The Angus L. Macdonald Bridge, known locally as the Macdonald Bridge or the "old bridge", was opened on April 2, 1955. The bridge was designed by Phillip Pratley, a bridge designer also responsible for the Lions Gate Bridge in Vancouver. The Macdonald Bridge often suffered from traffic problems due to its narrow () width, so a lane addition project was completed in 1999, relocating the pedestrian and bicycle outboard of the main cables. From 2015–2017, the bridge structure suspended below the main cables was completely replaced, including the floor beams, stiffening trusses, road deck and suspender ropes. The only original components are the main cable, the two towers, the anchor piers and cable bents. It is only the second time ever that the suspended spans of a bridge have been replaced while being open for traffic during the day; the first being the similar Lions Gate Bridge in Vancouver.