<AC Transit – Line 97 South County Major Corridor Transit Performance Initiative (TPI) Project

Construction Management / ADA Accessibility

AC Transit – Line 97 South County Major Corridor Transit Performance Initiative (TPI) Project

Alameda County, California


AC Transit

Paul Westermann
Thomas K. Butt


GHD, Inc.

AC Transit’s Line 97 route is 13 miles and extends from the Bay Fair Bay Area Rapid Transit (BART) station to the Union Landing Transit Center. Line 97 is one of the 11 high ridership routes in the service area, and the project represents a critical investment in the communities served by AC Transit.

The goal of this project is to enhance corridor traffic, reduce fuel consumption and vehicle emissions, and improve safety and transit operations through traffic signal improvements. The TPI Project includes improvements at 47 signalized intersection, including transit stop improvements and Transit Signal Priority (TSP). In addition, an adaptive traffic signal system will be deployed at 34 intersections along Hesperian Boulevard, from San Leandro to Hayward. These transit systems will help ease congestion by adjusting signal timing to accommodate changing traffic conditions in real time.

This project employs cutting-edge technology to implement AC Transit’s strategy to maximize operational benefit and efficiency and achieve the Metropolitan Transportation Commission’s Sustainability performance metrics. To make this cutting-edge technology work effectively, low-tech relocations of bus stops were required.

Working with Interactive Resources, the GHD, Inc. team applied lessons learned from similar projects to assist the designer in adapting details to meet actual field conditions and provide ADA compliant access to the new locations. Field adaptations were sometimes made with revised configurations approved on-the spot by a jurisdiction’s field representatives with concrete crews standing by. The GHD team developed creative configurations when needed to achieve allowable curb ramp slopes within the space available.

GHD provided a proactive and organized approach to construction management (CM), diligently working with the design team, agency, and contractor concerning submittals, daily inspection, requests for information, and change orders.

The CM Team used their collective individual expertise to facilitate agency coordination, locate alternate equipment that would have otherwise resulted in delay beyond the construction delivery, and provide support to the project delivery as system integrator.

In addition, GHD used PROCORE Construction Management Software to manage the flow of submittals and RFIs; allowing the Owner, Contractor, designer, CM field staff and CM office staff almost instantaneous access to document content and status 24/7 from anywhere with an internet connection.

117 Park Place • Point Richmond, CA • 94801 •  • info@intres.com • 510-236-7435