The extension of the San Diego Trolley will connect Mission Valley and the East County along the Interstate 8 corridor. This $450 million project includes a tunnel that passes under the San Diego State University, an underground trolley station, and a pedestrian bridge. Randall Lamb is providing mechanical, electrical and plumbing design services for the relocation of all existing underground and overhead utilities to accommodate the new trolley tunnel and trolley station. Determination of size, quantity, and location of telephone, broadband fiber, broadband coaxial cable, and CATV lines was necessary to assist in the development of the utility corridor's size, location, and crossings. Coordination with Pacific Bell, Cox Communications, and Teleport Communications Group/AT&T was also performed in order to develop telecommunications construction phasing plans, construction drawings, and specifications for temporary and permanent relocation of telecommunication utility lines as well as connections to SDSU facilities.