Longest bridges in the USA

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Did you know that 4 of the top 5 longest bridges in the USA are found in the state of Louisiana? The following are the longest bridges in the USA:

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The top 5 longest bridges in the USA

1. Lake Pontchartrain Causeway, Louisiana

Lake Pontchartrain Causeway, the longest bridge in the USA

The Lake Pontchartrain Causeway, or the Causeway, is considered to be the longest bridge in the United States and the longest bridge in the world over water (continuous). It consists of two parallel bridges crossing Lake Pontchartrain in southern Louisiana, United States. The length of the two bridges is 38.35 km long. There was some controversy with Guinness over the title of the longest bridge over water. For over 10 years, Lake Pontchartrain Causeway was listed in the book as being the longest bridge over water.

The original causeway construction began in 1955, and the first span opened to traffic in 1956. Due to the increasing traffic demands, the second parallel span was added, and it opened in 1969. The causeway was constructed using a series of precast concrete segments.

2. Manchac Swamp Bridge, Louisiana

The Manchac Swamp Bridge is a twin concrete trestle bridge in the US state of Louisiana. The 36.7km bridge is located around Lake Pontchartrain, a lake well known for its incredibly long bridges. Although the bridge is totally safe to drive on, Louisiana legend says that the bridge is haunted by a Cajun werewolf known as a “Rougarou” and a voodoo princess. However, despite these spooky tales, the only thing that drivers should be cautious of is not to get too close to the alligators that make a home on the waters under the bridge.

Construction of the bridge began in 1976 and was completed in 1979.

Manchac Swamp Bridge, one of the longest bridges in the USA

3. Atchafalaya Basin Bridge, Louisiana

Carrying Interstate 10, this is a couple of bridges stretching for more than 29km. Opened in 1973 it links Lafayette and Baton Rouge with its length. As the name suggests, this is constructed over the most significant wetland of the country, the Atchafalaya Basin.

The Atchafalaya Basin Bridge is a prestressed concrete bridge with a box-girder design. It is supported by numerous piers and foundations that are strategically placed throughout the basin. The bridge’s elevation allows for boat traffic to pass underneath, and it includes a navigation channel for larger vessels.

4. Chesapeake Bay Bridge-Tunnel, Virginia

It is officially known as the Lucius J. Kellam Jr. Bridge-Tunnel, this 37km long bridge, is a famous travelling destination, crossing the Chesapeake Bay. The northbound bridge opened in 1964 while the southbound in 1999. While the southern part of the bridge is close to Norfolk Botanical Garden, Atlantic Wildfowl Heritage Museum, and First Landing State Park, the northern part gives easy access to Eastern Shore National Wildlife Refuge and Kiptopeke State Park. Presently the bridge is under the supervision of the Chesapeake Bay Bridge and Tunnel Commission.

The bridge-tunnel consists of several sections, including two 1-mile (1.6-kilometre) long tunnels that go beneath the bay’s shipping channels and four artificial islands that serve as transition points between the bridges and tunnels.

5. Bonnet Carré Spillway Bridge, Louisiana

The I-10 Bonnet Carré Spillway Bridge is a 17.70 km-long twin trestle bridge in Louisiana, USA. The bridge carries Interstate I-10 over the Bonnet Carré Spillway – a flood control setup in the Lower Mississippi Valley, Lake Pontchartrain, and LaBranche Wetlands and a portion of St. John the Baptist Parishes. The I-10 Bonnet Carré Spillway Bridge was opened in 1972.