Here is the drainage report for the area around the underpass:
http://www.winnipeg.ca/finance/finda...age_Report.pdf
From what I can see from the site maps near the end of the report, none (or little) of Al Golden's land will be required for the intersection.
Of course these are preliminary designs and are subject to change by Russ Watt and co at Silly Hall.
Here is the Executive Version of the above report.
http://www.winnipeg.ca/finance/finda...e_Proposal.pdf