Tennessee State Route 251 Tennessee State Route 251 State Route 251 (SR 251) is a west–east secondary state highway in Middle Tennessee. SR 251 begins in rural Cheatham County at an intersection with SR 249 (Sams Creek Road/River Road) south of Ashland City. It winds its way southeast along the banks of the Cumberland River as River Road to cross into Davidson County. It continues southeast as River Road Pike as it enters Nashville and has an intersection with US 70/SR 24 (Charlotte Pike), where SR 251 becomes part of Old Hickory Boulevard. It then continues south to have an interchange with I-40 (Exit
Cumberland Mountain State Park Byrd Lake's headwaters. The Cumberland Plateau Trail is a self-guided interpretive trail that loops through a diverse forest stand downstream from the dam. The Byrd Creek Trail is a extension of the Cumberland Plateau Trail that loops around the banks of Byrd Creek. The Cumberland Overnight Trail is a extension of the Byrd Creek Trail that winds through the hills flanking Threemile Creek. The backcountry campsite is located in a cedar flat near the overnight trail's halfway point. The Cumberland Homesteads Tower Museum, located from the park, recalls the development of the Cumberland Homestead Community of the 1930s. The octagonal