Here are lists of companies that you might contact regarding employment. Obviously, if the email of the president is listed, that's not who you want to contact. That will get you blacklisted in a hurry. Rather, Google the company, look up "jobs" or "employment", and send them your resume.
American Council of Engineering Companies:
State Highway Departments: http://www.fhwa.dot.gov/webstate.htm
Various companies who hire Civil Engineers:
07-20-09 to 06-22-11 = 12634