If you use Highway 509 just south of West Seattle/White Center/South Park, you’ll want to know about a big project that’s about to get going – repaving northbound 509 between S. 112th and S. 168th, starting in about a week and a half. The project also will replace sections of guardrail with concrete barrier, and that work will require some lane closures on the southbound side too. The project page is here; today’s news release with project details is here.