Britannia now has bike lanes all the way from 8th Line to Tremaine. (Unfortunately the traffic engineers didn't continue the bike lanes to 9th Line but the car lanes are pretty wide for that short stretch).
Riders starting from Churchill Meadows or Lisgar might want to work their way north or south respectively, to Britannia and use it as an alternate to Louis St. Laurent when heading to Waterdown, Carlisle and other points West.