I-105 Express Lanes Segments 1, 2 and 3

Project Description

This project consists of the preparation of Plan, Specifications and Estimates (PS&E) for the addition of two high occupancy toll (HOT) Express Lanes on I-105 on an accelerated schedule between I-405 and Central (Segment 1), and also Segments 2 and 3. The project includes approximately 15 miles of widening within the existing right-of-way, involving bridge widenings, new retaining and sound walls, and new toll collection infrastructure, including tie-in to the existing I-110 Express Lanes. ADVANTEC responsibilities included the PS&E of all electrical, ITS and tolling infrastructure - highway lighting, Caltrans TMS (ramp metering, fiber optic backbone, traffic signals, CCTV, CMS, traffic monitoring stations), and tolling (fiber optic backbone, CCTV, detection stations, toll zone gantries, VMS). Project also included coordination and implementation of ITS elements as part of Metro’s Integrated Corridor Management (ICM) Project associated with the new Clipper’s arena.