Here's a potential bonkers option that touches on two goals of this Forum: removal/reuse of the 4th street viaduct and a more urban, sane Blue Line Extension route. Using the stub at the Interchange, an elevated Blue Line curves north and uses the Metro Transit Heywood Garage Bus exit toward 6th Ave to cut through Metro Transit land (highlighted in Yellow) towards the 4th street viaduct. This can be done either by pairs of columns along this route (like the 'EL' in Chicago), or by continuous concrete walls until it switches to single columns at the parking lot next to Inbound Brewing. Because this is Metro Transit land, ROW would not have to be obtained until it hits the parking lot across 5th Street from Inbound. At that point, the routing would join up with a partially removed (from 2nd Ave to the LRT connection point) 4th Street viaduct. The viaduct would carry the LRT across 94 and Plymouth Ave. The removal of the northbound viaduct would free up land around 10th Ave for a new West North Loop Station (elevated), as well as other land uses. The one thing that would be challenging would be the connection to Broadway after crossing 94/rerouting the 94 ramps to 7th, but for this purpose I'm going to handwave that geometric problem away for someone else to solve. Once it gets to Broadway, it follows that avenue via at-grade center street routing (like the Green Line on University) to at least North Memorial, and on to wherever the best route beyond take it (again, somebody else figure out where this should go that isn't a cornfield.)
Please let me know what you think, or if I've overlooked a building under construction that would impede this plan, as I am going off Street View and satellite imagery.[attachment=0]Blue Line Alternate Route-min.jpeg[/attachment
TLDR: Use mostly Metro Transit ROW to carry an elevated Blue Line to the 4th Street viaduct, over 94/Plymouth Ave, turn west onto Broadway, and run the train at grade to North Memorial at least.
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