Tennessee State Route 187State Route 187 is a 7.8 mile long east–west state highway in Gibson [County, Tennessee]Route descriptionSR 187 begins just outside the Humboldt city limits at an intersection with U.S. [Route 70A (Tennessee)|US 70A]/U.S. [Route 79 in Tennessee|US 79]/Tennessee [State Route 76|SR 76]. It goes east through rural farmland to have a short concurrency with SR 186 just south of the town of Gibson. It continues east, then northeast, through farmland and rural areas to enter the Milan city limits, where it passes through some industrial areas before SR 187 comes to an end at an intersection with US 45E/SR 43 just south of downtown. The entire route of SR 187 is a two-lane highway.Major intersections