Aerial views of Eagle Nest Tunnel and Bridge along Sixteen Mile Creek
Sixteen Mile Creek, Eagle Nest Tunnel & Canyon Aerial Photographs , Sixteen Montana
Aerial photographs of abandoned Milwaukee Road Rail Road along Sixteen Mile Creek & Canyon, Montana 2011
One of the most scenic and visually stunning locations along the Milwaukee Road's Pacific Coast Extension was a rather small, simple deck plate girder bridge and tunnel at a location known as Sixteen, Montana. What became known as Eagle Nest Tunnel, located along the main line between Harlowton and Three Forks, the bridge and tunnel are spectacular for how the entire project was built; the tunnel was cut into a small cliff-face and empties out directly onto the bridge which spans a small creek. With the Milwaukee Road's abandonment of its Extension in 1980 this section of the line lies dormant today and has not seen a train in over 30 years. Above text from the following website:
http://www.american-rails.com/eagle-nest-tunnel.html

The Milwaukee Road Abandoned Pacific Extension Trip