When you talk to your extension service (or poke around at
http://www.dcnr.state.pa.us/forestry/commontr/
http://hortweb.cas.psu.edu/extension...heet-list.html and so
forth) ask if there are any broadleaved evergreens that will do well in
your situation. Holly is one that comes to mind; also Rhododendron species.
Since we don't know the exposure or soil type, there's not much to go on.

Also, you may find that a small grove of trees looks better than one lonely
one standing on the corner... 3-5 of various heights, or even the same.
The advantage of a mixed planting is that you can put a fast grower in the
bunch, and cut it down as soon as the slower growing, more desirable
specimens are of sufficient height.

Want some really fast cover? Consider a trellis and something like hops...

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