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Expanding a vital route in California's Central Valley

Mott MacDonald delivered a multibillion-dollar proposal to improve State Route 152 in California.


State Route 152 runs for about 82 miles (132 kilometers) from US 101 near Gilroy to State Route 99 in California’s Central Valley. A major east-west route in Northern California, the state has designated it as vital to interregional travel.

The Santa Clara Valley Transportation Authority (VTA) and the California Department of Transportation (Caltrans) have planned improvements to SR 152, including expansion from two to four lanes between US 101 and SR 156, and a truck climbing lane over Pacheco Pass.


VTA retained Mott MacDonald to coordinate improvements between three counties and the San Benito Council of Governments, and to examine the option of delivering the project as a public-private partnership (P3).

In addition to overall program management, we assisted the VTA with the procurement planning process.


Mott MacDonald delivered a major multibillion-dollar highway proposal, including life-cycle cost components necessary to apply for state and metropolitan planning organization funding, and a Transportation Finance and Innovation Act loan.

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