The Lake Pontchartrain Causeway, sometimes only The Causeway, is a fixed link composed of two parallel bridges crossing Lake Pontchartrain in southern Louisiana, United States. The longer of the two bridges is 23.83 miles (38.35 km) long. The southern terminus of the causeway is in Metairie, Louisiana, a suburb of New Orleans. The northern terminus is at Mandeville, Louisiana.
The Robert Moses Causeway is an 8.10-mile-long (13.04 km) parkway in Suffolk County, New York, in the United States. The parkway, originally known as the Captree Causeway, connects West Islip on Long Island to the barrier beach islands, such as Captree Island, Jones Beach Island, and the western tip of Fire Island, to the south. It is designated New York State Route 908J (NY 908J), an unsigned reference route. Except south of NY 27A, the road, like most parkways in New York State, is limited to non-commercial traffic.
The King Fahd Causeway is a series of bridges and causeways connecting Saudi Arabia and Bahrain. At 25 km., the western terminus of the causeway is the al-Khour neighbourhood of Khobar, Saudi Arabia and the eastern terminus is Al Jasra, Bahrain.
The Sanibel Causeway is a causeway in Southwest Florida that spans the San Carlos Bay, connecting Sanibel Island with the Florida mainland in Punta Rassa. The causeway consists of three separate two-lane bridge spans, and two-man-made causeway islands between them. The entire causeway facility is owned by Lee County and operated by the Lee County Department of Transportation. The entire causeway is three miles long from end to end, and currently has a $6 toll in effect for island-bound vehicles only. The bridges are not individually named, and are simply referred to as bridges A, B, and C. The islands are also named A and B. Both series begin from the mainland side.
The Eau Gallie Causeway connects Eau Gallie, Florida, with SR A1A near Indian Harbour Beach, across the Indian River Lagoon. Located entirely within the Melbourne city limits, the causeway consists of a main bridge crossing over the Intracoastal Waterway and a relief bridge. The bridge is a key link in SR 518, Eau Gallie Boulevard, of which the causeway is a part.
The Pinellas Bayway System is a series of bridges on two state roads in Pinellas County, Florida. It is a toll road complex maintained and operated by the Florida Department of Transportation. It also is compatible with the SunPass ETC system currently in use on all other FDOT-owned toll roads. The Pinellas Bayway consists of:
Treasure Island Causeway is a series of three bridges crossing Boca Ciega Bay between Treasure Island and St. Petersburg in Pinellas County, Florida. The bridge, which carries County Road 150 (CR 150), is owned and maintained by the City of Treasure Island, which used to charge all motorists $1.00 toll, until June, 2006, when the first span of the bridge was reopened with no toll booth. Residents of two St. Petersburg waterfront communities used to pay a $10 annual road tax to the City of Treasure Island to help support road and median maintenance. That tax was eliminated in the spring of 2007. Treasure Island's ownership of the causeway in St. Petersburg was part of a land agreement entered into when these two cities were born: St. Petersburg's founding fathers purchased the Municipal Beach on the shores of the neighboring Gulf of Mexico community, Treasure Island, outside its own city limits to ensure that residents would have direct access to the Gulf of Mexico for generations to come. The western terminus is an intersection with Gulf of Mexico Boulevard in Treasure Island.
Locally known as Gulf Boulevard and Blind Pass Road, State Road 699 is a 15-mile-long road running the length of the Pinellas County barrier islands in the Gulf of Mexico and serving the popular beaches near St. Petersburg, Clearwater, and Largo. The southern terminus of SR 699 is at the extreme western end of Pinellas Bayway in St. Pete Beach; the northern terminus is the extreme western end of SR 688 in Indian Rocks Beach. State Road 699 is the closest Gulf Coast analog to SR A1A on the Atlantic coast of Florida: indeed, the southernmost two miles (3 km) of SR 699 are part of a loop that Florida Department of Transportation designated as A19A.
