The Shoulder Sample Median is a fenced roadside display of 27 preserved highway shoulder cross-sections, maintained in a narrow former maintenance parcel by the Marden Flat Township Road District and signed from the frontage road as an educational turnout. Each sample shows a different approved edge treatment, gravel composition, and drainage profile once used on county and state roads between 1958 and 1996. It appears to have been assembled after a resurfacing grant left the district with a surplus interpretive allowance that could not be reclassified before the fiscal year closed. The most discussed feature is Sample 14, which is labeled "experimental wedge shoulder, discontinued" and has been repainted at least twice. Parking is present but striped in a way that suggests somebody expected buses and then reconsidered.