Metrolinx will be installing struts across the tunnel between John and Church. The construction will be done overnight and may take as long as two weeks, starting March 24. They promise that there
will be minimal noise during the strut installation. The steel beams will come in on one or two truckloads and then be lifted off the trucks into the pre-formed pockets in the tunnel wall. During the daytime construction hours, the struts will then be concreted in place.