Harry Stoke 278 and Civils, Bristol

EJ McGrath delivered the Section 278 highway works and the wider civils package for main contractor NMCN on the East of Harry Stoke development in Bristol. Our own teams and plant took on the job from site clearance and bulk earthworks through to drainage, kerbing and finished road construction.

The brief

NMCN engaged us as the specialist groundworks, drainage and Section 278 subcontractor on this residential infrastructure scheme off Hambrook Lane, near the Stoke Gifford Bypass. The package covered both the Section 278 works to the adopted highway and the Section 38 adoptable infrastructure serving the development.

What we did

• Site clearance, including hedge and tree removal, demolition of an existing stone wall and taking up of existing kerbs, edgings and tactile paving
• Bulk earthworks: topsoil strip, cut and fill, embankment reprofiling and topsoiling, with arisings retained on site
• Extensive foul and surface water drainage, with vitrified clay and precast concrete pipe runs from 100mm up to 1050mm diameter, precast manholes up to 3600mm diameter and over 7m deep, headwalls, culverts and a 280mm HDPE foul rising main
• Surface water attenuation, including attenuation ponds, large diameter Weholite storage tanks and hydrobrake flow controls
• Reinforced concrete structures, including valve and foul main chambers and feature wall foundations
• Utility ducting and diversions for Wessex Water, Western Power Distribution and BT, plus a new electricity substation base
• Kerbing, footways and paved areas, block paved and concrete carriageways, and new road junction construction

Working around site constraints

The site sat between Hambrook Lane and the Stoke Gifford Bypass, with access constrained throughout, so we established and maintained a temporary haul road off the Stoke Gifford Bypass, together with a site compound and wheel wash, for the duration of the works. Several drainage runs were carried out under reduced six hour working windows and road closures.

The outcome

We handed the completed highway, drainage and civils package back to NMCN, delivering the full scope with our own directly employed teams and plant.