The great race begins
The muscle behind the mountain
Engineering the impossible
The golden spike and its aftermath
YOUR GOAL
Master of How iron rails and steam engines united America
olivia_learns Model builders construct miniature bridges using ordinary wooden toothpicks
olivia_learns Engineering the Impossible
We drilled into the granite, we blasted through the stone, now the trains can roll!
olivia_learns Central Pacific Railroad workers used deadly nitroglycerin to blast Summit Tunnel.
olivia_learns Massive wooden sheds cover the railroad tracks, acting as tunnels through the snow.
olivia_learns A precise vector diagram shows the Dale Creek Trestle modeled with wooden toothpicks.
olivia_learns Stitch the tracks across the map to discover how the transcontinental railroad united America.
Wyoming's wind hazard: The Dale Creek Trestle was so flexible that strong winds could actually blow empty train cars off the tracks.
How many standard time zones did the railroads create in North America in 1883?
What material was used to build the original, highly flexible Dale Creek Trestle?
What was the name of the notoriously high and shaky wooden bridge built in Wyoming?
Which highly volatile explosive was manufactured on-site to blast the Central Pacific's Summit Tunnel?
In what year did North American railroads officially adopt standard time zones?
How fast were trains allowed to travel when crossing the wooden Dale Creek Trestle?
How did communities keep time before the railroads introduced standardized time zones?