0.5 miles, 1 hour or less
This short walk brings you up to and then across the Mountain Quarries RailRoad Bridge, which was the longest concrete arch railroad bridge in the world when it was built in 1912. Enjoy great views of the Middle Fork American River Canyon and marvel at what was a fantastic feat of construction for its time.
The triple span bridge was built by the Mountain Quarries Company and the Pacific Portland Cement Company for the purpose of hauling limestone from the nearby quarry to Auburn, 7 miles away. Trains ran across the bridge down to the quarry 4 times daily until the quarry was abandoned. In 1942 the tracks were pulled out for scrap metal for WWII.
You might also hear the bridge called the "No Hands Bridge". This is a throwback from the early years of the Tevis Cup Trail Ride, an equestrian race that goes from Squaw Valley in Tahoe to Auburn. Challenged by onlookers who noted the bridge's former lack of guard-rails, one of the riders, Ina Robinson, would drop her reins and go across "No-Hands". The bridge now does have metal guard rails, but the name has stuck with it.