First 6 pontoons for Highway 520 bridge in Wash. almost ready

02/7/2012 | Seattle Times, The

The first six concrete pontoons that will support the world's longest floating bridge near Seattle will be ready in April. There will be 21 lengthwise pontoons -- each 360 feet long, 5 feet wide and 28.5 feet tall. Each of them also will have 52 honeycomb-like cells inside that give the pontoon more strength and help add buoyancy.

View Full Article in:

Seattle Times, The

Published in Brief: