I have talked to the project engineer in charge of the Disraeli reconstruction a few times. In a nutshell, a three lane bridge is of no use due to restriction of traffic at the Elmwood end.
Just like electricians, plumbers or aircraft mechanics, traffic engineers have a set of codes and practices that they have to work in accordance with. Standards are set by national or international organizations through discussion and agreement and these standards are used to develop a set of codes that engineers must adhere to. In this case, a three lane, limited access roadway funnelling into a three lane artery through a residential area is a no-go and would not be considered unless further widening of Henderson up to Johnson or even Munroe is completed. (This is not an option as it would eliminate all of “downtown Elmwood”.)
The reason lies in the difference between a limited access roadway and a residential artery. A limited access roadway is all flowing traffic, where the artery has left and right turns, uncontrolled cross traffic, pedestrian crossings, storefronts and the like. Merging three lanes of the former into three lanes of the latter is something an engineer wouldn’t consider, much like you wouldn’t consider making toast in the bathtub.
As it is now the two lanes entering Elmwood are never congested, all the congestion occurs after the road turns to three lanes.
The closure of the Disraeli will be horrible, worse than the closure of the Redwood was. We will all have to find a way to deal with the difficulty. I’m going to ride my bike a whole bunch more.