The Telegraph » In an effort to ease traffic congestion caused by a growing population and expansion at the port of Savannah, the Georgia Department of Transportation (GDOT) proposes the construction of two truck-only lanes on a 38-mile span of Interstate 75 at an estimated cost $2.06 billion. Several states across the country have conducted truck-only lane feasibility studies, and GDOT proposed a similar project in the City of Atlanta in 2008. The project for the city of Savannah is still in the development stage.