Photo By: Kevin Morgan

AMTK 51 and AMTK 14 lead the westbound Zephyr by the recent construction site on Big Ten, where Union Pacific spent a few weeks putting new rock down to reinforce the grade here on the north end of Big Ten Curve. Email Questions or Comments to the Webmaster. User Comments (0) No comments posted yet. Click Here to add the first one!

46 views 0 comments Monday, June 09, 2025 at 10:18:59 AM image date Location Information City or County and State Arvada, CO Subdivision Moffat Tunnel (UP) Milepost or Control Point Big Ten Curve (MP 19.5 to MP 20.2) Train Information Railroad Amtrak Model P42DC Primary Unit Number AMTK 51 Paint Scheme Amtrak Phase 5b Symbol AMT5-08 Train Type California Zephyr (Amtrak) Additional Unit Number(s) AMTK 14     Photo Information Camera Make/Model Hasselblad / Mavic 3 / Mavic 3 Pro [L2D-20c] ISO 100 Flash Did Not Fire Focal Length 24 mm Shutter 1/1600 seconds Aperture f/2.8

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