Quote:
Originally Posted by Kitchissippi
The way I see it, in order for the LRT to go into the median it would probably have to pass under the westbound lanes, so there would likely be a messy construction situation at that point.
|
“under the westbound lanes” – why so?
Currently the east-bound lane of the Transitway flies over the OR174 to the south side. The ramp from the underpass of Blair to that fly-over is about 400 metres; which, at 4% grade, could, potentially, represent an elevation change of 16 metres. That is much more than needed to get the tracks over the west-bound lanes and into the median. Once over the west-bound lanes, the LRT would need about 200 metres to return to grade; so it would ‘land’ roughly beside the overhead sign.
The existing fly-over structure will need to be removed before the OR174 lanes can be pushed apart. This means that the east-bound buses will be in mixed traffic between Blair Station and the bus lane along the OR174. That bus lane might be extended west to become a continuation of the N/S-E ramp. Once that is done, the fly-over can be removed and the highway’s running lanes moved apart; as per my previous suggestion.
Frankly, I think that the City should be using the existing pedestrian overpass of the OR174 to speed east-bound buses by removing the bus’s loop into Blair Station. A new off-ramp could be created from the east-bound lanes, under the pedestrian overpass, up to a new intersection with Blair. I would suggest that this ramp be for all traffic so that the circular off-ramp can be removed. The south side of the interchange would be a ½ ‘diamond’. Something like this:
Buses could stop at a new stop near the pedestrian overpass and then go straight across Blair to get back onto the OR174. Transit passengers would use the pedestrian overpass to cross the OR174 to Blair Station. Also, as an added bonus, the ‘weave’ problem of accelerating cars coming from the east-bound OR174 crossing the decelerating cars going to the west-bound OR174 is removed.