Work on the tunnel launch site is about to start near the University of Ottawa. The Transitway is being diverted around the site later this month.
http://www.octranspo1.com/routes/transitway_realignment_at_laurier
There's also a second tunnel launch site just east of LeBreton station, in the vacant lot on the north side of Albert. From what I understand the tunnel will be started from both sides, with an 'extraction site' in the parking lot on the SE corner of Kent and Queen.
I take the bus right past the western launch site every day, and the extraction site is in the parking lot kiddy corner to my building, so I'll have a good view of the site (I look at it every day).
They've also started work on the 417 widening between Mann and the split. Right now, it's creating a pinch point westbound from the 174 onto the 417, so a lot of Orleans commuters aren't very happy.
The Citizen had a great article a couple weeks ago showing all the construction phases for the project, and their impact on traffic: http://www.ottawacitizen.com/Roadwo...ions+staggered+over+summer/8416210/story.html