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US Army Corps Report – Phase 1 Construction Activities Next 90 Days – February 2015

US Army Corps Report – Muddy River Flood Risk Management & Environmental Restoration Project Phase 1 Construction Activities Next 90 Days

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General: General: The Muddy River Flood Risk Management & Environmental Restoration Phase 1 Construction Project is located in the footprint generally between the Riverway downstream to Avenue Louis Pasteur. The major project components involve the installation of a 10-foot by 24-foot box culvert under the Riverway roadway, the installation of 10-foot by 24-foot box culvert under the Brookline Avenue roadway, daylighting of the area between the Riverway and Brookline Avenue, and daylighting of the area between Brookline Avenue and Avenue Louis Pasteur. Daylighting is the removal of existing twin 72″ culverts and excavation of the area to return the waterway to a natural state. This Notice is intended to identify the general construction activities that will be performed in the next 90 days. A figure that shows the existing conditions and the proposed improvements is at the end of this report.

December 2014 through February 2015 Period:

  • In order to complete work on the Brookline Avenue Culvert, a traffic shift was performed on December 13, 2014. This traffic shift maintained Brookline Avenue, between the Riverway Connector and Park Drive, as one-way only inbound traffic but shifted the four inbound lanes to the right. The current traffic pattern can be seen in the figure shown below.
  • In the Brookline Avenue area, the projected work for the next couple of months is the relocation of the utilities, BY OTHERS, permanently back into Brookline Avenue. Once these relocations are complete, the construction of the Brookline Avenue roadway and permanent island (separating inbound and outbound traffic) will take place, in anticipation of opening Brookline Avenue back to two-way traffic, between Riverway Connector and Park Drive, in early Spring 2015.
  • In the Riverway Culvert work area, the contractor installed all the steel pipe piles by end of December. Over the last several weeks, they have been backfilling to grade for the pile caps and the invert slab; tying rebar for the wingwalls; and placing concrete for the pile caps. Current schedule for the installation of the precast concrete culverts is end of February 2015.
  • A concurrent activity to the Brookline Avenue and Riverway work areas that started in January 2015 is the Muddy River diversion at the Upper Fens Pond area. Preliminary site layout and preparation work at the Jug Handle has taken place. Over the next month, we will be installing a combination steel sheeting cofferdam and pumping system in order to divert the flow of the Muddy River from the Jug Handle work area past the Avenue Louis Pasteur. After significant dewatering efforts, this will allow us to excavate and properly dispose of the sediment in the channel bottom of the Upper Fens Pond to construct the flood control channel; restore and protect the banks of the Upper Fens Pond; and daylight the river in the area just upstream of and construct an extension to the existing culvert beneath Avenue Louis Pasteur. The diversion and construction activities in this phase of work are expected to take six to eight months.
  • At the end of this notice we have included some pictures that show the construction progress since we completed the Brookline Avenue Culvert and started the Riverway Culvert. We thought folks would be interested in seeing the work occurring behind the fence.
  • If you have any questions, require additional information or would like to be added to the Project Contact List, please email the projectmailbox at MuddyRiver@usace.army.mil

Traffic Patterns and Project Photos

Project Phase 1

(U.S. Army Corps of Engineers photos)

Muddy River rises March 14, 2010

(U.S. Army Corps of Engineers photos)