Note: The recent collapse of the Francis Scott Key Bridge has necessitated urgent assessments to ensure the safety of shipping traffic, and started the procedure of how to replace the bridge. Updates on the situation are forthcoming from transportation authorities.

The Francis Scott Key Bridge was named in honor of the creator of the Star Spangled Banner. It was inaugurated in March 1977, marking a significant milestone in Baltimore's transportation infrastructure. Spanning across the Patapsco River, it stood as the farthest of Baltimore's Harbor's three toll crossings. The bridge's construction, along with its approaches, represented the final sections of Interstate 695, also known as the Baltimore Beltway.

Originally conceived as a solution to alleviate congestion at the Baltimore Harbor Tunnel, the need for a second harbor crossing became apparent as traffic continued to grow. Plans for a single-tube tunnel were initially drafted by the State Roads Commission, precursor to the Maryland Transportation Authority. However, escalating cost projections led officials to explore alternative options, ultimately leading to the decision to construct a bridge.

With an estimated cost of $110 million, the Francis Scott Key Bridge emerged as the most viable solution, offering more traffic lanes and a more cost-effective maintenance model compared to a tunnel. Additionally, the bridge provided a crucial route for vehicles transporting hazardous materials across the Baltimore Harbor.

Construction on the Francis Scott Key Bridge commenced in 1972, and on March 23, 1977, it officially opened to traffic, spanning a total length of 10.9 miles, including its connected approaches. Notable features along the route include a dual-span drawbridge over Curtis Creek and parallel bridges crossing Bear Creek near the Sparrows Point factory of Bethlehem Steel.

Steeped in American history, the area surrounding the Francis Scott Key Bridge holds significant cultural significance. It is believed to be near the spot where Francis Scott Key witnessed the bombardment of Fort McHenry on September 12, 1814, inspiring him to pen the lyrics to the Star Spangled Banner. Additionally, the remnants of Fort Carroll, a man-made island named after Charles Carroll of Carrollton, a signer of the Declaration of Independence and constructed by Robert E. Lee, lie southeast of the bridge.

As a vital component of Baltimore's Harbor crossings, the Francis Scott Key Bridge was a pivotal role in facilitating secure and efficient transportation for regional and interstate traffic, alongside the Fort McHenry and Baltimore Harbor Tunnels.