Yes it's true, the Micro Engineering viaduct kits are still out there in hobby shops, and I found a place with them in stock. So I bought a 320' kit, a 120' extension kit, and an 80' extension kit which put the span perfectly at my required 520'. However, the kits had mixed girder lengths of 40' and 80', which causes a tricky situation for the curve: The parts are laid out on my curve template for the bridge. As supplied, a mix of girders makes up the curve, which is not what I had in mind. I was hoping to use only 40' girders so I could get more joints and a smoother curve, along with more of those cool trestle bents. As shown, the trestle towers would go over the 40' girders on the template, for a total of 4. With a span made of nothing but 40' girders, there would be 6, and they are cool to look at IMO. Anyhow, the shop I ordered from might be willing to exchange some of the ME parts sprues. The kits were actually just compilations of ME trestle parts and not the actual viaduct kits that ME sold (they were missing a few of the details, and the bridge flex track). So I'm hoping the shop has enough parts sprues in stock to be able to fulfill a request I made to them: If any of you know Larry at Able Hobby in Spokane, WA, put in a good word for me please. So anyhow, thus begins the constructoin of the biggest N scale bridge I'll probably ever build. It's going to be a centerpiece of my climbing grade section of the layout, right out in front and one of the first things to be seen when approaching the layout.