Quote:
Originally Posted by aberdeen5698
Yeah, people seem to keep forgetting this issue. To get to the elevation of the car bridge deck you'd literally need miles of elevated approach for the rail line, which would mean a massive increase in cost.
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There is nothing specal about car bridges that make them require higher elevation. It is the water traffic under the bridge that necessitates that, and that would be the same for both trains and cars.
Quote:
Originally Posted by Alex Mackinnon
Just do a lift span under the road deck. It has been proposed before for this crossing. As long as the span is double tracked and has higher speed limit it will be a huge improvement.
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One of the factors that limits the speed on the bridge is the fact that it is a swing bridge. Changing it to a lift bridge won't help all that much. If we want trains to travel across it at a reasonable speed, a change in elevation is necessary.
One option would be to keep the existing bridge for freight traffic, as it definitely can't handle steep grades, and only have track for passenger trains on the new bridge, as they aren't as heavy and can handle steeper grades. Optimally it would be combined with a new approach into the station
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