one more...

I am the friend who was injured adn I really hope that they get this fixed before a child happens upon it. The gash on my foot would be really bad if I had a child size foot!!!!

You may want to contact by phone the team at Arlington County responsible for sidewalks - since this presents an immediate hazard.

I think this is the number to call - though I'm sure they can refer you to the right place if it is not.
703-228-6570

Reference:
http://www.arlingtonva.us/departments/EnvironmentalServices/uepd/asphalt/EnvironmentalServicesStreet.aspx

Thank you for your comment, I already spoke to them directly and altho I'm out of town at the moment, I believe I saw that it was remedied immediately.

Arlington is a wonderful community!!

Arlington officials report this broken sign has been fixed.