Railroad Archives Online
- CollectionD0027 - Timothy Miller Collection
- Series001 - Burlington Northern Railroad Company
- Subseries Level 1009 - Engineering Records
- Subseries Level 2008 - Physical plant drawing
- Subseries Level 3007 - Track
- 96 more...
- ItemBB033333 - Burlington Northern Engineering Drawing: 12 Foot Concrete Arch Culvert, Culverts, undated
- ItemBB033334 - Burlington Northern Engineering Drawing: 8 Foot Concrete Arch Culvert, Culverts, undated
- ItemBB033335 - Burlington Northern Engineering Drawing: 16 Foot Concrete Arch Culvert, Culverts, undated
- ItemBB033336 - Burlington Northern Engineering Drawing: 6 Foot Concrete Arch Culvert, Culverts, undated
- ItemBB033337 - Burlington Northern Engineering Drawing: 6 Foot Concrete Arch Culvert, Culverts, undated
- ItemBB033338 - Burlington Northern Engineering Drawing: 10 Foot Concrete Arch Culvert, Culverts, undated
- ItemBB033339 - Burlington Northern Engineering Drawing: 20 Foot Concrete Arch Culvert, Culverts, undated
- ItemBB033340 - Burlington Northern Engineering Drawing: 12 Foot Concrete Arch Culvert, Culverts, undated
- ItemBB033341 - Burlington Northern Engineering Drawing: 16 Foot Concrete Arch Culvert, Culverts, undated
- 56 more...