Expressway removals

[Markster]

The 417 in Ottawa quite effectively cuts Centretown off from the Glebe.

In the 417's defence, Centretown being cut off from the Glebe predates the expressway. The 417 replaced the freight rail bypass, and even added more crossings.

The 417 is what I would consider an excellent example of a bad place to consider removing an urban expressway.
1) It provides connectivity to the region. Driving from Nepean to Orleans would be made excessively more difficult without it. Nevermind the person who just wants to drive from Arnprior to Montreal, without learning the surface streets of Ottawa.
2) It doesn't overly constrain any population centres. Sure it forms a mental dividing line, but there is opportunity for urbanity both north and south of it. Even then, it is largely permeable, with crossings at every block (save for Lyon) between Bronson and the canal.
3) It doesn't ruin or cut off any major parkland areas. Unlike, say, the Ottawa River Parkway, or Nicolas St.