Railroad Archives Online
- CollectionD0027 - Timothy Miller Collection
- Series004 - Northern Pacific Railroad Company
- Subseries Level 1009 - Engineering Records
- Subseries Level 2008 - Physical plant drawing
- Subseries Level 3001 - Bridges
- 5386 more...
- ItemBB020482 - Northern Pacific Engineering Drawing: Pier Number 6, Bridge 9.46 - I-90, South of Wilburton, Washington, undated
- ItemBB020483 - Northern Pacific Engineering Drawing: Floor Beam/Stringer Layout, Bridge 9.46 - I-90, South of Wilburton, Washington, undated
- ItemBB020484 - Northern Pacific Engineering Drawing: Girder Elevations, Bridge 9.46 - I-90, South of Wilburton, Washington, undated
- ItemBB020485 - Northern Pacific Engineering Drawing: Girder Details I, Bridge 9.46 - I-90, South of Wilburton, Washington, undated
- ItemBB020486 - Northern Pacific Engineering Drawing: Girder Details II, Bridge 9.46 - I-90, South of Wilburton, Washington, undated
- ItemBB020487 - Northern Pacific Engineering Drawing: Detail of Floor System Pier, Bridge 9.46 - I-90, South of Wilburton, Washington, undated
- ItemBB020488 - Northern Pacific Engineering Drawing: Ballast Plate Layout/Detail, Bridge 9.46 - I-90, South of Wilburton, Washington, undated
- ItemBB020489 - Northern Pacific Engineering Drawing: Ballast Plate Details, Bridge 9.46 - I-90, South of Wilburton, Washington, undated
- ItemBB020490 - Northern Pacific Engineering Drawing: Bearings I, Bridge 9.46 - I-90, South of Wilburton, Washington, undated
- 2333 more...