12 Longest Bridges in the US [Ranked 2024]

Longest Bridges in the US

Many bridges in America come with remarkable history about how they were designed and evolved, and every day, millions of people cross thousands of bridges across the United States without giving any thought to their aesthetic value or the significance of the experience.

However, some of these bridges are a lot longer than your usual cross-city bridge. So, here is a list of the longest bridges in the US.

1. Lake Pontchartrain Causeway – 23.83 miles

The Lake Pontchartrain Causeway is the longest bridge in the US which is located in southern Louisiana. This bridge consists of two parallel bridges and also know as The Causeway.

The length of both bridges is 23.83 miles long. Since 1969, has been registered Lake Pontchartrain Bridge in the Guinness Book of Records is one of the longest bridges over water globally. The Lake Pontchartrain Bridge subsequently became the longest (sustainable) overwater bridge. At the same time, the Qingdao Haiyuan Bridge became the longest overwater bridge.

The two bridges were supported by nine thousand and five hundred concrete columns. The two bridges feature a movable feature that extends across the navigation channel 8 miles (13 km) from the south of the northern shore. The South End of the Bridge is located in Metairie, Louisiana, a suburb of New Orleans. The bridge’s north station is in Mandeville, Louisiana.

2. Manchac Swamp Bridge – 23 miles

The Manchac Swamp Bridge is a twin compact stand bridge in Louisiana. The total length is 23 miles (37 km) and is one of the longest bridges globally over water and also the longest bridge on the interstate highway system. Some claim that it is the longest freeway bridge in the world.

The bridge carries Interstate 55 and U.S. Route 51 over the Manchac Swamp in Louisiana and accounts for a third of the approximately 66-mile highway in Louisiana. Inaugurated in 1979, its biography Crossed 250 feet (76 meters) under the swamp, and the expanse cost $7 million per mile. 

3. Chesapeake Bay Bridge-Tunnel – 23 miles

The Chesapeake Bay Bridge is a bridge length of 23 miles (37 km) is located at the mouth of the Chesapeake Bay connects the Delmarva Peninsula in the eastern state of Virginia with Virginia Beach Urban Rally Woods Hampton, Virginia.

The Chesapeake Bridge connects the east coast of Virginia with Virginia’s mainland Virginia Beach near Norfolk. It is a modern engineering wonder, a tourist attraction, and travel convenience. It is truly a fantastic experience to travel across a bridge-tunnel. There is a full-service restaurant, Chesapeake Grill, with restrooms and a gift shop on the bridge.

You might also like to read about these highest bridges in the US.

4. Atchafalaya Basin Bridge – 18.2 miles

The Atchafalaya Basin Bridge is two parallel bridges in the U.S. state of Louisiana between Baton Rouge and Lafayette that carry Highway 10 over the Atchafalaya Basin. It is the 14th longest bridge globally, with a length of 99,099 feet (29,299 meters) or 18.2 miles.

The bridge includes two exits: one leads to Whiskey Bay (LA 975), and the other leads to La Rose Homes (LA 3177). While the two bridges run parallel for most of their length, they join when crossing the Pilot Canal at Whiskey Bay.

5. Bonnet Carre Spillway Bridge – 11 miles

The I-10 Bonnet Carré Spillway Bridge is a twin carrier concrete bridge in the U.S. state of Louisiana. With a total length of 17,702 meters or 58,077 feet, it is one of the longest bridges in the world.

The bridge carries the Lake Pontchartrain, Bonnet Carré Spillway, and LaBranche Wetlands inland. This bridge was commissioned in 972. It was built by the largest technology bridge.

6. Louisiana Highway 1 Bridge – 8.26 miles

Louisiana Highway 1 (Los Angeles 1) is a state highway in Louisiana. At 431.88 miles (695.04 km) long, it is the longest numbered highway of any class in Louisiana.

It operates diagonally across the state, linking oil and gas fields near Grand Isle with the state’s northwestern corner, north of Shreveport. The southern part of the United States rapid 90 near Russland is corridor 44, a road system National Highway corridor is a high priority.

Check out these scariest bridges in the US.

7. Jubilee Parkway – 8 miles

Jubilee Parkway is located in Baldwin County, Alabama, USA. The original name is America’s Junior Miss Bayway, and it crosses Mobile Bay. Jubilee Parkway is a concrete viaduct on Alabama Interstate 10. It has a cumulative length of 8 miles (12.9 km) and consists of 2 side-by-side bridges, each with two lanes for a total of 4 lanes.

The Parkway was formed in 1978 and crossed the northern portion of Mobile Bay, running approximately parallel to the nearby Battleship Parkway, with which it has an intersection.

8. San Mateo–Hayward Bridge – 7 miles

The San Mateo Hayward Bridge is a bridge that crosses the San Francisco Bay of California in the United States and connects the San Francisco Peninsula with the Eastern Gulf. It is the longest bridge in California and the 25th longest bridge in the world by length.

This bridge is well managed by the State Highway Agency and the Department of Transportation, California. It is also a part of State Highway 92 (92 SAR) with its western terminal in Half Moon City, a significant part of a building on the Pacific coast. It links Interstate 880 (I-880) in the East Bay with U.S. Route 101 (US 101) on the peninsula. 

9. Seven Mile Bridge – 6.7 miles

The Seven Mile Bridge is situated in Monroe County, Florida, USA. The Knight’s Key (part of Marathon City, Florida) in the Middle Keys connects to the Little Duckling Key in the Lower Keys.

Among the longest bridges in existence when built, it is part of the Overseas Highway in Keys, part of the 2,369-mile (3,813 km) U.S. Highway 1. There are two bridges at this site. The modern bridge is open to vehicle traffic, older one only for walkers and cyclists. 

10. General W.K. Wilson Jr. Bridge – 6.08 miles

The General W.K. Wilson Junior Bridge, known locally as the “Dolly Parton Bridge, “consists of twin parallels restricted by arches of weathered steel and girder bridges of concrete that form a single continuous stretch carrying four lanes Interstate 65 through the Mobile Delta River Tenso northeast of We. Mobile City, Alabama.

Built from 1978 to 1980, it stretches 6.08 miles (10 km) over the delta, making it along with the Jubilee Parkway next to Mobile Bay to the south of the longest bridges in the country. It was named after Walter K. Wilson, Chief Engineer with U.S. Army Corps of Engineers and a longtime resident of Mobile Richmond–San Rafael Bridge

11. The Richmond-San Rafael Bridge – 5.5 miles

The Richmond-San Rafael Bridge connects the San Francisco Bay East-West Crossing in California to the west end of the San Rafael East Richmond Association.

In 1955, the 5.5-mile-long bridge was constructed for social services. It was probably served as the longest augmentation on the planet. The name of its authority is John F. McCarthy. 

12. Frank Davis “Naturally N’Awlins” Memorial Bridge – 5 miles

It involves the I-10 Twin Span Bridge, which is around 5 miles in length and is officially known as an extension Frank Davis commemoration, “Normally N’Awlins,” of two equal scaffolds. These equal scaffolds cross the eastern finish of Lake Pontchartrain in southern Louisiana from New Orleans to Slidell.

The current extensions were developed in the second 50% of the principal decade of the twenty-first century after Hurricane Katrina seriously harmed the first scaffolds on August 29, 2005. The primary expansion of eastward traffic opened on July 9, 2009. On April 7, 2010, it was finished.

Bridges are critical factors for combining people, transporting goods, and advancing the economy. However, driving over some bridges is a truly unforgettable adventure. Effortlessly combining design and function, these beautiful American bridges continue to teach and inspire.

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