Complex sentence: At the intersection with Delaware Route 48, the one-way pairing changes to Walnut Street northbound and King Street southbound, which continue through the length of downtown Wilmington to just south of the Brandywine Creek.
Split into simpler sentences: At the intersection with Delaware Route 48, the one-way pairing changes to Walnut Street northbound and King Street southbound. This one-way pair continues through the length of downtown Wilmington to just south of the Brandywine Creek.