This project will begin with a federal Planning and Environmental Linkages (PEL) study focused on I-5 from Marvin Road to Mounts Road and start the National Environmental Policy Act (NEPA) environmental review in Summer of 2023.
This next phase, a Focused PEL, will study I-5 from Marvin Road to Mounts Road (Exit 111 to Exit 116). The Focused PEL will consider additional technical analyses and stakeholder input to arrive at a final purpose and need and preferred alternative(s), to advance into the National Environmental Policy Act (NEPA) environmental review beginning in 2023.
Funding is provided to accelerate work along I-5 through the Nisqually River Delta for preliminary engineering, design and right of way acquisition to address flood risk, improve mobility through the corridor between Mounts and Marvin Roads, and enhance the ecosystem at the I-5 Nisqually Delta crossing. Funding is also provided to construct three roundabouts on SR 507 as the only viable alternative to I-5.
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This page serves as the landing point for a potential future project. There is no construction planned at this time and traffic is not affected in this area.
What to expect
The planning products produced in this planning process may be adopted during a subsequent environmental review process in accordance with 23 USC 168. We may adopt the Purpose and Need and identified alternative(s), assessed during this PEL process, into the National Environmental Policy Act (NEPA) environmental review process. Our goal is to not revisit these points once NEPA begins in Summer 2023.
A National Environmental Policy Act review will look at I-5 from Marvin Road to Mounts Road and the area around the Nisqually River.