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SR 510 Yelm Loop Phase 2 Improvement Project: Supplemental Environmental Assessment and Online Public Meeting – Archaeological and historic resources

Projects that receive federal funding or are subject to federal approval must comply with Section 106 of the National Historic Preservation Act (NHPA) of 1966. This Act requires federal agencies to evaluate the effects of federally funded or permitted projects on prehistoric and historic sites, buildings, structures, and properties of traditional religious and cultural importance that are listed on, or eligible for listing on the National Register of Historic Places (NRHP). Projects must consult with stakeholders to avoid, minimize, or mitigate adverse effects on any historic resources.

Forty-three historic-period resources on twenty parcels within the Area of Potential Effect (APE) were identified, evaluated, and determined to be ineligible for listing on the NRHP. Four archaeological sites were evaluated, and one was determined eligible for listing on the NRHP. The site is within the area proposed for ground disturbing construction and would be adversely affected as a result. WSDOT is working with the Nisqually Tribe and the Washington Department of Archaeology and Historic Preservation to prepare a Memorandum of Agreement that will establish how the site will be managed and impacts mitigated.

For more information

To read more about the study approach, existing conditions, and effects on archaeological and historic resources, please see Section 3.10 Archaeological and Historic Resources (PDF 336KB).