US Bridges

Northwestern Ave over Bad Rv

Fair

Haakon County, South Dakota · 0.9 E & 0.2 S Midlnd · Structure no. 000000028439472

Built
1970
55 years old
Condition
Fair
inspected September 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
224 ft
3 main spans
Daily traffic
60
2022 count
Owner
County
County Highway Agency

About this bridge

Northwestern Ave over Bad Rv is a steel stringer/multi-beam or girder carrying Northwestern Ave over Bad Rv in Haakon County, South Dakota. It was built in 1970, so it is 55 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 60 vehicles a day, roughly 2% of them trucks, projected to reach 60 by 2032. The structure is 224 ft (68.3 m) long and 30 ft wide. If it were closed, the detour would be 16.2 mi (26 km).

Location

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CarriesNorthwestern Ave
CrossesBad Rv
Location0.9 E & 0.2 S Midlnd
RouteCounty Highway 0
CountyHaakon County
StateSouth Dakota
Coordinates44.0673, -101.1288
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating60.1 US tons
Inventory rating36 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length224 ft (68.3 m)
Longest span84 ft (25.6 m)
Deck width30 ft (9.2 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic60 (2022)
Projected traffic60 by 2032
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed16.2 mi (26 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$5,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Northwestern Ave over Bad Rv built?

It was built in 1970, making it 55 years old in 2025.

What condition is Northwestern Ave over Bad 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 September 2024.

How much traffic does Northwestern Ave over Bad Rv carry?

About 60 vehicles per day (2022 count), of which roughly 2% are trucks.

How long is Northwestern Ave over Bad Rv?

The structure is 224 ft (68.3 m) long with a longest span of 84 ft (25.6 m) and a deck 30 ft wide.

Who owns Northwestern Ave over Bad Rv?

It is owned by the County Highway Agency.