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.

Construction of the Boise River Bridge
Courtesy ITD

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.