Unexpected additions to work to refurbish Blackfriars railway bridge in London have pushed up the cost of Network Rail’s station rebuild project at the site from £350M to £635M it emerged this week.
The project is now running six months late.
A series of additions to the project’s scope has pushed up its value since Balfour Beatty started work on site in 2010.
As of June last year Network Rail was expecting a final cost of £600M (NCE 28 June 2012).
But NCE understands the latest £35M increase comes after the discovery of corrosion to bridge upports and the need for further bridge superstructure strengthening.
“The project has slipped beyond its original timeframe, but our team made sure the station was open to passengers in time for the Olympics in August,” said a Network Rail spokesman.
“When engineers started work on the bridge at Blackfriars, they realised that while the structure was sound, it would need more work in the next few years.
“As a result it was decided to fold those works into the current project so there would not be any new disruption,” he said.
Remaining work includes completing the installation of solar panels on the station’s new roof and work on the bridge itself.
Both will be completed by this summer, said the spokesman.