Quote:
Originally Posted by Klazu
If there would be a be a paraller bridge connecting to Cambie Street, I think the current 2+2 Oak Street Bridge would be okay for long time to go. Adding more lanes on the bridge will only move the problem onwards to Oak Street, which cannot be widened. That's why more of the arterial streets should have their own bridge connection.
Knight Street bridge should definitely be 3+3 lanes (if not even 4+4 to help merging and public transit). It is actually quite wide bridge structure and perhaps could be widened without too much extra work / cost?
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Oak street is 3+3 lanes the whole way. Another lane's worth of traffic gets off the Oak street bridge onto Marine. A 4+4 lane Oak Street bridge would be good as it wouldn't add to the volume on Oak (as the flow is controlled by the light at 70th). But it would make the Queue not stretch into Richmond to the 91 interchange at peak hours.
In the PM peak it is worse. The back up SB stretches to 57th most days on Oak. That is because you have 3 lanes on Oak, and 2 lanes EB and 2 lanes WB from 70th, 7 lanes of traffic, trying to get on the bridge.
Also, a new bridge could interface with Marine better. If a new bridge were built so that traffic could go FROM Marine ONTO the Bridge, then you could dramatically shorten the light at 70th and improve the flow of traffic in the whole Marpole area.
You could double the capacity of the bridge without adding any lanes in Vancouver (in fact you could take some away from 70th) and get improved flow in the city.
Even if you were to do the absolute least, and make the bridge 6 lanes and make no other changes to any other roads, traffic in Vancouver would be so much better.
But what I would do to further improve traffic on the Oak Street bridge is build a new bridge at either Main or Fraser and connect to Shell or No 5 Road (or both). It would spread out the city to city traffic between Richmond and Vancouver, keeping short trips off the freeway and making the cities feel more connected. It is kind of insane to think there are only 12 lanes connecting 2 large cities.