A13/A1014 Interchange, DP World London Gateway

Design and build of the A13/A1014 junction to increase traffic capacity

Project outline 

The objective of the scheme was to offset the traffic that would be generated by the new London Gateway Port by widening the two lane circulatory section of the interchange of the A13/A1014 to three lanes.

Key challenges

The Port Gateway intersection required an understanding of the current and future traffic demands and planning of traffic management during construction to minimise delays and disruption.  

The existing A13/A1014 interchange comprised slip roads from the A13 to the roundabout, approach roads from the A1014, A1013 and B1007 and bridges spanning over the A13.

Project delivery and innovation

Detailed traffic management plans were prepared with the buy-in of the local authority, stakeholders and emergency services and reflected in the site management plan. 

The scope of the scheme was to widen the two-lane circulatory section of the interchange to three lanes, Murphy:

  • widened the north bridge to the south to accommodate an additional lane of traffic
  • demolished the south bridge and replaced it with a new wider bridge
  • realigned and widened the slip roads and constructed/re-formed new embankments
  • widened the A1014 by modifying the footway and parapet of the Manorway rail bridge – this avoided the need to work close to or beneath the bridge and disrupt the railway.

Innovations included:

We worked closely with the client and local community to determine the most attractive and cost effective environmental barrier.  This included the construction of a bespoke demonstration panel and post section that was approved by residents at a series of public open forums.

Murphy proposed an alternative pavement design that utilised an unbound material, this achieved the equivalent pavement stiffness with a shorter curing period therefore saving time and easing the traffic flow.

The effective use of Incinerator Bottom Ash Aggregate (IBAA) as a Type 1A fill.  In the volumes used, this was a UK first and not only provided environmental benefits (IBAA is a waste product produced from the burning of domestic waste) but also achieved a class 3 foundation with class 2 materials. 

Murphy redesigned a major water diversion.  This enabled slope stability to be undertaken clear of utilities risk and reduced the programme and final costs.

Effective communications were essential, and included stakeholder workshops, the local press and a dedicated website with 24hr contact numbers. This collaborative approach allowed us to understand and address each stakeholders concerns.  The project was completed ahead of schedule, with the minimum of disruption and with no complaints. 


Key facts

  • The first UK project to use Incinerator Bottom Ash Aggregate (IBAA) as a Type 1A fill in such large quantities. 

Client

London Gateway

Location

Stanford-le-Hope, Essex

Completion Date

March 2014

Value

£10m

Capabilities Demonstrated

  • Engineering
  • Building
  • Highways and streetworks
  • Design

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