Idaho state highway engineer Charles A. Kyle designed the bridge, which includes four 70 ft (21 m) open spandrel arches supporting a 40 ft (12 m) wide roadbed with four lanes of motorized traffic crossing river.

[5] In 1914 architect Charles W. Wayland envisioned a grand boulevard approaching the Idaho State Capitol Building,[6] and after the Boise Depot was built in 1925, city planners redesignated 7th Street as Capitol Boulevard, and the Capitol Boulevard Memorial Bridge was constructed and dedicated as a memorial to Oregon Trail pioneers.

[7] The bridge was refurbished in 1987 and restored in 2013[8][9] and was added to the National Register of Historic Places November 5, 1990.

[1] Media related to Capitol Boulevard Memorial Bridge at Wikimedia Commons

This article about a property in Idaho on the National Register of Historic Places is a stub.