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District 3 Offices: Ada, Adams, Boise, Canyon, Elmore, Gem, Owyhee, Payette, Valley, and Washington Counties. HQ located in Boise. Collections are oriented around transportation projects occurring within these boundaries and tend to be modern (1960s through early 2000s), highlighting major transportation achievements. Some duplication between the headquarters and district collections is to be expected. District Three Topics: Highway Projects 1994-1997, Snake River Bridges, Cole and Overland Interchange, Franklin Interchange, Meridian Interchange, Division Dam Bridge, Isaac Canyon, Horseshoe Bend Highway, Boise, State Highways 21, 44, and 55, and I-84.