WA/DOT: I-5 Marvin Rd to Mounts Rd Improvements

planning schematics

I-5 from Marvin Road to Mounts Road (Exit 111 to Exit 116). 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.