Looks to me like maybe your in game graphics detail level is set too low. It should be set at 10. Do you have all the required "extras" for this route? (dependencies?)
Ryzen 7 2700K, Asus Prime X570P, 32Gb DDR4, 2x 1Tb M.2 SSD's, RTX2060 6Gb, Occulus Rift Win 10 Pro 64bit, keyboard/ mouse/ wheel/ pedals/ baseball bat
Medium detail, i put it on high detail then highest and still didnt work, no weather and half the track is missing still and the trains are missing, but not getting a missing assests pop up
Go to 3D trains site. I'm pretty sure you have to register for the forum and then you can either purchase the high resolution version or get the freeware version. Make sure you get the ones for RW since he also has them for MSTS. The free ones will work for the Ann Arbor.