The Tennessee Department Of Transportation Warns Drivers To Expect Delays This Holiday Weekend On Interstate 81 And 26. The Closure Of I-40 At The North Carolina Line Has Increased Truck Traffic On Alternate Routes. Officials Say One Lane Remains Open Each Way On I-26 In Erwin And The State Route 351 Bridge In Greene County Is Down To One Lane With Signals. Truckers Are Being Warned To Avoid US 129 And Use Official Detours.