Railroad photograph
Photo by: Kevin Morgan
The morning Zephyr climbs the north edge of Big Ten Curve, running about two hours late. UP's service road that runs parallel to the track is in very good condition right now, after UP brought quite a bit of heavy equipment up here a little over a month ago for a re-enforcement / construction project on Big Ten.
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Tuesday, July 08, 2025 at 11:13:40
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 81

Paint Scheme
Amtrak Phase 5b
Symbol
AMT5-07
Train Type
California Zephyr (Amtrak)


Photo Information
Camera Make/Model
DJI / Mavic 3 Pro [FC4370]
ISO
110
Flash
Did Not Fire

Focal Length
166 mm
Shutter
1/500 seconds
Aperture
f/3.4