The 2018 Supplemental Transportation Budget included $550,000 for implementation of a corridor study to identify potential improvements between exit 116 and exit 99 of Interstate 5. WSDOT, the Nisqually Indian Tribe, and Thurston Regional Planning Council leveraged the initial investment into $2 million worth of planning work scheduled for completion in July 2019.

Additionally, $2.25 million towards a necessary NEPA/SEPA review of mid- and long-term actions was included in the 2019 capital budget.