Douglas Island is a tidal island in the U.S. state of Alaska, just west of downtown Juneau and east of Admiralty Island. It is separated from mainland Juneau by the Gastineau Channel. The Douglas Bridge, connecting the island with Juneau, provides a two lane road to and from the island and accommodates both vehicular and pedestrian traffic. Recently, there have been plans to build a new bridge from North Douglas to the Mendenhall Valley. Admiralty Island lies to the west and south, across the Stephens Passage. Douglas Island was named for John Douglas, Bishop of Salisbury, by Captain George Vancouver.