Among the Los Angeles County Metropolitan Transportation Authority’s (LA Metro) current projects is the 57/60 Confluence Project is a three-phase program of improvements consisting of ramp and interchange reconfigurations as well as the addition of auxiliary collector/distributor and bypass lanes to significantly reduce the weaving and the resulting congestion and accidents.

Among the Orange County Transportation Authority’s (OCTA) current projects is to add a general purpose lane and extend a second HOV lane along Northbound and South bound I-5 from SR-73 to El Toro Road to enhance mobility and safety for 360,000 motorists in southern Orange County.

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 to 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.

The project provides active traffic management (ATM) and integrated corridor management (ICM) strategies on Route 405 from Rosecrans Avenue to Route 90 to maximize corridor wide system performance and maxamize freeway capacity to address congestion. ADVANTEC was responsible for supporting the development of the Concept of Operations (ConOps) and finalizing the locations of Traffic Management System (TMS) elements including census stations, Ramp Metering Systems (RMS), CCTV, changable message signs (CMS), and ATM gantries, dynamic signs, kane-by-lane dynamic lane management signs, maintenance vehicle pullouts and VDSs in preparation of the draft Project Report.