I observed the intersection located on Martin Luther King Jr. Avenue and Good Hope Road Southeast D.C. The intersection is the starting point of the downtown and historic district of Anacostia.
How about connecting it together (not sure if it's grammar correct)
I observed the place where Martin Luther King Jr. Avenue intersects with Good Hope Road Southeast D.C, the starting point of the
downtown ( don't know if you need it there) and historic district of Anacostia.
I don't really know what you were trying to ask so i cannot help you with the thesis, but I hope it helps.