Big Fill Walk

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Walk Through History

During the first months of 1869, the valley to the east of the Promontory Mountains was filled with construction camps of the Union Pacific and Central Pacific Railroads. Many of these camps became short-lived "Hell-on- Wheels" towns with names like Deadfall, Last Chance, and Junction City. Today, virtually nothing remains of these construction camps, however, the workers' legacy of a hand built railroad has been preserved.

 Not since tunneling through the Sierra Nevada Mountains had the Central Pacific confronted such hard work. Likewise, the eastern approach to the Promontory Mountains was some of the most difficult construction faced by the Union Pacific crews.

 Workers encountered tough limestone rock, through which several large cuts had to be blasted. Crews also faced deep ravines that had to be filled or bridged. Because of the great railroad construction race across Utah, the eastern slope of the Promontory Mountains became one of the steepest grades on the entire transcontinental route. In addition to the cuts, fills, trestles, and steep grades, this route also featured several extremely sharp curves.

 Hiking the 1 1/2 mile loop trail will allow you to see first-hand some of the railroad's most difficult hand-hewn achievements, including the Central Pacific's Big Fill and the site of the Union Pacific's Big Trestle.


 
Sights along the Big Fill Walk


Orange Special Wayside
Orange Special Wreck

Cut along Big Fill Walk
Cut


Panoramic Viewpoints

Big Fill from the North
Big Fill

1869 Photo of the Big Trestle
Big Trestle

1869 hand drill mark
Drill Mark