Complex sentence: Roebling's Delaware Aqueduct, built by John A. Roebling, famed engineer behind the Brooklyn Bridge, was constructed in 1848 as part of the canal, and is now preserved by the National Park Service.
Split into simpler sentences: Roebling's Delaware Aqueduct, built by John A. Roebling, famed engineer of the Brooklyn Bridge, was constructed in 1848 as part of the canal. It is now preserved by the National Park Service.