Donner Summit Poster State Park When Grosvenor finally visited Utah

When Grosvenor finally visited Utah in 1932

The towering peaks are complemented by beautiful blue-green waters that invite all to linger

and the only national park to host its travellers

including the construction of unique picnic pavilions designed by architect Lyle E

Donner Summit Poster State Park When Grosvenor finally visited UtahProduct Details 14 x 22 poster Interpretive Copy Said to have eliminated for all time the terrors of the Donner grade, Rainbow Bridge facilitated better passage over the Sierra Nevadas. Before the bridge and connecting highway were built, 18% grades plagued motorists who braved this steep stretch of the Lincoln Highway. When it opened to traffic in 1926, the bridge ushered in a new era of smooth travel over what became California US Highway 40.