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
- 3720 more...
- ItemBB018323 - Northern Pacific Engineering Drawing: Pier Number 6, Bridge 9.46 - I-90, South of Wilburton, Washington, undated
- ItemBB018324 - Northern Pacific Engineering Drawing: Floor Beam/Stringer Layout, Bridge 9.46 - I-90, South of Wilburton, Washington, undated
- ItemBB018325 - Northern Pacific Engineering Drawing: Girder Elevations, Bridge 9.46 - I-90, South of Wilburton, Washington, undated
- ItemBB018326 - Northern Pacific Engineering Drawing: Girder Details I, Bridge 9.46 - I-90, South of Wilburton, Washington, undated
- ItemBB018327 - Northern Pacific Engineering Drawing: Girder Details II, Bridge 9.46 - I-90, South of Wilburton, Washington, undated
- ItemBB018328 - Northern Pacific Engineering Drawing: Detail of Floor System Pier, Bridge 9.46 - I-90, South of Wilburton, Washington, undated
- ItemBB018329 - Northern Pacific Engineering Drawing: Ballast Plate Layout/Detail, Bridge 9.46 - I-90, South of Wilburton, Washington, undated
- ItemBB018330 - Northern Pacific Engineering Drawing: Ballast Plate Detail, Bridge 9.46 - I-90, South of Wilburton, Washington, undated
- ItemBB018331 - Northern Pacific Engineering Drawing: Bearings I, Bridge 9.46 - I-90, South of Wilburton, Washington, undated
- 3999 more...