The Clearwater Memorial Causeway is a four-lane road between downtown Clearwater and Clearwater Beach, Florida, and includes a fixed-span bridge across the Intracoastal Waterway. It carries the State Road 60 designation and is known for its greenways and pedestrian walkways and elegant bridge appearance and structure. The road is also a major evacuation route during hurricane season.
State Road 666 (SR 666) is a short state road in Pinellas County. Locally known as Tom Stuart Causeway, Welch Causeway, or Madeira Beach Causeway, the route crosses Boca Ciega Bay from Seminole to Madeira Beach. The bridge crossing Boca Ciega Bay is a bascule bridge with 11 spans, built in 1962. The route ends with an interchange with U.S. Route 19 Alternate in Bay Pines. The southwestern terminus of the route is at State Road 699 in Madeira Beach, in front of the Ocean Sands hotel.
The Matanzas Pass Bridge is a bridge located in Fort Myers Beach, Florida. It carries State Road 865 between the Florida mainland and Estero Island, which is a major tourist destination. The bridge is one of the island's two connections to the mainland. The other is the Bonita Beach Causeway on the south end of the island.
The George & Cynthia Mitchell Memorial Causeway is a set of causeways in Galveston, Texas, United States. Two of the routes carry the southbound and northbound traffic of Interstate 45, while the original causeway is restricted to rail traffic. It is the main roadway access point to Galveston Island. The second access point is Bolivar Ferry.
The Bridge of the Horns is a proposed construction project to build a bridge between the coasts of Djibouti and Yemen, across the Bab-el-Mandeb, between the Red Sea and Gulf of Aden. It would be constructed by Al Noor Holding Investment. In 2010, it was announced that Phase I had been delayed. In 2015, civil war broke out again in Yemen. As of July 2020, nothing more has been heard of the project.
Seedamm is the partially artificial causeway and bridge at the most narrow area of Lake Zurich, between Hurden (SZ) and Rapperswil (SG). The Seedamm carries a road and a railway across the lake, with the railway being used by the S5 and S40 lines of the S-Bahn Zürich and by the Südostbahn Voralpen Express.
The Boca Grande Causeway is a causeway located in Charlotte County, Florida connecting the community of Boca Grande on Gasparilla Island with the mainland near Placida. The 2.5 mile causeway crosses Gasparilla Sound and consists of three bridges, and is the only vehicular access to the island.
The Park Boulevard Bridge is a double-leaf bascule bridge that crosses the Narrows, part of the Gulf Intracoastal Waterway, connecting the barrier islands of Indian Shores and the mainland of Seminole, Florida. The bridge carries Park Boulevard, part of CR 694. The bridge was built in 1981. It had a toll, but ten years later, the tolls were removed.
The Indian Rocks Causeway is a twin-span double-leaf bascule bridge that crosses the Narrows, part of the Gulf Intracoastal Waterway, connecting the barrier islands of Indian Rocks Beach and the mainland of Seminole, Florida. The bridge carries Walsingham Road, part of SR 688. The eastbound span of the Indian Rocks Causeway was built in 1958, replacing the original swing bridge built in 1916, and the westbound span was built in 1999.
The Belleair Causeway is a concrete girder bridge that crosses the Intracoastal Waterway, connecting the barrier islands of Belleair Beach and the mainland of Largo, Florida. The bridge carries West Bay Drive, part of CR 416, and was built in 2009, replacing a double-leaf bascule bridge built in 1950.
The Sand Key Bridge is a girder bridge that crosses the Clearwater Pass, connecting Clearwater and Belleair Beach, Florida. The bridge carries Gulf of Mexico Boulevard, part of SR 699, and it was built in 1995, replacing the original bascule bridge built in the 1960s.
The Dunedin Causeway is a series of three bridges that cross the St. Joseph Sound, part of the Gulf Intracoastal Waterway, connecting the barrier islands of Honeymoon Island State Park and the mainland of Dunedin, Florida. The causeway carries CR 586 and it was built in 1963.
SR 693 
