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Top IDOT & MDOT Projects of 2009-10

Here is a list of ongoing or recently completed projects from the Idaho Dept. of Transportation and Montana Dept. of Transportation.

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11. Interstate 84, Burley to Declo & Declo to SLIC

Minidoka & Cassia counties, Idaho
Start: April 2010 Finish: Oct. 2010
Contractors: Knife River Corp. and Ralph L.
Wadsworth Construction
Cost: $22.1 million (two projects)

Projects include cold milling of I-84 from milepost 207 to 222. Burley to Declo section reconstructed by CRABS and asphalt pavement overlay and repair of Heyburn overpass structure. Declo to the Salt Lake Interchange/I-86 junction, section is inlay concrete pavement and bridge repair at Southside Canal and Newcomb grade separation

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12. Slope Flattening/Widening & Erosion Protection

Gallatin Canyon, Mont.
Start: June 2008 Finish: Summer 2010
Contractor: Copp Construction LLC
Cost: $14.8 million

This project consists of grade, gravel surfacing, plant mix bituminous surfacing, seal and cover, pavement pulverization, blasting, guardrail improvements, electrical improvements, new bridge structures, drainage improvements, riprap, significant traveler awareness efforts and other miscellaneous improvements to Gallatin Canyon section of U.S. 191

13. I-84, Vista Avenue Interchange

Boise, Idaho
Start: July 2009 Finish: Sept. 2010
Contractor: Central Paving Co.
Cost: $17.8 million (ARRA-funded project)

This project will rebuild the Vista Interchange (the bridge was built in 1969) with a single-point urban design, which places a traffic light at the center and allows for protected left turns in each direction. This will add traffic capacity and accommodate future lanes on I-84.

14. Absarokee North and South

Absarokee, Mont.
Start: Nov. 2009 Finish: Fall 2010
Contractor: Riverside Contracting Inc.
Cost: $12.9 million

This project consists of grading, cement treated base, gravel, plant mix surfacing, drainage, fencing, irrigation relocation, structures and other necessary work on the Absarokee - N & S project in Stillwater County.

15. I-84, Orchard Street Interchange

Start: April 2009 Finish: Spring 2010
Contractor: McAlvain Construction Inc.
Cost: $15.1 million

This project will rebuild the Orchard Interchange with a partial diamond interchange design. The existing interchange (the bridge was built in 1969) will be replaced with a new one positioned slightly to the west, with realigned, widened and extended on- and off-ramps. This project also includes improvements to the intersection of Victory Road, Wright Street and Orchard Street. Five lanes of traffic will be maintained across the bridge during the reconstruction.

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