8N7 - RESOLUTION APPROVING A TRI-PARTY AGREEMENT BETWEEN MIAMI-DADE COUNTY, THE STATE OF FLORIDA DEPARTMENT OF TRANSPORTATION AND THE SOUTH FLORIDA REGIONAL TRANSPORTATION AUTHORITY FOR THE INSTALLATION OF RAILROAD CROSSING TRAFFIC CONTROL DEVICES AT CROSSING NO. 628424V, ON NW 17TH AVENUE BETWEEN NW 22ND STREET AND NW 23RD STREET; AND AUTHORIZING THE COUNTY MAYOR OR COUNTY MAYOR'S DESIGNEE TO EXECUTE SAME AND EXERCISE PROVISIONS CONTAINED THEREIN(Transportation and Public Works)