Date: 12/22/2010 Views: 3173
Date: 03/30/2014 Views: 7700
Date: 06/19/2009 Views: 3289
Date: 08/23/2023 Views: 216219
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.