Complex sentence: State Route 13 in the U.S. state of California is a short loop in Alameda County currently built from Interstate 580 in Oakland to Interstate 80/Interstate 580 in Berkeley.
Split into simpler sentences: State Route 13 (SR 13) is a state highway in the U.S. state of California. It is a short loop in Alameda County currently built from Interstate 580 in Oakland to Interstate 80/Interstate 580 in Berkeley.