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
- 5609 more...
- ItemBB020705 - Northern Pacific Engineering Drawing: Handrail/Drainage, Bridge 176 - Highway I-90, Westfall, Montana, undated
- ItemBB020706 - Northern Pacific Engineering Drawing: Shoofly Alignment, Bridge 176 - Highway I-90, Westfall, Montana, undated
- ItemBB020707 - Northern Pacific Engineering Drawing: General Plan, Bridge 176 - Highway I-90, Westfall, Montana, 1963
- ItemBB020708 - Northern Pacific Engineering Drawing: Abutments 1/2, Bridge 176 - Highway I-90, Westfall, Montana, undated
- ItemBB020709 - Northern Pacific Engineering Drawing: Abutment 1/2 Reinforcement, Bridge 176 - Highway I-90, Westfall, Montana, undated
- ItemBB020710 - Northern Pacific Engineering Drawing: Left Wingwall Abutment, Bridge 176 - Highway I-90, Westfall, Montana, undated
- ItemBB020711 - Northern Pacific Engineering Drawing: Right Wingwall Abutment, Bridge 176 - Highway I-90, Westfall, Montana, undated
- ItemBB020712 - Northern Pacific Engineering Drawing: Wingwall Abutment 1/2, Bridge 176 - Highway I-90, Westfall, Montana, undated
- ItemBB020713 - Northern Pacific Engineering Drawing: Girders, Bridge 176 - Highway I-90, Westfall, Montana, undated
- 2110 more...