Quote:
Originally Posted by BorealLynx
I've never seen that link before. It just seems to me, like the case with Hwy 1 in MB through the Whiteshell, that it's always easier to build on existing infrastructure, i.e. twinning the existing route. Forging completely new ground resolves some issues, but often introduces others, especially in the type of Canadian Shield along that route.
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Quote:
Originally Posted by BorealLynx
As for your suggestion re Royal Lake, it's already a really tight squeeze (think Hwy 1 past Barren Lake in MB). The optimal solution would be to work with the First Nations, but I'm not sure the current Provincial government has that in them. I suppose that time will tell, but in the meantime, nothing is happening.
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There are some subtle but major differences between MB-1 and ON-17 in that vicinity, though.
It seems to me that MB-1 is designed for 120 kph but ON-17 for 110 kph. This means difference in geometric designs, such as side slopes (4H:1V or flatter for 120 kph, but only 3H:1V for 110 kph), horizontal curves (550 m to 700 m for 110 kph, 750 m or higher for 120 kph), and vertical curves (for which I can't recall on the spot the parameter values, which account for sight distance and what not).
Consequently, M.T.I. can technically just twin MB-1. On the other hand, MTO will need to construct the new lanes according to 120-kph standard, shift traffic to the new lanes, then reconstruct the existing roadways. In some cases, it may simply be cleaner to build the divided 4 lanes on new alignments.
Now, here's a funny tidbit:
Somewhere between T Bay and Nipigon, to protect a fish habitat, MTO will use 75-m ROW instead of the usual 110 m: The future divided highway will probably feature a 30-m median, 3.75 m per lane x 4 lanes, then 15 m clear zone on both sides. In the case of a northerly alignment around Royal Lake, if FN really is concerned, a case may be made to use a 90-m (or 100-m) ROW instead of 110 m. (I doubt that 75 m or 80 m will suffice given the potential rock cuts and fills.)
Quote:
Originally Posted by BorealLynx
And a northerly route presents issues with access to Kenora proper. Taking the bypass through to Veterans as the main route into town might work, but not for residents of Keewatin and Norman, and that would leave a very circuitous path to link back up to the existing road into town from the west. It would also necessitate twinning the existing bypass all the way to Veterans Drive, which involves two major crossings of the Winnipeg River.
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Quote:
Originally Posted by bomberjet
At the connection point to the Kenora bypass, they could make adjustments and update the highway configuration to have a more direct connection to 17 east of the bypass. They already have a WB left turn for vehicles on the bypass to get to 17 east. It's not really a back track at all.
I may have sked this before, but are there any functional plans on how to twin the existing bypass? Those rock cuts aren't small.
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I doubt that there is, but sufficient ROW may have been preserved right from the start to facilitate future twinning.
Now, Kenora Bypass has its own issues too. A lot of the horizontal curves on the west side are designed with the
old minimum value of R-650 (i.e. turning radius of 650 m). If MTO actually gets to twinning that stretch of Kenora Bypass, realignment (to bring the radius to 750 m or higher) may be needed. There may in turn be substantial property impacts.
As for rock cuts? Yea MTO has been expanding the clear zone here and there.