second time that a suspension bridge had its suspended spans completely replaced while continuing to allow regular traffic flow during the daytime. Principal engineering work for the project was done by the same firm that managed the work on the Lion's Gate Bridge. During the Big Lift project Halifax Transit continued to run its regularly scheduled conventional bus service across the Macdonald bridge, except during times when the bridge was closed. During scheduled closures, Halifax Transit operated a shuttle service using the MacKay Bridge. Halifax Harbour Bridges also operated a free, 24-hour-a-day shuttle service during construction to accommodate the bridge's pedestrian and bicycle users. It operated on a load-and-go basis during the weekday morning and afternoon rush hours, and on a 30-minute schedule at all other times of the day and overnight. See also A. Murray MacKay Bridge – A newer suspension bridge crossing Halifax Harbour. Halifax Harbour Bridges List of bridges in Canada Notes Further reading External links Halifax-Dartmouth Bridge Commission information Cherubini Group construction photos including deck fabrication and replacement MacPass Bridge Mile Running Race Road bridges in Nova Scotia Buildings and structures in Halifax, Nova Scotia Transport in Halifax, Nova Scotia Suspension bridges in Canada Bridges completed in 1955 Toll bridges in Canada Roads with a reversible lane Bike paths in Nova Scotia 1955 establishments in Nova Scotia