 The interchange also includes direct ramps to the northbound lanes of US 395 as well as access to Columbia Drive, a local street that connects to downtown Kennewick.The junction is located near the site where the Kennewick Man, a skeleton belonging to a 9,000-year-old man, was discovered in 1996.SR 240 is maintained by the Washington State Department of Transportation (WSDOT), which conducts an annual survey on the state's highways to measure traffic volume in terms of average annual daily traffic.