[2] The bridge was named after city engineer James Dugald Alexander MacDonald.

Most of these ramp alignments were sited as temporary connectors under the phased construction planning, yet continue to serve in their original state.

If this project had proceeded through to its ultimate stage, three additional spans would have been erected at this location, all south of the existing one.

Upon completion, the entire area at the east end of this bridge would have been occupied by a massive three level cloverstack interchange serving the south and east legs of the downtown loop, the planned 98 ave 6 lane arterial (indicated as "future freeway" on the ultimate stage drawing), and the southeast (Mill Creek) freeway.

The Mill Creek Freeway was to run south following the current 91 Street alignment, ultimately joining Highway 2 in the vicinity of Nisku.