Complex sentence: In 1905, the Forest Service was first created and began overseeing Sabino Canyon and during the Great Depression, the bridges over Sabino Creek and the Sabino Dam were constructed by the Works Progress Administration (WPA) and Civilian Conservation Corporation (CCC).
Split into simpler sentences: In 1905, the U.S. Forest Service was first created and began overseeing Sabino Canyon. During the Great Depression, the bridges over Sabino Creek and the Sabino Dam were constructed by the Works Progress Administration (WPA) and Civilian Conservation Corps (CCC).