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On This Day | September 23

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2013
Bali Mandara Toll Road opened

Located in Bali, Indonesia, Bali Mandara Toll Road or Nusa Dua-Ngurah Rai-Benoa Toll Road is a toll road carried by a bridge stretching across the Gulf of Benoa. The 12.7-kilometre (7.9 mi) highway connects the city of Denpasar and South Kuta, Badung Regency, Nusa Dua and Ngurah Rai International Airport. It cost Rp 2.48 Trillion (USD 220 million) to construct and was intended to prevent traffic jams on the Ngurah Rai Bypass Road, previously the only road connecting areas of Bali on opposite sites of the airport. The Ngurah Rai Bypass Road, a land-based route, could not be widened because of the location of the airport runway; the new toll road was instead constructed over water.

1973
Dallas Fort Worth International Airport opened

Dallas/Fort Worth International Airport, also known as DFW Airport or simply DFW, is the primary international airport serving the Dallas-Fort Worth metroplex and the North Texas Region in the U.S. state of Texas. At 17,207 acres (6,963 hectares; 27 square miles), DFW is the second-largest airport by land area in the United States after Denver International Airport. DFW Airport has service to 260 destinations (193 domestic + 67 international) from 28 scheduled airlines. In surpassing 200 destinations, DFW joined a small group of airports worldwide with that distinction. In April 2023, DFW Airport was ranked as the second-busiest airport in the world with 73.3 million passengers in 2022.

1893
Thomas Hawksley died

Thomas Hawksley was an English civil engineer of the 19th century, particularly associated with early water supply and coal gas engineering projects. Hawksley was, with John Frederick Bateman, the leading British water engineer of the nineteenth century and was personally responsible for upwards of 150 water-supply schemes, in the British Isles and overseas.

1843
Emily Warren Roebling was born

Emily Warren Roebling was an engineer known for her contributions over a period of more than 10 years to the completion of the Brooklyn Bridge after her husband Washington Roebling developed caisson disease (a.k.a. decompression disease) and became bedridden. She served as a liaison and supervisor of construction through communicating between her husband and on-site personnel. Her husband was the chief engineer during construction of the Brooklyn Bridge, which had been designed by his late father, John A. Roebling.

1825
Jacob Hays Linville was born

Jacob Hayes Linville was an American Civil Engineer. He was one of the most prolific bridge builders of the period from 1860 to 1880.

1756
John Loudon McAdam was born

John Loudon McAdam was a Scottish civil engineer and road-builder. He invented a new process, "macadamisation", for building roads with a smooth hard surface, using controlled materials of mixed particle size and predetermined structure, that would be more durable and less muddy than soil-based tracks. Modern road construction still reflects McAdam's influence. Of subsequent improvements, the most significant was the introduction of tar (originally coal tar) to bind the road surface's stones together, "tarmac" (for Tar Macadam.)

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