Environmental Liaison Group 2

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M4 Widening Castleton (J29) to Coryton (J32)
Local Authorities Liaison Committee - No.4
18th June 2008
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Introduction
M4 Widening Castleton to Coryton Local Authority
Liaison Committee 18th June 2008
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M4 Widening Castleton to Coryton Local Authority
Liaison Committee 18th June 2008
Progress so far

• Phases 1 2 Junction 32 to 30 eastbound
  carriageway and central reserve complete
• Phase 3 Junction 30 to 32 westbound edge phase
  started 16th June 2008.
• Adjustments to temporary Varioguard barrier
• Phase 4 - commenced bulk earthworks.

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Programme
M4 Widening Castleton to Coryton Local Authority
Liaison Committee 18th June 2008

• Progress is being maintained
• Construction is on programme
• Advanced work (site clearance) Junctions 30 to 29
  already completed

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M4 Widening Castleton to Coryton Local Authority
Liaison Committee 18th June 2008
Construction Programme
Phase 1
Phase 4
Rhiwbina
Pentwyn /
Phase 3
Phase 6
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Works planned in next 3 months
M4 Widening Castleton to Coryton Local Authority
Liaison Committee 18th June 2008

• Erect new boundary fencing where required.
• Continue bulk earthworks cut to fill and
  temporary stockpile in selected locations.
• Extend underbridges and subways.
• Construct drainage ponds and lay new drainage
  pipelines.
• Install motorway communication cabling.
• Erect new acoustic barriers where required by
  design.
• Lay new road construction and surfacing.
• Night works to connect slip roads at Junctions 30
  32

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Works planned in next 3 months (cont)
M4 Widening Castleton to Coryton Local Authority
Liaison Committee 18th June 2008

• River Rhymney Bridge superstructure extension
• Utility service diversions west of Cardiff Gate
  J30 (south side)

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Site Visit
M4 Widening Castleton to Coryton Local Authority
Liaison Committee 18th June 2008
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M4 Widening Castleton to Coryton Local Authority
Liaison Committee 18th June 2008
Open Discussion
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M4 Widening Castleton to Coryton Local Authority
Liaison Committee 18th June 2008
Liaison contact Andrew M. Davies 24hr Mobile
07805 619615 Site offices Junction 30, Cardiff
Gate Office Tel [phone]
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M4 Widening Castleton to Coryton Local Authority
Liaison Committee 18th June 2008
Next meeting Thursday 18th September 2008