The first segment of the northwest tower (also on the Kittery side) will be placed this afternoon, and two more segments are planned for the coming days.
You'll notice in the photos below that the segment is hovering over the top surface of the pier. There is a 30" section that will be cast in place.
You may also notice a diagonal line on the side of the segment. This is stain that has been applied, and will be part of a large arc design when all of the segments have been stacked.
Across the channel, the post-tensioning ducts are being placed in the Portsmouth tower pier tub prior to filling it with concrete. These ducts are explained in the previous blog entry.
In other Portsmouth side news, the railroad deck is proceeding very rapidly. Below you can see the rail line to Newington in the foreground. A switch will be installed near the right edge of the photo to connect to the new bridge. The roadway will join the bridge from the left of the photo. The first shared pier (road + rail) is behind the black crane boom.
The construction of the rail deck is apparent in the photo below. Precast segments are arranged horizontally, and post-tensioned (held together with horizontal rods under tension).
Progress on the rail deck has proceeded very quickly, but is now on hold while the second shared pier is completed. This can be seen below with the concrete forms still in place.
Finally, a little tribute to the old bridge. She carried her last train on December 9, 2015 and her last car on August 21, 2016. I will be adding a lot more historical content to the blog in the coming months.