US Bridges

Marty RD over North Fork Moreau Rv

FairPosted for load

Harding County, South Dakota · 19.6E 1.0S of Redig · Structure no. 000000032446480

Built
1986
39 years old
Condition
Fair
inspected April 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
79 ft
1 main span
Daily traffic
31
2022 count
Owner
County
County Highway Agency

About this bridge

Marty RD over North Fork Moreau Rv is a steel stringer/multi-beam or girder carrying Marty RD over North Fork Moreau Rv in Harding County, South Dakota. It was built in 1986, so it is 39 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 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for load restriction.

It carries about 31 vehicles a day, roughly 2% of them trucks, projected to reach 31 by 2032. The structure is 79 ft (24.1 m) long and 20 ft wide. If it were closed, the detour would be 14.3 mi (23 km).

Location

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CarriesMarty RD
CrossesNorth Fork Moreau Rv
Location19.6E 1.0S of Redig
RouteCounty Highway 0
CountyHarding County
StateSouth Dakota
Coordinates45.25616, -103.15133
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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionApril 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 adequacy8: Equal to present desirable criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating20.2 US tons
Inventory rating15.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckWood or timber
Main spans1
Design loadHS 20
Structure length79 ft (24.1 m)
Longest span79 ft (24.1 m)
Deck width20 ft (6.1 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic31 (2022)
Projected traffic31 by 2032
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed14.3 mi (23 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$30,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Marty RD over North Fork Moreau Rv built?

It was built in 1986, making it 39 years old in 2025.

What condition is Marty RD over North Fork Moreau 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 April 2024.

How much traffic does Marty RD over North Fork Moreau Rv carry?

About 31 vehicles per day (2022 count), of which roughly 2% are trucks.

How long is Marty RD over North Fork Moreau Rv?

The structure is 79 ft (24.1 m) long with a longest span of 79 ft (24.1 m) and a deck 20 ft wide.

Who owns Marty RD over North Fork Moreau Rv?

It is owned by the County Highway Agency.