Our range of drainage services reflects Crown Highways continued commitment to providing innovative solutions along with specialised process development.

All our works are undertaken by our trained and qualified directly employed workforce who understand the need to ensure that works are undertaken on time together with a right first-time attitude.

Additionally, Crown Highways have recently announced the delivery of a filter drain recycling machine.

The CR Series 500  filter drain recycling machine has been developed following a 6-month development process and is capable of recycling up to 90t of filter drain media per hour. The process is a cost-effective and environmentally friendly method of recycling filter drains.  The benefits of adopting this process include:

  • Reduction in new quarried materials being taken to site.

  • Reduction in waste materials being taken to a landfill.

  • Reduced HGV movements in and out of lane closures.

The machine has a number of controls that allows the operator to change the speed of the process based on the volume of silt contained within the filter drain itself.  This ensures the drainage media placed directly back into service meets the grading specification as stated in Table 5/5 of the SHW (MCHW 1) with all waste products being removed from the site. The process transforms the non-compliant drainage system to its original condition thus ensuring the pavement does not deteriorate prematurely due to water-related deterioration.

Identification and Verification

  • Asset Inventory Surveys including below ground network connectivity surveys & asset geo-referencing.
  • CCTV condition surveys to identify pipe degradation, silt build up, root ingress etc…
  • Above ground topographical Surveys.
  • Below ground asset surveys and referencing using latest GPR technology.
  • Identification of flooding hotspots.
  • Flow Monitoring.
  • Identification and investigation of soak-away and outfalls.
  • Infiltration testing.
  • Ecology and Habitat surveys.
  • Invasive weed surveys.
  • Intrusive ground investigations.
  • Factual and Interpretive reporting of site investigation works.
  • Production of waste and material management plans.

Structural Refurbishment and repair

  • Emergency call out for reseating ironwork.
  • Emergency spill response.
  • Construction of pollution prevention chambers.
  • Root Cutting.
  • Structural re-lining.
  • High pressure jetting.
  • Manhole refurbishment.
  • Manhole and catchpit cleaning including refurbishment.
  • Concrete patch repairs.
  • Full and part length replacements.
  • Emergency over-pumping.
  • Drainage ditch clearance and re-profiling.
  • Vegetation clearance.
  • Invasive weed identification and treatment.
  • Tree surveys