Eastern and Western

In the City of Los Angeles, there is a Main street.  Equidistant to the east and west of Main Street are Eastern Ave and Western Ave, respectively.  To see more, click here.  LA really isn't too big, by car, but think about when it was established in the 1800's.  The span from Western to Eastern must have been insurmountable, you'd never get from one to the other if you were an average person. 

Now it's just congested traffic and neighborhood biases that keep you from traveling east to west or vice versa.