Location: US-75 and US-400, Montgomery Cty Reassurance shield as US-400 joins US-75. The concurrency will only last a few miles, but the concurrent route is a divided highway Location: US-75 and 6600 Rd, Montgomery Cty Reassurance shield a couple miles later. Location: US-75 and US-400, Wilson Cty Was we cross into Wilson County, US-75 will … Continue reading U.S. Route 400, US-75 to US-75