Date: 11/25/2009 Views: 4287
Date: 12/31/1969 Views: 5731
Date: 10/30/2007 Views: 5196
Date: 08/23/2023 Views: 209810
The area where the tie bar passes through a depression in the tunnel has to be prepared for closure. The tunnel depression with the areas of fiberglass and foam core removed in preparation for closure.