A Dutch contractor claims to have installed the longest pre-stressed beams ever made.
Haitsma Beton placed the 68m-long box beams into the main span of a bridge it is building at Zuidhorn in the Netherlands.
The contractor also manufactured and transported the 15 beams, each of which weighs 240 tonnes.
Mega-beams such as these remove the need for intermediate supports, resulting in shorter construction programmes and better clearance for vessels.
The bridge at Zuidhorn will allow ships 9.1m tall and 54m wide to pass through.
“We went to the limit, both in terms of engineering and manufacture,” said account manager Karel Bus. “As far as we know, these are the longest beams in the world.”