillion Rv
Location3S & 1.2E of Howard
RouteCounty Highway 0
Coordinates43.96452, -97.50552
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
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating36 US tons
Inventory rating27 US tons

Structure

Structure typeChannel Beam
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20 + Mod
Structure length35 ft (10.7 m)
Longest span34 ft (10.4 m)
Deck width31 ft (9.4 m)
Roadway width29 ft (8.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic15 (2022)
Projected traffic15 by 2032
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was 236 ST over West Fork Vermillion Rv built?

It was built in 1998, making it 27 years old in 2025.

What condition is 236 ST over West Fork Vermillion Rv 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 August 2024.

How much traffic does 236 ST over West Fork Vermillion Rv carry?

About 15 vehicles per day (2022 count), of which roughly 2% are trucks.

How long is 236 ST over West Fork Vermillion Rv?

The structure is 35 ft (10.7 m) long with a longest span of 34 ft (10.4 m) and a deck 31 ft wide.

Who owns 236 ST over West Fork Vermillion Rv?

It is owned by the County Highway Agency.