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Forth Crossing site investigation to start

The next round of marine investigations for the Forth Replacement Crossing is scheduled to start in early May.

It will provide more information about seabed conditions around the bridge’s towers.   

Most of the work will take three to four weeks and will focus on the soil strength of upper seabed sediments. Glover Site Investigations will undertake the work in the Firth. Two rotary drilled boreholes and three trialpits will also be dug by BAM Ritchies on the south foreshore near Port Edgar Barracks sea wall.  

 “Last year we carried out marine investigations to establish the deep ground conditions in the estuary, which involved boring rock up to 90m deep in some cases,” said Transport Scotland Forth Road Crossing geotechnical manager Paul Mellon.  

 “The vast majority of works are quite different to this and involve testing softer alluvial soils.”  

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