Eads Bridge is a 6,442 feet or 1,964 m road and railway bridge that crosses the Mississippi River and connects St. Louis, Missouri and St. Louis, Illinois. Named after its designer, James B. Eads, it was completed in 1874 and has always been one of the iconic structures of St. Louis.

The construction of the bridge has not been without any controversies. Being the very first to use pneumatic caissons, which were among the deepest sunk caissons in the history, it was deemed responsible for the outbreak of the decompression sickness, afflicting almost a hundred workers.

Aside from this, the original design also suffered from major revamps, when steamboat operators lobbied that the bridge should give ample space for such water vessels to maneuver in comfortably. Back in the days, such restrictions were unheard of, making the whole construction even more historical and notable.

Today, Eads Bridge is still used by the public. It has 4 highway lanes and 2 MetroLink tracks.