Here in Portland, we're adding another light rail line along the path of the original Transit Mall, which opened in 1978. The track will run from Union Station on the north all the way to Portland State University on Fifth and Sixth avenues, where the train will share spaces with buses and cars. Over the past weekend, trains were shut down through central Portland to accommodate construction on this intersection, where the new track had to be cut through the existing track from 1986.
What I find most amazing about the project is the speed at which the road- and trackwork is being completed. There are portions in Old Town where the work is already finished, at least at the road level. None of the work to put in stations, overhead power, or the multitude of other work has even been started. I'll get some photos soon of some of the finished brickwork; it's really beautiful and a significant upgrade over the previous road surface, which didn't appear to have been touched since the 70s.