TriMet’s MAX Blue Line improvements project is underway April 06, 2021 TriMet’s MAX Blue Line improvements project is underway. TriMet TriMet’s MAX Blue Line Improvements project is underway now through May 23, 2021. Multiple improvements are happening throughout our oldest light rail line. From replacing rail, just 20 feet in some areas and more than 2,600 feet in the curved trackway west of the Hollywood Transit Center, to adding new concrete rail ties in that area, this will improve the durability of the trackbed and make the ride smoother. We’re making other improvements as well, including replacing two heavily used switch machines at Gateway Transit Center and rebuilding rail crossings inside the transit center where buses cross MAX tracks.