Donegan Civil Engineering

Founded in 1992 by Managing Director Valentine J Donegan and built on a personal reputation, Donegan Civil Engineering is a family-owned award-winning business that delivers the capabilities, expertise, innovation and experience to undertake large scale projects as either principal contractor or specialist sub-contractor.

Our areas of expertise for the private and public sector includes:

Shaft-Sinking
Pipe-Jacking
TBM Tunnelling
Micro Tunnelling
Hand Driven Tunnelling (including Timber Headings)
Complex Sewer Connections
S185 Utility Diversions and Crossings
Pipeline Construction
Opencut Drainage
Large Cofferdam Excavations
Reinforced Concrete Structures

With a proven 30-year track record of delivering a range of projects, Donegan Civil Engineering continues to build on our fantastic reputation to continue to collaborate and innovate to ensure we continue to deliver for our long list of established clients and potential new clients.

We own, maintain and operate an extensive fleet of general civil engineering and specialist plant and equipment including; tunnel boring machines, micro tunneling systems, pipejacking systems, shaft-sinking equipment, cranes, wheeled & tracked excavators, generators and light and heavy goods transport. Our continued investment in up-to-date technologies and equipment, as well as the continued development of our highly skilled operational teams has reinforced and enhanced our capability in all areas of operations.

As a business we endeavor to develop long-lasting relationships with our clients, and our business has grown predominantly from repeat work and framework opportunities. Our ethos is simple; construction is about providing a service and as such we always work collaboratively and flexibly with our clients in a spirit of openness and honesty.

We work diligently with our clients to find innovative solutions to traditional construction problems whilst applying the latest information and construction technologies to help drive efficiencies and reduce waste in our processes without compromising on quality.

Hathershaw Fields CSO & Bardsley WwPS (2023)

Improving water quality in the River Medlock by installing new powered screens at existing sites in Oldham, Greater Manchester

Blackburn and Darwen WwTWs (2022)

Both Blackburn WwTW and Darwen WwTW discharge final and storm effluent to watercourses that are tributaries of the River Darwen, feeding into the River Ribble estuary and the bathing waters of the Fylde coast in the Irish Sea. At Blackburn WwTW, which provides treatment for a population equivalent (PE) of approximately 400,000, construction of the […]

Paisley Tunnel Project (2019)

Scottish Water’s £17m Paisley Environmental Project, which started in October 2016, is the largest of its kind that Scottish Water has ever made in Renfrewshire. The project is part of the company’s £250m, six-year programme of work, launched in 2013, to improve river water quality and the natural environment and tackle flooding across the Greater […]

Medlock Quality Programme (2019)

Medlock Quality Programme is part of United Utilities AMP6 investment programme across the North West and is the third Nereda® Reactor Plant to be operated by United Utilities. The scheme can be split into two distinct areas: (i) the upgrade of Failsworth WwTW to meet the new discharge consent and reduce the volumes of spills […]

Station Road (Queensbury) Sewer Flooding (2018)

Mott MacDonald Bentley (MMB) carried out an investigation for Yorkshire Water Services into the flooding of five properties in Queensbury in West Yorkshire during periods of heavy rainfall. The investigation concluded that the combined sewer system in the residential cul-de-sac had insufficient capacity during a 1 in 10-year storm return event, resulting in overland flow […]

Blackburn and Darwen WwTWs (2021)

Blackburn WwTW was constructed in the 1960s and principally treats domestic crude sewage from the Blackburn catchment, with two major additional contributions; a high strength trade effluent from the InBev brewery and an ammonia rich return liquor flow from the sludge treatment plant. The key river water quality/water framework directive parameters within the revised environmental […]

Blackburn and Darwen WwTWs (2020)

Blackburn WwTW, located at Samlesbury near Blackburn, serves a population equivalent (PE) of approximately 400,000 and discharges final and storm effluent to watercourses that are tributaries of the River Darwen, feeding into the River Ribble estuary and ultimately into the bathing waters of the Fylde coast in the Irish Sea. Over the last 12 months, […]

Blackburn and Darwen WwTWs (2019)

Both Blackburn WwTW and Darwen WwTW discharge final and storm effluent to watercourses that are tributaries of the River Darwen, feeding into the River Ribble and ultimately impacting on the bathing waters of the Fylde coast. Following on from the Blackburn and Darwen WwTWs (2017) article and Blackburn and Darwen WwTWs (2018) article, both published […]

What we do:

Contractors: Civils | Piling | Pipeline | Shaft Sinking | Tunnelling

Flood Alleviation: Contractors | Civil Engineering | Concrete Works | Piling | Drainage

Reservoirs & Storage: Contractors | Civil Engineering | Concrete Works | Piling

River Work: Civil Engineering | Concrete Works

Site Preparation: Cofferdams | Piling

Stormwater Storage: Contractors | Civil Engineering | Concrete Works

Wastewater Pumping Stations: Contractors | Civil Engineering | Shafts | Shaft Sinking

Wastewater Treatment: Contractors | Civil Engineering | Concrete Works

Water Pumping Stations: Contractors | Civil Engineering

Water Treatment: Contractors | Civil Engineering | Concrete Works