Pittsburgh bridge blasted

Explosive demolition has been used to remove an old highway bridge in Pennsylvania. Some 90kg of explosives were used to blast the pre-weakened steel structure of the 87 year-old Masontown Bridge. The redundant steel truss structure lay just 3m from the new bridge now carrying Route 21 over the Monongahela River and connecting Masontown with Monongahela Township. The location of the explosives and the pre-weakening work carried out however meant that the old structure, built in 1925 and upgraded in 1933, fe
October 7, 2013 Read time: 1 min
Explosive demolition has been used to remove an old highway bridge in Pennsylvania. Some 90kg of explosives were used to blast the pre-weakened steel structure of the 87 year-old Masontown Bridge. The redundant steel truss structure lay just 3m from the new bridge now carrying Route 21 over the Monongahela River and connecting Masontown with Monongahela Township. The location of the explosives and the pre-weakening work carried out however meant that the old structure, built in 1925 and upgraded in 1933, fell as planned and without any damage to the new bridge. Traffic was halted on Route 21 for the blast.
Road Structures

Related Content

  • SSL hits back over criticism of its work on the Champlain Bridge
    December 11, 2017
    The contactor building the replacement Champlain Bridge in Canada has hit back over of allegations of poor workmanship in the US$3.3 billion project. The new 3.4km cable-stayed Champlain Bridge over the St Lawrence River will have six lanes vehicle lanes and a separate cycle and pedestrian lane. Design life is 125 years and is being constructed under a public-private partnership and operating contract of 30 years after completion of construction. Work includes construction of a smaller bridge for Île des
    Read More
  • A new study is being carried out for a proposed bridge project for the UK’s Thames River
    April 4, 2012
    Engineering specialist AECOM will carry out a study into the proposed Lower Thames Crossing project in the UK.
    Read More
  • Russian roads and bridges being planned
    April 22, 2020
    Russian road and bridge construction and maintenance works are being planned.
    Read More
  • Pittsburgh plans propose Parsons for bridge project
    January 9, 2014
    Parsons Brinckerhoff is handling the design contract for a new bridge in the US city of Pittsburgh. The new structure will replace an existing 89-year-old bridge on South Negley Avenue and the contract was awarded by the authorities in the City of Pittsburgh. The existing bridge carries South Negley Avenue over the Port Authority of Allegheny County East Busway and the Norfolk Southern Railroad. It carries around 15,000 vehicles/day and connects East Liberty and Shadyside. Originally built in 1924 and rehab
    Read More

Highlighted Content