The Miles Glacier Bridge, also known as the Million Dollar Bridge, was built in the early 1900s, across the Copper River fifty miles from Cordova in what is now the U.S. state of Alaska. It is a multiple-span Pennsylvania truss bridge which completed a 196mi railroad line for the Copper River and Northwestern Railway, built by J. P. Morgan and the Guggenheim family to haul copper from the old mining town of Kennicott, now located within the Wrangell–St. Elias National Park and Preserve, to the port of Cordova. It earned its nickname because of its $1.4 million cost, well recouped by the about $200 million worth of copper ore which was shipped as a result of its construction.Current access to the bridge is limited to jet boat travel up the Copper River or boat travel downriver from Chitina due to the erosion along the Copper River Highway.HistoryThe Copper River and Northwestern Railway and associated bridges were built between 1906 and 1911 by Michael James Heney. This bridge was the most significant of the group. However, its use as a railroad bridge ended in 1938 when the Copper River and Northwestern Railway shut down.