VIDEO – Explosive blast apart redundant US bridge

July 13, 2015
The Donora-Webster Bridge over the Monongahela River in the US has been demolished using explosives. The ageing structure spanned the Monongahela River, connecting Washington and Westmoreland Counties in Pennsylvania. The bridge was built in 1908 and originally carried a rail link but in 1938 the tracks were removed and the structure was modified so that it could handle motor vehicle traffic instead. The Donora-Webster Bridge linked Route 837 on the west side of the Monongahela River with Route 906 on the east bank. The bridge was then closed to vehicle traffic in 2009 because the structural deficiencies had been identified by the local authorities. Despite being designated a historic bridge by the Washington County History & Landmarks Foundation, the Donora-Webster Bridge was earmarked for demolition. The contractor used close to 32.7kg of explosives placed at 387 separate points around the structure so as to break up its structural integrity, resulting in it crashing into the river below in a successfully controlled demolition.

Related Content

  • India’s longest tolled expressway is open to traffic
    January 2, 2013
    Earlier this year, a new expressway was opened to traffic in India, adding connectivity to the country’s road network - Mike Woof reports. India’s economic growth has fuelled a massive construction boom in the country. Road building has been set as a priority by the Indian Government to help ensure continued economic development and improve connectivity between major population centres. One major new expressway has recently opened to traffic, having been designed to international standards and provides insi
    Read More
  • New Zealand’s Waterview project is moving closer to completion
    December 13, 2016
    New Zealand’s biggest road project is less than a year away from completion, and a lot of progress has been made since World Highways last looked at the project two years ago - Mary Searle Bell reports New Zealand’s Waterview project is moving closer to completion and will be the largest road project in the country. The NZ$2 billion Western Ring Route will see the creation of an alternative motorway to State Highway 1, which runs through the centre of Auckland. The 47km-long motorway will allow a large p
    Read More
  • Concrete surface for runway paving job
    January 18, 2016
    The Fort Lauderdale-Hollywood International Airport in Broward County, Florida, was suffering departure delays on every single flight. The existing 9R-27L runway was too short at 1615m in length, affecting capacity at the airport. To deal with the issue, the Broward County Board of County Commissioners created a plan to extend the southern runway to 2438m to accommodate larger commercial aircraft. The project was not simple however and could not be achieved by tearing out the existing runway and buil
    Read More
  • Korean bridge construction poses challenges
    February 23, 2012
    On South Korea's southern coast, an innovative highway sea crossing is providing many engineering challenges
    Read More

Highlighted Content