Cohas Brook Bridge, Spanning Cohas Brook, Highway 28 (South Willow Street ), Manchester, Hillsborough County, NH

Significance: The bridge is significant as the first example of an open spandrel, reinforced concrete, parabolic arch bridge erected in New Hampshire, and one of only three, apparently, in the state. The structure is significant for its association with the designer, Harold E. Langley, an important bridge engineer with the New Hampshire Department of Public Works and Highways during the second quarter of the 20th century; for its proximity to the site of several earlier crossings over the Cohas Brook; and for its association with the development of the city and state transportation network.
Survey number: HAER NH-9
Building/structure dates: 1929 Initial Construction