in Georgia along US 441, US 129 (along the Dragon, an stretch of road in North Carolina and Tennessee adjoining Great Smoky Mountains National Park with 318 curves), or SR 77. The proposed numbering of the highway does not fit within the usual conventions of the existing Interstate Highway grid, where primary north–south highways are assigned odd numbers, and such odd route numbers increase from west to east. Under the normal Interstate Highway grid, I-3 should instead be located on the West Coast between the Pacific Ocean and I-5. All odd numbers between I-75 and I-95 are already assigned, but most them are confined to states well north of the proposed route. The 2017 approval of second I-87 in North Carolina in addition to the I-87 in New York may indicate willingness to duplicate other north–south route numbers. See also Central Savannah River Area References External links 2005 SAFETEA-LU legislation, from the Library of Congress Third Infantry Division Highway Corridor Study U.S. DOT - 3rd Infantry Division Highway Corridor Study: Third Meeting of the Expert Working Group Georgia DOT - Savannah River Parkway description Interstate Guide Proposed Interstates: I-3 I-3 on The Virginia Highways Project's NCRoads.com Annex 03 03 03