Complex sentence: Tuolumne Meadows Lodge and Tioga Pass Road, along with campgrounds at Tenaya and Merced lakes, were completed the same year; six hundred automobiles entered the east side of the park using Tioga Road that summer.
Split into simpler sentences: Tuolumne Meadows Lodge and Tioga Pass Road, along with campgrounds at Tenaya and Merced lakes, were completed the same year. Six hundred automobiles entered the east side of the park using Tioga Road that summer.