Interprovincial bridge crossing discussion

[CanadaGoose]

I am no traffic engineer.

I assume a lot of traffic on King Edward bridge goes towards the east end of Gatineau A-50, and very little goes up A-5 (disclosure: this is where I commute from).

From Montee Paiement A-50 interchange to Parliament Hill would be 14.4km (A-50 Montee Paiement, King Edward Bridge, Sussex, Wellington, etc).

With new bridge, I assume:
- 4km from Montee Paiement A-50 to Saint Louis (bridge start)
- 3km approx bridge length using google maps measure tool
Via:
- Sussex Drive to Parliament (that's no good) - 8.1km
- Aviation Parkway / 417 / Nicholas Drive - 10.6km

Proposed travel pattern via new bridge: 15.1km to 17.6km (versus 14.4km existing)

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I can only guess that majority of king Edward traffic would use this new crossing as a secondary alternative, if the primary is congested.

But with the city, not really putting any effort on finishing Vanier Parkway, and proposing a tunnel that would cost more than a bridge (that could handle maybe 2-3 times the traffic), handle one lane of traffic and has many complexities. What choice does the Feds have?