All workbench locations only vid. Credit to GosuNoob on YouTube. There are 25 workbenches in total.
Timestamps: 0:00 1. Jackson Patrol - Library Workbench
1:31 2. Seattle Day 1 - Downtown Workbench
2:43 3. Seattle Day 1 - Capitol Hill Workbench
3:27 4. Seattle Day 1 - Capitol Hill Workbench No.2
4:18 5. Seattle Day 1 - The Tunnels Workbench
5:49 6. Seattle Day 2 - Hillcrest Workbench
6:17 7. Seattle Day 2 - Hillcrest Workbench No.2
7:04 8. Seattle Day 2 - The Seraphites Workbench
8:00 9. Seattle Day 2 - The Seraphites Workbench No.2
9:40 10. Seattle Day 3 - Road to Aquarium Workbench
10:48 11. Seattle Day 3 - Road to Aquarium Workbench No.2
10:10 12. Seattle Day 3 - The Flooded City Workbench
11:05 13. Seattle Day 3 - The Flooded City Workbench No.2
12:50 14. Seattle Day 1 - On Foot Workbench
14:29 15. Seattle Day 1 - The Forward Base Workbench
15:18 16. Seattle Day 1 - Hostile Territory Workbench
17:08 17. Seattle Day 1 - The Forest
17:37 18. Seattle Day 1 - The Coast
18:05 19. Seattle Day 2 - The Shortcut
19:10 20. Seattle Day 2 - The Shortcut Workbench No.2
19:48 21. Seattle Day 2 - Ground Zero
22:12 22. Seattle Day 3 - The Island
22:46 23. Seattle Day 3 - The Escape Workbench
23:46 24. Santa Barbara - Pushing Inland
24:56 25. Santa Barbara - The Resort Workbench