Complex sentence: Traffic from SR-58 can access eastbound I-80 or turn off to Frontage Road, however to access westbound I-80, travelers must continue eastbound until the next exit, and turn around.
Split into simpler sentences: Traffic from SR-58 can access eastbound I-80 or turn off to Frontage Road. However to access westbound I-80, travelers must continue eastbound until the next exit, and turn around.