Fourth Bore Nearing Completion

Testing for life-safety systems in the Caldecott Tunnel will begin in October preceding the much-anticipated addition of the fourth bore, which is set to open later this year.

Fire safety, communication and traffic operation systems, will all be installed in the first part of October, with testing to follow.

If all goes to plan, the systems will gain certification in early December and will open by the end of the year.

Jet fans and overhead alert systems are noticeable changes to the tunnel. In addition, state-of-the-art fire detection and suppression systems have been installed.

The fourth bore is set to open according to schedule nearly four years after tunneling began.