Explosive bridge demolition continues in US

Planned demolition work continues on the Chain of Rocks Bridge in the US. The second of three planned blasts has now been carried out, successfully dropping another section of the structure into the canal beneath. The bridge used to carry Interstate 270 but has been replaced with a new structure lying close at hand. The old bridge lies just to the north of the city of St Louis, with the eastern end of the structure on Chouteau Island in Illinois and the western end is in Missouri.  The final section of the bridge will be removed in due course.