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
- 3728 more...
- ItemBB018331 - Northern Pacific Engineering Drawing: Bearings I, Bridge 9.46 - I-90, South of Wilburton, Washington, undated
- ItemBB018332 - Northern Pacific Engineering Drawing: Bearings II, Bridge 9.46 - I-90, South of Wilburton, Washington, undated
- ItemBB018333 - Northern Pacific Engineering Drawing: Drainage, Bridge 9.46 - I-90, South of Wilburton, Washington, undated
- ItemBB018334 - Northern Pacific Engineering Drawing: Walk/Handrail Detail, Bridge 9.46 - I-90, South of Wilburton, Washington, undated
- ItemBB018335 - Northern Pacific Engineering Drawing: General Plan, Bridge 10.1 - Highway $1, West of Fort Lewis, Washington, 1965
- ItemBB018336 - Northern Pacific Engineering Drawing: Abutments 1/2, Bridge 10.1 - Highway #1, West of Fort Lewis, Washington, undated
- ItemBB018337 - Northern Pacific Engineering Drawing: Abutment Details, Bridge 10.1 - Highway #1, West of Fort Lewis, Washington, undated
- ItemBB018338 - Northern Pacific Engineering Drawing: Wing Wall Abutment 1, Bridge 10.1 - Highway #1, West of Fort Lewis, Washington, undated
- ItemBB018339 - Northern Pacific Engineering Drawing: Wing Wall Abutment 2, Bridge 10.1 - Highway #1, West of Fort Lewis, Washington, undated
- 3991 more...