However, when the existing Alsea Bay Bridge began to deteriorate due to the saltwater environment, an equally handsome and innovative bridge, designed by Semyon Treygor at HNTB was built in 1991. The main span is a 450 foot long reinforced concrete through-arch with long approaches supported on 'Y' shaped piers. The replacement bridge was built with a thicker concrete cover to resist the salt-water spray. All that is left of Conde McCullough's original bridge are the concrete viewing platforms at each end of the new bridge.
Arch Bridges: Alsea Bay Bridge by Mark Yashinsky is licensed under a Creative Commons Attribution 3.0 United States License.