Complex sentence: The route has an interchange with Route 3 at, with access to eastbound Route 3 and U.S. Route 1/9 for traffic in the eastbound direction and to westbound Route 3 in the westbound direction.
Split into simpler sentences: The route has an interchange with Route 3 at. This interchange provides access to eastbound Route 3 and U.S. Route 1/9 for traffic in the eastbound direction and to westbound Route 3 in the westbound direction.