a127 ardleigh green bridge replacement - update epagra meeting 2 july 2015 ardleigh green bridge...

A127 Ardleigh Green Bridge replacement - update

EPAGRA Meeting

2 July 2015

Ardleigh Green Bridge replacement – update


Alison Scammell – TfL Communications Manager

Michael Burgess – TfL Assistant Project Manager

Kevin Holland – TfL Traffic Management Specialist

Nick Atkinson – Hochtief (UK) Public Liaison Officer


Why are we replacing the bridge?

•Structure has come to the end of its serviceable life

•Train clearance distances not currently adequate

•Concrete corrosion – at risk of falling onto railway

•Corrosion of metalwork in the bridge

•Cracking of brickwork

•Highway strength not sufficient

•Carriageway width restrictions poses risk to road users


Concrete corrosion

Steelwork corrosion Failing brickwork


Works split into two phases:

Advance works•Advance works in progress•New service bridge to carry utilities•Due to complete mid 2016

Main works •Demolition and replacement of the main bridge•Between mid 2016 and end 2017•Completed by 2017


Lane closures – A127

•Some short term lane closures eg autumn 2015 one lane in each direction closed 24/7 for six weeks

•Overnight closure around Christmas 2015/2016 •During bridge replacement works (mid 2016 – end 2017) only two lanes operational (one in each direction)


Expected traffic congestion

•Along A12 Colchester Rd and M25 (between Junctions 28 and 29)•Increase of vehicles approaching Gallows Corner•Small increase in traffic around Romford (A1251 Mercury Gardens increase of around 20 vehicles per hour)•Slewins Lane & Squirrels Heath – increase of around 10-20 vehicles per hour


TfL action

•Adjusting signals at pinch points•Advance notices of alternative routes•Monitor the situation & take real time action•Plan ahead for different scenarios


Bryant Avenue exit onto A127

Two periods of closure:

•Early 2016 for about four weeks

•Summer 2016 for about nine months


Reasons for closing Bryant Ave exit:

•To provide sufficient space for the working area near the bridge.

•A protective barrier needs to be in place on the bridge to stop vehicles driving onto the railway and into the works site.

•The new bridge will be higher than the current bridge. Raising the road surface requires steps to be in place at times during the works, which are unsuitable for traffic.

•Utilities (water, gas etc.) need to be diverted below and near the Bryant Avenue traffic island (requiring a shorter closure of Bryant Avenue in early 2016).


Communications

•Working with LB Havering•Letter drops•Drop in information session•Social media•Press briefings•Website - www.tfl.gov.uk/ardleigh-green


Questions?

a127 ardleigh green bridge replacement - update epagra meeting 2 july 2015 ardleigh green bridge...

Documents

main bridge

new bridge

current bridge

hour slide

direction slide

progress new service

advance works

increase of vehicles