Idaho Archaeology & Historic Preservation Month
Each year the Idaho State Historic Preservation Office organizes and promotes statewide opportunities for the public to learn about Idaho archaeology, history, and historic preservation. The Idaho Archaeology and Historic Preservation Month program is a celebration of everything dealing with Idaho’s archaeology and history. Events, presentations, and programs have been reaching all corners of the state for over 30 years!
If you would like a poster mailed to you, please email us at shpo@ishs.idaho.gov.
2025 Idaho Archaeology & Historic Preservation Month Theme
Bridging The Past: The Rainbow Bridge, extending over the North Fork of the Payette River on Highway 55, is an open spandrel arch bridge designed by Charles Kyle. The bridge, which is listed in the National Register of Historic Places, was constructed in 1933 and is the largest of its type in the state. It is currently at risk, as the crossing is to be redesigned, leaving the fate of the bridge in question.
Contact
(208) 488-7461
