MacArthur Causeway

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MacArthur Causeway

County Causeway
Watson Island.png
The entirety of the causeway, connecting Downtown and South Beach
Coordinates 25°46′40″N80°09′51″W / 25.777711°N 80.164233°W / 25.777711; -80.164233
Carries6 lanes of
Florida 836.svgUS 41.svgFlorida A1A.svg SR 836 / US 41 / SR A1A
Crosses Biscayne Bay
Locale Miami to Miami Beach
Official nameGeneral Douglas MacArthur Causeway
Maintained by FDOT
Design Causeway, beam, girder
Material Slabs, girders, fill
Total length3.5 miles (5.6 km)
Longest span0.4 miles (0.64 km)
Clearance above 68 feet (21 m)
Designer Frederic R. Harris, Inc., American Bridge Company
OpenedFebruary 17, 1920;100 years ago (1920-02-17) [1]
MacArthur Causeway

The General Douglas MacArthur Causeway is a six-lane causeway which connects downtown Miami, Florida to South Beach, Miami Beach via Biscayne Bay.


The highway is the singular roadway connecting the mainland and beaches to Watson Island and the bay neighborhoods of Palm Island, Hibiscus Island, and Star Island. The MacArthur Causeway carries State Road 836 and State Road A1A over the Biscayne Bay via a girder bridge. Interstate 395 ends at Fountain Street, the entrance to Palm Island Park which has a traffic light as well as bus stops.


In the late 1910s, with the deteriorating wooden Collins Bridge (now, the Venetian Causeway) as the only direct land route between mainland Miami and the barrier islands of Miami Beach, construction on the roadway began in 1917. The roadway, dedicated as the County Causeway, was completed in 1920. Watson Island was reclaimed surrounding the western end of the roadway, completed in 1926.

Having undergone several lane and structural expansions following opening of the original two-lane road, the State Road Board and Dade County Commission voted to rename the causeway in honor of World War II General Douglas MacArthur in 1942. [2] The causeway was accessible from mainland Miami via Biscayne Boulevard and intersecting side streets through the 1990s, when replacement of the western- and easternmost spans and construction of direct highway access to I-395 began. The eastbound lanes of the bridges were completed in 1995, and westbound lanes finished in 1997.

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Biscayne Bay Florida lagoon

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Venetian Causeway Bridge in Florida, United States of America

The Venetian Causeway crosses Biscayne Bay between Miami on the mainland and Miami Beach on a barrier island in south Florida. The man-made Venetian Islands and non-bridge portions of the causeway were created by materials which came from the dredging of the bay. The Venetian Causeway follows the original route of the Collins Bridge, a wooden 2.5 mi (4 km) long structure built in 1913 by John S. Collins and Carl G. Fisher which opened up the barrier island for unprecedented growth and development.

Florida State Road 112 (SR 112) is a 9.9-mile-long (15.9 km) east–west state highway connecting Miami International Airport in Miami to Miami Beach in the U.S. state of Florida. Between the airport and Interstate 95, it is locally known as the Airport Expressway, and is an all-electronic toll road between State Road 9 to I-95. Between I-95 and Alton Road (SR 907A) in Miami Beach, SR 112 is signed only as Interstate 195 as it crosses Biscayne Bay by way of the Julia Tuttle Causeway. Between I-195 and its eastern terminus at Collins Avenue (SR A1A), the SR 112 signs are present but infrequent, and the road is locally maintained as Arthur Godfrey Road.

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The Dolphin Expressway is a 15-mile-long (24 km), six-lane, divided controlled-access highway, with the westernmost 14 miles (23 km) as an all electronic tollway signed as State Road 836, and the easternmost 1.292 miles (2.079 km) between Interstate 95 (I-95) and SR A1A cosigned as Interstate 395. The road currently extends from just north of the intersection of Southwest 137th Avenue and U.S. Highway 41 (US 41) in Tamiami, eastward past the Homestead Extension of Florida's Turnpike and Miami International Airport, before intersecting I-95, becoming I-395 and ending at SR A1A in Miami at the west end of the MacArthur Causeway. The Dolphin Expressway is maintained and operated by the Miami-Dade Expressway Authority (MDX), while the I-395 section is maintained by the Florida Department of Transportation (FDOT). The Dolphin Expressway from the Palmetto Expressway to I-95 opened in 1969, with the I-395 section opening in 1971, the extension to the HEFT opening in 1974 and a second western extension opening in 2007.

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Rickenbacker Causeway Bridge in Florida, United States of America

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Palm Island (Miami Beach) Neighborhood of Miami Beach in Miami-Dade County, Florida, United States

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Port Miami Tunnel

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Hibiscus Island Neighborhood of Miami Beach in Miami-Dade County, Florida, United States

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Transportation in South Florida Overview of transportation in South Florida

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  1. Lavender, Abraham (2002). Miami Beach in 1920. Mount Pleasant, SC: Arcadia Publishing. p. 160. ISBN   0-7385-2351-8.
  2. "Causeway Our Thanks for Bataan". The Miami News . April 6, 1964. p. 1A. Retrieved October 20, 2010.

Coordinates: 25°46′40″N80°9′52″W / 25.77778°N 80.16444°W / 25.77778; -80.16444