Title:
Design of the Third Lake Washington Floating Bridge
Author(s):
Myint M. Lwin
Publication:
Concrete International
Volume:
11
Issue:
2
Appears on pages(s):
50-53
Keywords:
floating bridges; mix proportioning; prestressed concrete; reinforced concrete; specifications; structural design; Design
DOI:
Date:
2/1/1989
Abstract:
Design of the 5800 ft (1800 m) long Third Lake Washington Floating Bridge consisting of concrete pontoons held in position by anchor cables is described. It carries five lanes of traffic and one sidewalk for pedestrians and bicycles. In addition to the usual design loadings such as dead load, live load, wind load, temperature, and shrinkage, a floating bridge has to be designed for forces due to wind-generated waves, lake level changes, and flooding due to damage caused by collision by a boat, loss of anchor line, and other unforeseen accidents.