Rapid Redecking

by Randy Pickle, P.E., (M.ASCE), Proj. Engr.; Totten Sims Hubicki Assoc. Ltd., Whitby, ON, Canada,


Serial Information: Civil Engineering—ASCE, 1998, Vol. 68, Issue 4, Pg. 65-68


Document Type: Feature article

Abstract:

A contractor replaced nearly 7,000 m� of steel grid roadway deck filled with microsilica concrete on the Canadian crossing of the Thousand Islands bridge system more than one year ahead of the contracted completion date and more than a month ahead of the contractor's own schedule. Construction was complicated by requirements that bridge traffic be unimpeded during the daytime and that only one lane be closed at night. Conditions varied depending on the span: suspension, Warren truss, arch or viaduct. Work platform sections necessary for stringer replacement on two of the spans were pulled underneath the spans by tugboat, where they were hoisted from the St. Lawrence River and into place. Portal frame gantries for deck section removal and replacement and day and night crews helped the contractor finish the job quickly.

Subject Headings: Night time construction | Contracts and subcontracts | Steel bridges | Infrastructure construction | Bridge decks | Viaducts | Trusses

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