Burlington Northern Engineering Drawing: General Plan, Bridge 11.1 - Mercer Slough (formerly Northern Pacific), South of Wilburton, Washington, 1970
Burlington Northern Engineering Drawing: General Plan, Bridge 11.72 - Lake Hills Boulevard (formerly Northern Pacific), South of Wilburton, Washington, 1970
Northern Pacific Engineering Drawing: Abutment 1 Details, Bridge 11.72 - Lake Hills Boulevard, South of Wilburton, Washington, undated
Northern Pacific Engineering Drawing: Abutment Number 1, Bridge 9.46 - I-90, South of Wilburton, Washington, undated
Northern Pacific Engineering Drawing: Abutment Number 1, Bridge 9.46 - I-90, South of Wilburton, Washington, undated
Northern Pacific Engineering Drawing: Abutment Number 7, Bridge 9.46 - I-90, South of Wilburton, Washington, undated
Northern Pacific Engineering Drawing: Abutment Number 7, Bridge 9.46 - I-90, South of Wilburton, Washington, undated
Northern Pacific Engineering Drawing: Abutment/Pier/Bridge Layout, Bridge 9.46 - I-90, South of Wilburton, Washington, undated
Northern Pacific Engineering Drawing: Abutment/Pier/Bridge Layout, Bridge 9.46 - I-90, South of Wilburton, Washington, undated
Northern Pacific Engineering Drawing: Changes on South Abutment, Bridge 9.1 - Lk .Wash Boulevard, South of Wilburton, Washington, 1915