BRIDGE 34 – GOTHERINGTON – 4th UPDATE REPORT ON REPAIRS
MONDAY 12TH FEB
With a couple of dry days last week the contractors were able to blast clean the deck plates
and then prime them.
On Thursday the waterproofing contractors came in and applied the waterproofing ...
... followed by the fitting of a double layer of quilting to prevent damage from the ballast.
The end is now definitely in sight and even bad weather will not affect progress significantly.
Most of the repaired timber ballast boards have now been put back, with just a few yet to go in.
With the deck waterproofing and quilt covering complete, (quilt yet to be laid on the upside) the next thing is to install the end of deck drains. The ones put in years ago were too shallow and were allowing water to come out on top of the padstones, corroding the steel bearings and also run down the face of the abutments wetting the abutment walls.
New ones, surrounded by pea gravels encased in a Geotextile quilt to stop silting up are being installed.
At the same time the new brick ballast walls are being given a concrete backing to protect them from any future mechanical tamping machinery.
New large (900mm diam) height warning signs are being fitted to replace the old very small triangular ones. We have also added wasp stripes to highlight the low bridge situation. Because the bridge is skewed at 60 degrees extra steelwork has had to be fitted to make the height warning sign square to the road.
With all work beneath the bridge now completed the dismantling of the scaffolding started today.
This has already revealed the newly painted outer girders and the new sign and wasp stripes.
GWSR Structural Engineer,