Tuesday 13 February 2018

4th Gotherington update


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.



John Balderstone,
GWSR Structural Engineer,

Monday 12.2.2018

5 comments:

  1. Many thanks to John Balderstone for the latest update. It's magnificent workmanship, but I agree, getting the job finished and the track relaid is going to be a tight schedule ! The PW team have already got their hands full, but they're a brave lot.

    Good luck with it !

    Peter

    ReplyDelete
  2. Thanks for the update, the bridge looks very smart now, a good job done well. Now the PW Dept. needs to relay the track so hopefully they get good weather, Jo, just send a reminder to Mrs. B for some cake and advise Pauls Catering Coach to be ready for the feeding of the gang, if the weather continues as it has they will need all the sustenance they can get!!!
    Regards
    Paul & Marion

    ReplyDelete
  3. So when does the road re-open?

    ReplyDelete
  4. Are you going to paint LOW BRIDGE on the bridge in large fluorescent letters?
    Seems to be the usual practice on recent road bridge works.

    Will there be any coverage by webcam?

    ReplyDelete
  5. John Balderstone Structures Engineer15 February 2018 at 15:18

    The road does not carry much heavy goods traffic so it was not worth the money to fit LOW BRIDGE signs. Also the bridge has only had one very minor bump, at least 12 years ago, which did not cause enough damage to need repairing. The road is officially closed until 28th Feb. but we may be able to open it slightly sooner.

    ReplyDelete