Marsh Rainbow Arch Bridge, West Eighth Street North, Newton, Jasper County, IA

Significance: The West 8th Street North bridge in Newton is one of fifteen known concrete rainbow arch bridges in Iowa. It is considered an important structural form in the development of reinforced concrete technology and illustrates Iowa's significant civil engineering heritage. It was designed by the Marsh Engineering Company of Des Moines, Iowa, for the Chicago, Rock Island and Pacific Railroad.
Survey number: HAER IA-4
Building/structure dates: 1927 Initial Construction
National Register of Historic Places NRIS Number: 88002529