Gallery: How Engineers Are Building a New Railroad Under New York City
Photo: 'Gewitterbild, Kassel, 1984.' Photographic paper exposed by lightening during a thunderstorm. By Floris Neusüss.01fa-tunnel9-f
Workers inspect the “shock tubes” that set off blasting caps, which detonate the charges. More than 2,400 blasts have been conducted on the project. | __Photo: Dean Kaufman__
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This tunnel is under 55th Street and Park Avenue. The yellow material is a waterproof membrane, which goes on before the concrete finish. | __Photo: Dean Kaufman__
Photo: Alex Washburn/Wired03fa-tunnel3-f
During the day, rail cars will wait under Grand Central Terminal until it’s time to take commuters back home to Long Island. | __Photo: Dean Kaufman__
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The concrete floor of the 55th Street ventilation chamber being poured. A total of 10 such areas will circulate air between the tunnels and the surface. | __Photo: Dean Kaufman__
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This shows an access tunnel near 50th Street. These cross-passages (there are 19 total) can be used in emergencies or when repairs are needed. | __Photo: Dean Kaufman__
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In what will be the LIRR terminus under Grand Central, workers use a hose with a pneumatic nozzle to spray Shotcrete onto the tunnel walls. | __Photo: Dean Kaufman__
