In a previous post on the downtown Ottawa transit tunnel (DOTT) I mentioned a presentation I saw at Transit Committee on Dec 16th comparing the surface and tunnel options.

The Committee has provided me with a copy of the powerpoint presentation by the Downtown Coalition. Here are the key slides, including the $100 million dollar saving figure. This figure might mean the tunnel saves $100m over a surface rail option, or that the tunnel saves $100m over the current BRT operation, its unclear to me. Their conclusion however remains that the tunnel has a reasonably quick payback period. Double click pictures to enlarge.