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
- 3764 more...
- ItemBB018367 - Northern Pacific Engineering Drawing: Abutment Details, Bridge 23.47 - Underpass (I - 5), South of Ketron, Washington, undated
- ItemBB018368 - Northern Pacific Engineering Drawing: Northeast Wing Wall, Bridge 23.47 - Underpass (I - 5), South of Ketron, Washington, undated
- ItemBB018369 - Northern Pacific Engineering Drawing: Southwest Wing Wall, Bridge 23.47 - Underpass (I - 5), South of Ketron, Washington, undated
- ItemBB018370 - Northern Pacific Engineering Drawing: Northeast/Southwest Wing Wall, Bridge 23.47 - Underpass (I - 5), South of Ketron, Washington, undated
- ItemBB018371 - Northern Pacific Engineering Drawing: Concrete Deck, Bridge 23.47 - Underpass (I - 5), South of Ketron, Washington, undated
- ItemBB018372 - Northern Pacific Engineering Drawing: Girder Span, Bridge 23.47 - Underpass (I - 5), South of Ketron, Washington, undated
- ItemBB018373 - Northern Pacific Engineering Drawing: Bearings, Bridge 23.47 - Underpass (I - 5), South of Ketron, Washington, undated
- ItemBB018374 - Northern Pacific Engineering Drawing: Handrail Details, Bridge 23.47 - Underpass (I - 5), South of Ketron, Washington, undated
- ItemBB018375 - Northern Pacific Engineering Drawing: Drainage, Bridge 23.47 - Underpass (I - 5), South of Ketron, Washington, undated
- 3955 more...