Owing to its position along the North Shore coastline, the Newburyport/Rockport Line has a large number of river crossings, including movable bridges over the Saugus River and Danvers River on the mainline as well as Days Creek and the Annisquam River on the Rockport Branch. Draw Number 7 over the Mystic River between Somerville and Everett, built in 1877, was the oldest horizontally folding drawbridge in the country until it was replaced by a fixed high-level concrete span on August 26, 1989. The new $34.2 million bridge, which was completed nine months ahead of schedule, eliminated the speed restriction on the old bridge.