US Army Corps Report – Phase 1 Construction Activities Next 90 Days – April 2014

image2Muddy River Flood Risk Management & Environmental Restoration Project
Phase 1 Construction Activities Next 90 Days
April 2014

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.

April 2014 through June 2014 Period:

  • image1On 29 March 2014, we performed another traffic shift to change both vehicular and pedestrian traffic to continue installation of the arch culvert underneath Brookline Ave. This traffic shift maintained Brookline Avenue, between the Riverway Connector and Park Drive, as one-way only inbound traffic and shifted the four inbound lanes to the left. Traffic flow remained in the same traffic pattern from last traffic change in September 2013. As part of the vehicular traffic shift, a new pedestrian walkway was constructed on the left side of the Brookline Avenue adjacent to the former Sears parking lot for pedestrian travel through the project area. The current traffic pattern in place can be seen in the figure shown below.
  • Since the shift on the 29th, the contractor has been preparing the work area between Brookline Avenue and the Jug Handle to begin sheet pile cofferdam installation. Once the sheet pile cofferdam is in place, they will excavate within the sheeting to get to proper grades and then begin installation of the drilled shafts for the remainder of the Brookline Avenue precast culvert sections. We expect the drilled shafts to begin at the end of the month.
  • In addition, as part of this phase of work, the contractor will also start construction of a diversion structure that will be used to divert storm water flow from two large existing storm drains into the Brookline Avenue culvert . These storm drains currently run down Brookline Avenue and eventually empty into the Charles River. However, they will not fit over the culverts that are being installed without major roadway modifications. The diversion structure will allow storm water flow to empty into the new Brookline Ave culvert.
  • At the end of this notice we have included some pictures that show the site preparation to begin sheet pile cofferdam installation in the Jug Handle work area and the relocated 48” water line with valve chamber located in the Sears Parking Lot work area. We thought folks would be interested in seeing the work occurring behind the fence.
  • If you any questions, require additional information or would like to be added to the Project Contact List, please email the project mailbox at MuddyRiver@usace.army.mil

Traffic Patterns

Project Phase 1

(U.S. Army Corps of Engineers photos)

Muddy River rises March 14, 2010

(U.S. Army Corps of Engineers photos)