POMONA TO CLAREMONT A LINE EXTENSION UPDATES: PARSONS AND SSH JV CONTINUE THEIR WORK

The Pomona to Claremont A Line Extension is underway with final design and pre-construction. Parsons continues to advance the project design towards its next milestone of 60%, which remains on schedule to be ready for review in early January 2027. From there, the design will progress to 85% and 100% before reaching “Approved for Construction” drawings.

To support the design effort, Parsons attends regular task force meetings on different project elements (track, civil, utilities, structures, stations, etc.) with Construction Authority staff and consultants, meets with the corridor cities and other third-party agencies, and continues to deploy survey crews throughout the 2.3-mile corridor to collect data on existing conditions. This month, as seen in the photos above, surveyors were out collecting “top of rail” data which will give them the existing elevation of the freight tracks. Starting in October, crews will be collecting geotechnical borings to understand the soil conditions under the project corridor and at the street crossings where future bridges will be built for the project.

As Parsons continues their work, SSH JV continues to support the project by providing feedback on the design, working with the Construction Authority to find ways to reduce risk and costs on the future construction effort, developing an overall construction schedule, preparing programmatic plans, conducting field reviews and developing early work package recommendations. All of this is part of the pre-construction phase of their work that will be ongoing through all of 2026 and much of 2027.

As a reminder, SSH JV is under contract for the initial pre-construction work phase and will have the opportunity to negotiate a construction contract to build the Pomona to Claremont A Line Extension with a guaranteed maximum price once the design reaches 85%. That process will conclude in Fall 2027, with major construction expected to begin in late 2027 and take approximately four years.

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