Sunday, February 9, 2014

MnDOT I-494 Maintenance / Upgrade in Plymouth MN

The city of Plymouth is known as home to the only remaining 2 lane stretch of I-494 in the entire metro area.  This creates a 5 mile bottle-neck that runs from Hwy 55 to Fish Lake Rd.  The Plymouth City Council has been fighting to add a third lane for years.  With a lack of state funding and the state continually over-looking this project, it has made it difficult to make this happen.  MnDOT and the Metropolitan Council have also shifted their focus in recent years from general purpose lanes to managing traffic long-term through the use or MnPASS lanes that are open to car pools, buses and toll payers.  
While planning the maintenance of the I-494 corridor, MnDOT engineers decided on the idea of a dynamic shoulder, a wider shoulder that would be open to traffic during peak periods.  Overhead signs will show green arrows when the shoulder is available for use and red arrows when it is closed.  The times discussed have been souothbound being open from 6-9am and northbound will be open from 2:30-6:30 with MnDOT having the ability to open it when traffic dictates.  
The project will run from July 2014 through November 2016 with a total cost of $68.6 million.  Below is a summary of the scheduled work : 

Summary of work

  • Repair and reconstruct the concrete pavement on I-494 between I-394 and the I-94/494/694 interchange (Fish Lake Interchange).
  • Maintenance repairs on bridges and ramps spanning I-494
    • Bridges to and from I-94 and I-694
    • East Fish Lake Road
      Bass Lake Road
    • County Road 47
    • Canadian Pacific Railway
    • Schmidt lake Road
    • Rockford Road
    • Highway 55
    • County Road 6
    • Carlson Parkway
    • Cheshire lane
  • Widen the right shoulders between Hwy 55 and East Fish Lake Road to facilitate a right-side dynamic shoulder.
  • Construct storm water ponds and noise barriers.

 Project schedule

  • August 2013: Geometric layout
  • January 2014: Environmental documentation
  • February 2014: Final plans and specifications
  • June 2014: Project letting
  • July 2014 - November 2016: Project construction

Cost

  • $68.3 million

Average daily traffic

  • 95,000 vehicles (2005)
  • 132,800 vehicles (2030 estimate if project occurs)
Source : http://www.dot.state.mn.us/metro/projects/i494plymouth/

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