 Option F1 is a high-level cable
stayed bridge/low-level bridge option that would start at Tongass
Avenue just north of the cemetery, rise along the hillside behind
the cemetery and the U.S. Coast Guard Base, and then turn westward
and cross over Tongass Avenue and the east channel of Tongass
Narrows to Pennock Island. This option would cross Pennock Island
at grade and then use a second, low-level bridge to extend over
the west channel of Tongass Narrows. The east channel bridge
would be sized to allow cruise ship passage and the west channel
bridge would be sized to allow passage of Columbia class
vessels. The east channel and west channel bridges would be 1.8
and 0.5 miles long, respectively. |