I understand that the subway followed the Nordheimer Ravine and therefore curved southeast, but I don't see why there isn't room underground to the west for a subway line and underground expressway. London's underground is proof that if you dig deep enough, there are no underground obstacles. If what we're seeking is a parallel north-south subway line west of the Yonge-University-Spadina Line, it will need to be tunneled. My suggestion is simply to piggyback it on tunneling for an underground expressway. I think we'd all agree that building a Spadina Expressway down the middle of a ravine would be disastrous, let alone down the middle of Spadina at grade, but no one is calling for that kind of infrastructure. What we need is a DRL to the west, and since the Allen is nothing more than a stub, why not tunnel it? I realize this should probably be on another thread, but the project could dovetail with Olympic plans and/or plans for a revamped Gardner. Tunnel under existing roads and parks, such as Winnett, followed by Arlington, and Hillcrest Park, then curve into Christie Pits. Tunneling under streets and parks is always easier than tunneling under buildings. Basically follow the alignment of buried Taddle Creek. That means you get stations at St. Clair and Arlington, Christie Station (overlap with the existing Bloor-Danforth station), Grace and College (or thereabouts), Dundas and Grace, Gore Vale and Queen (Trinity Bellwoods). There are streetcar stops at each of these points where the DRL would intersect with east-west streetcar lines. Finally, have the final subway stops on this western half of the DRL overlap with the Spadina SmartTrac station and Union. The expressway entrances and exits could be very discrete. Simply have single-lane ramps funnel onto the right-hand lanes of existing streets. In terms of where the expressway would continue underground south of Queen, I would continue the expressway/subway eastbound underneath Richmond and have it divide into two branches at Bathurst, so that eastbound exits into downtown spilled out onto Adelaide just east of Bathurst and on Adelaide just east of Spadina. The westbound entry points onto the expressway would be just east of Bathurst on Richmond and just east of Spadina on Richmond. If the subway tunneling followed the southern branch of the expressway along Adelaide, it could easily divert south at Spadina to Front, where the tunneling would continue east along Front. Ideally, an expressway exit to the Gardner could travel south, maybe to a Front St. extension where it would travel westward. I realize this is big, but again, if the tolls are pricey and you amortize this bad boy over a long enough period, you've basically covered the subway tunneling capital costs for the western half of your Downtown Relief Line. And one last point, I think it's critical that we open up more of our best neighbourhoods to tourists and Torontonians. Areas like Corso Italia, Little Italy, Trinity Bellwoods (and by association West Queen West) should be very accessible. That's also why I'd suggest putting a SmartTrac station in the Distillery District. The track is already there! This isn't the 19th century. It's a bit silly to expect tourists to hike everywhere with backpacks or get on clunky streetcars to get to attractions. That's just not how it's done in great cities.