Umauma Stream Bridge is a steel girder and trestle bridge with a total length of 281 feet and a roadway width of 28 feet. It is built at the deck elevation of 261 feet over Umauma Stream along the Hamakua Coast of the Island of Hawaii. The superstructure is composed of a concrete deck on steel girders, and the substructure is composed of c. 1912 steel railroad trestle supports with masonry (lava-rock) abutments. The Umaumau Stream Bridge is significant for its association with the Hilo Railroad Company. In addition it is significant for its association with three founders of the Hilo Railroad Company and as a representative example of early 20th-century engineering technology, as well as a source for information about early 20th-century steel manufacture and construction.
This list of Hawaii’s historic properties is provided as a public service by Historic Hawaii Foundation. It is not the official list of properties designated on the Hawaii State Register of Historic Places. For official designations and determinations of eligibility, contact the State Historic Preservation Division of the Department of Land and Natural Resources of the State of Hawaii at 808-692-8015.