With traffic shifted to the north, backfill material has been placed along the south side of President Street in association with the surcharge process. In addition to this backfill material, a one foot sand layer is beginning to be placed along the President Street backfill material. This distinct sand layer is placed prior to the installation of wick drains. Once wick drains are installed, an additional one foot of sand will be placed. Once the two feet of sand layer is established, this will be the approximate future President Street roadway subgrade elevation. From that elevation, an additional five to eight feet of backfill material (surcharge material) will be placed to provide the weight necessary for predicted consolidation settlement to occur.
AT&T is working to remove/relocate their communication lines along General McIntosh. Once these lines are removed or relocated, undercutting, placement of backfill, and sand layer will begin along portions of the new General McIntosh Boulevard.
Grading of the new Congress Street and General McIntosh Boulevard intersection began this week. Crews are preparing for the layout of curb and gutter along new Congress Street.
Over the past week, various new water mains along the General McIntosh corridor were pressure tested, flushed and chlorinated. Final connections of these mains will occur during the upcoming week. Connection of these new water mains will take flows off aging water mains, and remove these lines from areas of General McIntosh requiring additional excavation, undercutting, and backfill.
Jack and bore of steel casings underneath the railroad tracks and future Bilbo Canal, just south of President Street and west of Truman Parkway continues. Two steel casings have been pushed to the south side of President Street for future water main and AGL gas main connections. Three additional steel casing still require boring under the future Bilbo Canal and CSX railroad.
Construction of the Bilbo Canal and President Street bridge over the future canal continues. Crews have driven steel H-piles required for a section of future Bilbo Canal western wall. Currently a concrete footer that will set on top of these piles is being formed and rebar tied. An initial concrete pour will establish the footer of the wall, while a second pour will establish the concrete wall itself. Once this section of wall is complete, the crew will begin another section of canal wall.