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ND FTNP THRO 11(10) South Unit Scenic Loop Slide Repair

PROJECT DETAILS:

This project will consist of roadway reconstruction of 6 miles of the South Unit Scenic Loop Road within Theodore Roosevelt National Park, North Dakota. The project includes construction of soldier pile walls at several locations within the 6 miles of roadway to stabilize areas that have failed or currently failing due to poor subgrade conditions. The project also includes lime stabilization of subgrade at multiple locations. The project includes replacement of all existing culverts, drop inlets, and concrete curb and gutter. The project includes paving the entire length with several pullouts and parking areas that include concrete curb and gutter and sidewalk. South Unit Scenic Loop Road is open year road with some snowfall occurring in the winter. The project section of the Loop Road is currently closed to all traffic and will be closed to traffic during construction.

All the work is occurring in cultural and natural resource sensitive areas and there are numerous environmental constraints that will affect the construction schedule and type of operations. Great attention to detail will be required in achieving customer satisfaction in areas of road construction and timely completion of work.

The estimated price range is between $40,000,000 and $50,000,000.

Significant Value Items:

• Soldier pile walls


• Ground anchors


• Sculptured shotcrete


• Roadway excavation/Select borrow/Waste


• Subgrade lime stabilization


• Pipe culverts/Drop inlets


• Concrete curb and gutter and sidewalk


• Aggregate base


• Asphalt concrete pavement

This is solicited as full and open competition.