Complex sentence: SR 509 continues north onto Marine View Drive through the city of Normandy Park and into SeaTac, where it turns southeast onto Amabaum Boulevard and Des Moines Memorial Drive to a trumpet interchange, the southern terminus of a limited-access freeway section of SR 509.
Split into simpler sentences: SR 509 continues north onto Marine View Drive through the city of Normandy Park and into SeaTac. The highway turns southeast onto Amabaum Boulevard and Des Moines Memorial Drive to a trumpet interchange, the southern terminus of a limited-access freeway section of SR 509.