I haven't been following this project as closely as I probably should have, but perhaps some locals can shed light on the Mountain View Corridor downgrade. In the past there was a pretty big fight between those who wanted transit in the center of the freeway (usually a bad idea) versus building a freeway that was basically serving sprawl. Now it seems they'll be getting a surface boulevard. More info at the UDOT MV Corridor page. Below is the transit alternative and the light rail lines it would connect.