 Upon reaching the Interstate 26 terminus, US 17 becomes limited-access and above grade as it approaches the Cooper River via the Arthur Ravenel Jr. Bridge and the stretch of US 17 in Charleston is infamous among locals for its traffic congestion, especially on weekday mornings.The section running from SC 171 to Sam Rittenberg Boulevard has been named the "Charleston Nine Memorial Highway", in honor of nine Charleston firefighters killed in the line of duty in the Charleston Sofa Super Store fire on June 18, 2007.Upon crossing the river, the highway enters Mount Pleasant at grade and is signalized for several miles up through the second interchange with Interstate 526 and connecting roads to the Isle of Palms and Sullivan's Island.