Western Avenue Traffic Update for The Week of February 16, 2026

Caltrans has approved extended traffic control hours from 6:00 AM to 6:00 PM Monday through Friday, with drilling work to start at 7:00AM beginning Tuesday, February 17th.  Drilling contractors on Western Avenue have planned four bore holes that need to be completed to install a system of sonar devices that will be lowered underground to produce a clear 3D image of the area at depth (approximately 320 feet below street level). This imaging will allow contractors to determine the best way to fill the space above where the tunnel breach occurred. Drilling has been difficult due to underground conditions and limited working hours. These extended working hours will allow drilling, sonar mapping and, if needed, slurry pumping to fill this space quicker and more efficiently.  However, work is expected to continue through March 2026.  Drilling will use two separate drilling rigs previously deployed to the area using the same traffic control during these new extended working times.  This is anticipated to help drilling work achieve the project’s objectives more efficiently.