I'll take a crack at this

1. SB at Mill St crossing Ridgefield, WA

2. SB between Vader and Olequa. Scene starts coming off the Olequa creek bridge and you can see the old LPN grade at right near end of scene.

3. SB Cowlitz River Bridge.

4. SB across the Lewis River Bridge looking east, with Mount St Helens above the trees.

5. Hard to say, thinking it might be between Vader and Winlock.

6. Seems familiar, but I can't place it.

7. SB around MP 83 between the Cowlitz River and the Toutle River.

8. This scene is really two scenes. Start off NB approaching the Nisqually River bridge and ends on the bridge. Second part starts off just leaving the bridge over the NB lanes of I-5 and coming up to the bridge over the SB lanes.

9. NB (looking south) just before Castle Rock.

9b Just After the Kelso Stuff. SB along I-5 between Kalama and Woodland (future SB lanes of I-5 would be on the opposite side of tracks)

10 SB just south of Woodland. UP GP20 on UP NB freight.

11. SB across the Kalama River (future grain terminal will be on the right)

12. SB at MP 113 crossovers just south of Kalama.

13. SB at Vancouver Jct. Lakeshore Ave bridge ahead.