Today, the flyover has 34 new sliding bearings beneath its piers, over 150 km of steel cables holding it together (the distance from London to Calais - rather apt given that they were installed by Freyssinet, a French company) and a new waterproofed road surface.
Access to the bearings has been improved to allow future inspections to take place and five new door openings have been cut into some of the piers for access into the bridge deck above.
|New door opening (without door)|
Threaded couplers were cast into the pit wall during their strengthening. Following a detailed survey of these, bespoke seating cleats were made so that the bolt holes exactly matched the coupler locations.
|One of four seating cleats per pit|
|Steel beams installed|
The pit is then covered with a frame and pre-fabricated trench panels - provided by Fibrelite.
The final steps are to replace the tarmac and paving slabs around the piers to blend into the covers. At the pier, another overlapping cover will be fixed to the pier to allow it to move freely.
[to be continued]