Arguably... Waltham's rail trail is getting built in 4 or 5 segments depending on how you count, haha.

There's a tiny segment that was built a few years ago as part of the construction project off 128 that includes Market Basket, etc.

This is the main 2.75 miles. It will start after that tiny segment.

Connecting to the Weston Trail over 128 and the rail tracks, using the two existing train bridges, is under design now by DCR, and it's unclear who will fund it right now. It's probably going to incorporate road changes on Main St/117 and Stow St. built by the unrelated 1265 Main roadway/development project. (This is the part I'm not sure is 1 or 2).

Also, the East end of the trail, `0.5 miles, will be unfinished, presumably until Belmont finishes Belmont Phase 2? I haven't heard much about this part, but it seems like it should be much simpler than the West connection to Weston?