Directions:

"1" = Interstate 15 joints 20 (from the north) and 10 (from the east), and all proceed westward towards Montreal - N45 27.99 W73 29.63.
"2" = After 4 km, and after crossing Pont Champlain, interstate 10 proceeds northward -
McGill University is 6 km further northwest - N45 28.25 W73 32.51.