Hartsfield–Jackson Atlanta International Airport now the airport's second largest carrier. In May 2001 construction of an over fifth runway (10–28) began. It was completed at a cost of $1.28 billion and opened on May 27, 2006. It bridges Interstate 285 (the Perimeter) on the airport's south side, making Hartsfield–Jackson the nation's only civil airport to have a runway above an interstate (although Runway 17R/35L at Stapleton International Airport in Denver, Colorado crossed Interstate 70 until that airport closed in 1995). The massive project, which involved putting fill dirt eleven stories high in some places, destroyed some surrounding neighborhoods and dramatically changed the scenery of
Edmonton International Airport an Air Canada Connector air carrier. Also in 1999, Horizon Air began nonstop Fokker F28 Fellowship jet service to Seattle flying on behalf of Alaska Airlines on a code sharing basis. Martinair Holland also operated flights between Edmonton International Airport and Amsterdam Schiphol Airport prior to the termination of this airline's passenger service. Edmonton International Airport offers United States border preclearance facilities. Passengers from domestic flights connecting in Edmonton to a US destination use Quick Connect, which enables passengers to clear security and US Customs and Border Protection without having to claim and recheck baggage during the connection. The four-star