Engineers have had to add extra support to part of Dundee’s new £6.9 million flood defences because of vibrations from the Tay Rail Bridge.
Workmen have had to “shore up” a section of the new wall at the Tay Rail Bridge because the trains passing overhead were stopping the cement from setting properly.
One insider said: “They have had to put in extra support at the rail bridge to stop it (the wall) falling down.
“Because of the vibrations, the wall was falling to bits before the cement set so they have had to shore it up a bit more at the bridge.”
Roadworks to allow construction of the new sea wall began in June and were supposed to last six months.
However, there are still prohibitions in place on Riverside Drive at the Rail Bridge.
When necessary, traffic is stopped from making a right turn into Riverside approach from Riverside Drive at Barnetts garage.
Repairs have also been carried out on the carriageway to a large pothole that appeared in the road over the last week.
The council insider said: “You wonder if all that extra weight has affected the road and caused that pothole.”
A Dundee City Council spokeswoman said: “Work is ongoing to complete the Riverside Drive section of the new £6.9m coastal flood protection wall which will run between Camperdown Dock and Dundee Airport.
“The work will see a reduced risk of flooding to residents, community and business properties and the new open space at Slessor Gardens.
“The scheme will include set-back walls and flood defences to provide a one in 200 year plus climate change standard of protection.”
Once the work is completed, Dundee City Councill will have a “one-year-in-200-standard of protection”.
The height of the existing sea wall is being adapted and new setback walls have been constructed as part of the scheme.
Floodgates have also been installed to allow for access for maintenance along City Quay from Camperdown Dock gate to the Tay Road Bridge.
The work is being carried out by Balfour Beatty Civil Engineering.
Councillors approved the plans unanimously and the flood protection scheme is one of 42 given priority status for Scottish Government funding by the Scottish Environmental Protection Agency.
The Scottish Government launched the country’s first national flood risk management plan in 2016.
It identified 42 flood protection schemes that would help protect up to 10,000 properties at a total cost of around £235 million.
