Mapa de la Autopista MacArthur Causeway, Ciudad de Miami

La General Douglas MacArthur Causeway es una calzada de seis carriles que une el Downtown de Miami con South Beach, en la ciudad de Miami, condado de Miami-Dade, estado de Florida, Estados Unidos, cruzando la bahía Vizcaína y extendiéndose unos 5,6 kilómetros (3,5 millas) con un gálibo de unos 21 metros (68 pies) . Su historia arranca en 1917 cuando comenzó la construcción para reemplazar al deteriorado Collins Bridge de madera, entonces la única conexión terrestre entre el continente y las islas barrera; la vía, inaugurada como County Causeway el 17 de febrero de 1920, fue levantada sobre rellenos que también dieron forma a Watson Island hacia 1926 . Tras sucesivas ampliaciones estructurales y de carriles, en 1942 la Junta de Carreteras del Estado y la Comisión del Condado de Dade la renombraron en honor al general de la Segunda Guerra Mundial Douglas MacArthur . Hoy la calzada lleva las rutas estatales SR 836 y SR A1A y conecta además con la Interestatal 395, que termina en Fountain Street frente a Palm Island, y sirve como único acceso vial a Watson Island y a los exclusivos barrios insulares de Palm Island, Hibiscus Island y Star Island . En los años setenta se completó el enlace directo con la I-395 y en la década de 1990 se reemplazaron los tramos extremos, quedando los carriles en dirección este listos en 1995 y los del oeste en 1997 . La infraestructura, mantenida por el FDOT, combina tramos de pedraplén y puentes de vigas y destaca por sus vistas del skyline, el Puerto de Miami y los cruceros, siendo protagonista habitual de postales, avisos de tráfico y recorridos turísticos que celebran su papel como arteria vital entre la ciudad y la playa .
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