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Creator
- McCullough, Conde Balcom 27
- Mercer-Fraser Company 16
- Oregon. State Highway Department 15
- Robert Wakefield & Company 8
- United Engineering & Construction CompanyCompany 8
- Waddell and Harrington 8
- American Bridge Division USS Steel 7
- Hedrick, Ira G. 7
- Kremers, Robert E. 7
- Lindenthal, Gustav 7
- Manson Construction Company 7
- Moffatt Nichol & Taylor 7
- Sverdrup & Parcel and Associates 7
- Booth & Pomeroy 6
- Lindstrom & Feigenson 6
- Strauss, Joseph B. (Joseph Baermann), 1870-1938 6
- Waddell, J. A. L. (John Alexander Low), 1854-1938 5
- Modjeski, Ralph 3
- Taylor, D. W. 3
- Hammer & Curry Contractors 2