The choice of alternatives in the replacement of the Lion's Gate Bridge.

摘要

For sixty years the Lion's Gate Bridge has served as an important transportation link between Vancouver and its North Shore suburbs. A 1995 bridge structural study predicted the bridge would be safe until 1999, but beyond that date it must be replaced or rehabilitated. To address the bridge's structural problems the province entertained bids and proposals from which a list of possible replacement options emerged. For this study, eight alternatives were whittled down from twenty-one proposals and were selected for evaluation. These include: (1) repair and maintain the bridge (do-nothing option), (2) rehabilitate and widen the bridge with three wider lanes, (3) modify the bridge to four lanes, (4) a new four-lane bridge, (5) a new five or six-lane bridge, (6) a four-lane bored tunnel, (7) a Brockton Point tunnel, and (8) a mid-harbour tunnel (as a third crossing).;The purpose of this study is to evaluate the choice of alternatives to replace the Lion's Gate Bridge and to determine which option is perceived by several public and private respondent groups to be the most favoured to deal with the bridge problem. (Abstract shortened by UMI.).