Complex sentence: The route is a major north--south freeway in the southern Providence metropolitan area, directly linking Providence with eastern Washington County, the beaches of Narragansett and South Kingstown, and the city of Newport.
Split into simpler sentences: The route is a major north--south freeway in the southern Providence metropolitan area, directly linking Providence with eastern Washington County. Route 4 is used to access the beaches of Narragansett and South Kingstown, and also serves as a major connection between Providence and the city of Newport.