Cargo Under the Bridge
Here's a cargo ship going under the Bayonne Bridge (which connects Staten Island and New Jersey). Approximately 10 ships of this size or larger enter New York's ports everyday to unload cargo from across the globe. Each of the larger containers is 40 feet long and ships will hold about 2000 of them.
Due to trade imbalances, over half of the ships will return to their country of origin completely empty. This ship is leaving either empty or with very light cargo, as it is riding very high up on the water. Ships are getting larger and larger and may pose a serious problem if they become too tall to pass under the bridges. The waterway was dredged to make it deeper but the bridges pose a potentially unsolvable issue.