Quote:
Twinning that section of Highway 1 would be easy if the government would just look at the simple solution and not some over the top solution.
Widen the existing roadway to 4 lanes and provide acceleration lanes and deacceleration lanes.
Provide adequate shoulders.
Provide adequate barriers from driving into rock faces or off a cliff.
Pour a solid concrete divider down the entire 17 kms stretch exactly like they did between Grant and Portage Avenue on the west perimeter.
|
I’m using MTO standard here but it may still be food for thought.
For divided 4 lanes with 22.5 m median, the width of the cross section is ~63 m.
For divided 4 lanes with a median barrier, the width of the cross section is ~45 m.
While 18 m may look like a huge difference, and while the terrain around Falcon Lake looks formidable, M.I.T. won’t be blasting significantly more rock by using a 22.5 m median, so the cost-saving there is insignificant. This is Canadian Shield, not the Rockies, after all.
Moreover, if we have to use a median barrier, for proper drainage, we will have to install sub-drains (i.e. manholes in the left shoulder).
Installing that will further reduce the said cost-saving. Plus, median barriers are technically speaking obstacles in themselves.
There’s a reason that the divided 4 lanes of TCH east of Thunder Bay have wide median instead of median barriers.
All said, I agree that the Welcome to Ontario part should be RIRO (right-in right-out) only.
Edit: See
https://skyscraperpage.com/forum/sho...234240&page=10 #194. I think @sonysnob is a geotechnical engineer.
Ps: I didn’t know that closed account could be a thing.