M1 Motorway Widening
M1 Motorway Widening M1 Motorway Widening M1 Motorway Widening M1 Motorway Widening

M1 Motorway Widening - Black's Road to Stockman's Lane

Belfast, Co. Antrim, Northern Ireland

Client DRD Roads Service - Eastern Division
Consulting Engineer DRD Roads Service - Eastern Division
Value £5.0 m
Contract Period -

Symmetrically widening approximately 2 km of dual 2-lane motorway, about the middle of the central reserve, to provide 3 lanes in each direction between Black's Road and Stockman's Lane. This involved reducing the width of the central reserve, reconstruction of both motorway hard shoulders and reinforced earth solutions to locally steepen the top of the existing motorway embankment to accommodate the newly widened carriageways, along with the provision of safety fencing, new street lighting, road drainage, carriageway resurfacing (including thin surfacing material), landscaping and the following structural elements:

  • Bridge strengthening work to Finaghy Road North Bridge, including a piled approach slab, deck widening, new parapet plinths, deck water proofing, infilling the light well and concrete repairs,
  • Construction of 1.6 m high x 3.8 m wide x 40 m long reinforced concrete box culvert and wing walls,
  • Construction of reinforced concrete bases for the fabrication and erection of 2 sign gantries,
  • Construction of a reinforced concrete high containment structure,
  • Construction of a reinforced concrete combined storm overflow chamber and realigning the 1200 mm diameter inlet and 750 mm diameter outlet pipes and pipe jacking a 1200 mm diameter sewerage pipe.


Other works included widening approximately 2800 sq m of asphalt and bitmac footway to facilitate a new cycle lane, street lighting and earthworks to widen carriageway lanes.