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Hatch Mott MacDonald was founded in 1996 by its parent companies, Hatch Ltd and Mott MacDonald. [2] HMM was intended to take advantage of engineering opportunities in North America. HMM originally provided the bulk of its services in transportation, including the design of tunnels, rail systems, bridges, highways, and airport infrastructure.
Mott MacDonald was formed in 1989 through the merger of Mott, Hay and Anderson and Sir M MacDonald & Partners. [4] Mott, Hay and Anderson was a transportation engineering consultancy responsible for projects such as the London Underground [5] while Sir M MacDonald & Partners was a water engineering consultancy with projects that included the Aswan Dam. [4]
The ART was designed and built between 1999 and 2004 by a team of engineers from the BAA (the tunnel's owner), Amec, Laing O'Rourke, Morgan Est-Vinci and Mott MacDonald. The bored tunnels have internal diameter of 8.1 metres (27 ft) and were driven by a 9.16-metre (30 ft 1 in) diameter Herrenknecht earth pressure balance tunnel boring machine.
The company was founded as a private partnership between Basil Mott and David Hay on 30 July 1902. Prior to forming the partnership both had spent time building London tube railways and Hay had worked on the Blackwall Tunnel, so it was no surprise that they concentrated on heavy civil engineering projects such as bridges, tunnels, railways and docks.
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The Broadway Tunnel was a tunnel under Fort Moore Hill in Downtown Los Angeles, California.It extended North Broadway (formerly Fort Street), at Sand Street (later California Street), one block north of Temple Street, northeast to the intersection of Bellevue Avenue (later Sunset Boulevard, now Cesar Chavez Avenue), to Buena Vista Street (now North Broadway).
The Regional Connector Transit Project constructed a 1.9-mile (3.1 km) light rail tunnel for the Los Angeles Metro Rail system in Downtown Los Angeles.It connected the A and E lines with the former L Line.
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