Marsh Engineering Company

The Marsh Engineering Company was a company that designed many significant bridges in the United States, including a number that survive and are listed on the National Register of Historic Places. It was located at 206 Masonic Temple[1] in Des Moines, Iowa.

The firm's principal engineer was James Barney Marsh (1856–1936), an engineer and bridge designer born in North Lake, Wisconsin.

Works include:

  • Cotter Bridge, constructed in 1930, is the only bridge built by Marsh Engineering Company of Des Moines, Iowa in the state of Arkansas. It brings U.S. Route 62, over the White River, and opened up a large area of the Ozarks for recreation. (NRHP-listed)
Henley Street Bridge, in Knoxville, TN

The Wilson River Bridge (1931), near Tillamook, Washington, and others like it in Washington were designed by notable architect Conde McCullough, who had been employed at Marsh Engineering Company during the 1910s.


  1. ^ Marsh, James. "Des Moines and Polk County Directory - 1922". p. 861. Retrieved 31 May 2022.

Coordinates: 41°35′10″N 93°37′47″W / 41.58599°N 93.629764°W / 41.58599; -93.629764