Omaha Structural Steel Works

The Omaha Structural Steel Works was a company also known as Omaha Steel Works and as Omaha Structural Steel Bridge Co. in Omaha, Nebraska.

A number of its works are listed in the U.S. National Register of Historic Places.

Works include (with variations in attribution):
 * AJX Bridge over South Fork and Powder River, I-25 W. Service Rd. (old hwy 87), Kaycee, Wyoming (Omaha Steel Works), NRHP-listed
 * Columbus Loup River Bridge, US 30 over the Loup R., Columbus, Nebraska (Omaha Steel Works), NRHP-listed
 * Lake Zumbro Hydroelectric Generating Plant, off Co. Hwy. 21 at N end of Lake Zumbro, Mazeppa Township, Mazeppa, Minnesota (Omaha Structural Steel Bridge Co.), NRHP-listed
 * Main Street Bridge, Main St. over W. Papillion Cr., Elkhorn, Nebraska (Omaha Structural Steel Works), NRHP-listed
 * Ocean to Ocean Bridge, Penitentiary Ave, Yuma, Arizona (Omaha Structural Steel Works), NRHP-listed
 * Plattsmouth Bridge, US 34 over the Missouri R., Pacific Junction, Iowa, and Plattsmouth, Nebraska (Omaha Structural Steel Works), NRHP-listed
 * Red Cloud Bridge, NE 281 over the Republican R., 2 mi. S of Red Cloud, Red Cloud, Nebraska (Omaha Steel Works), NRHP-listed
 * St. Joseph Bridge, 4.4 mi. SE of Joseph City on Joseph City-Holbrook Rd., Joseph City, Arizona (Omaha Structural Steel Works), NRHP-listed
 * Woodruff Bridge, 4 mi. S of Woodruff on Woodruff-Snowflake Rd., Woodruff, Arizona (Omaha Structural Steel Works), NRHP-listed

Shipyard
For World War 2 in 1944 Omaha Steel Works built YSD-11 Class Seaplane Wrecking Derrick, Hull classification symbol YSD is for Yard Seaplane Dirrick, Yard as in ship repair yard:
 * YSD 66
 * YSD 67
 * YSD 68
 * YSD 69