In preparation, the Vaughn Avenue Basin, about one third of a mile west of Gilbert Road, was closed May 25. It will remain closed through the end of construction, which is scheduled to be complete in February 2021.
The trail will remain open, and improvements to it for one eighth of a mile on either side of the bridge are set to be included in the project.
Union Pacific Railroad and the Arizona Department of Transportation are joining with the town on the project. Gilbert is contributing $1.33 million in funds from its Capital Improvement Projects and General funds.
A Congestion Mitigation and Air Quality grant of nearly $2.83 million from the Federal Highway Administration also will be applied to the project.