U.S. Coast Guard Moves Forward with Proposed 4-mile-wide Arctic Shipping Corridor Near Alaska The U.S. Coast Guard and partnering federal agencies plan to organize shipping activity along a designated corridor to protect the marine environment and local communities. The route would lead from Western Alaska in the Bering Strait to the U.S.-Canada border in the Beaufort Sea. Survey work carried out by icebreakerHealyhelps inform the exact routing of the corridor.