Although World War II led to the first downward trend in visitation sincec opening day, a massive surge in post-war patronage exacerbated crowd problems beyond any immediately practical solution. The park's infrastructure proved increasingly unable to handle large numbers of guests, approximately 1.6 million of whom visited in 1956 (Buchholtz, 1983).
Automobile ownership rapidly grew after the war and families increasingly used their new vehicles to visit the parks. Annual attendance throughout the entire National Park System doubled in fifteen years from 25 million visitors in 1940 to 50 million in 1955 with no sign of slowing down.
During World War II, Rocky Mountain National Park’s small staff lost fourteen of its twenty-four members to conscription. Following the war, they were slow to adapt to the post-war boom in visitation and car travel (Bzdek, 2010). By 1950, ninety percent of national park guests arrived via automobile. Road upkeep was a perennial challenge even before the war and Rocky Mountain National Park’s antiquated system grew increasingly unable to accommodate the rising numbers of drivers.