30 SepCVE Construction Update
The Idaho Transportation Department has updated its Facebook page with a progress report on construction of the first phase of the Central Valley Expressway.
Here’s another recent photo from the ongoing Idaho 16 Boise River Bridge now being built. This photo shows a cofferdam, which allows the crew to work on the bridge in a dry environment. Once the space is established, they pump out the groundwater and drive the piles. You are looking at a pier column where the piles have been driven and cut off to the appropriate elevation. The metal reinforcement bar (rebar) has been tied and is being set up for a concrete placement. The yellow walls on the side are forms for the sides of the footings. They won’t pour the column until they have a form, which will then have to cure for about a week. There are three of these cofferdams required for each pier.
Here’s a recent picture from the Idaho 16 Boise River Bridge now being built. These are a few of the piles that have yet to be driven into the soil – there are 650 piles in all to drive for 10 piers and a pair of abutments.
The markings are in feet. This lets the inspectors know how many feet the pile has gone into the ground.
Construction of the Hwy 44 to U.S. 20/26 phase is anticipated to be complete in 2014.