Kraus Development (525-565 Conestogo Road) | 3-35 fl | Proposed

[tomh009]

I do agree here. Mind you, the part under the median could be an open dig with concrete walls and ceiling, for lower cost of that part.

I have no idea what MTO regulations or policies would say about the concrete tunnel being raised above the bottom of the median ditch. Likely some additional work would be required there to avoid a car driving into the median and hitting a concrete wall head-on. But that is admittedly pure speculation.

Generally the bridges just have parapet walls that prevent vehicles from driving off the edge.

I think I was not clear on this. What i mean is that if the (concrete walls of the) tunnel were exposed in the median ditch, that would present a concrete wall perpendicular to the direction of travel, which is, I expect, a greater hazard than an armco barrier (parallel to the direction of travel) on the side of the bridge.

I can't remember an instance of such a construction so I don't know what measures would need to be taken to mitigate a head-on collision risk.