Northeast Corridor missing dependecies

[PendennisCastle]

I downloaded wridenour's Northeast Corridor Baltimore - Washington route, i downloaded all the dependencies i could find but i'm still missing these 4, does anyone know where i can find them?

Unknown Location: <kuid2:173286:10030:1>
Unknown Location: <kuid2:173286:10048:1>
Unknown Location: <kuid2:68787:22420:2>
Unknown Location: <kuid2:82412:6097111:1>