Roads in the local area are continually monitored for safety and reliability. As a result improvement schemes are often put in place. Engineering Design have carried out work on the design, contract preparation and site supervision of numerous schemes.

You can find out more about some of the major projects where Engineering Design services have been used. Select a project from the list to get further details on the work carried out and the services provided by the team.

- A7 Trunk Road Auchenrivock Improvement

- A75 Trunk Road Cairntop to Barlae

- A711 Improvements Cargenbridge

- A76 Trunk Road Glenairlie Improvement

- A76 Trunk Road Glengower Improvement

- A75 Trunk Road, London Road, Stranraer

- Trunk Road Maintenance

A7 Trunk Road Auchenrivock Improvement Project Title: A7 Trunk Road Auchenrivock Improvement Client: Transport Scotland Project Works Value: £7.75Million Commencement Date: January 2008 Completion Date: June 2009

• The 3.25km A7 Auchenrivock Improvement scheme has enhanced the safety, comfort and reliability of the Trunk road network and provides 1.650km of overtaking opportunities in both directions.
• After reviewing and appraising a number of possible alignments, a preferred route to the west of the existing A7 road was selected. To maximise overtaking opportunities, extensive earthworks in difficult terrain were required, with the excavation of some 750,000 tonnes of material. The construction of a concrete portal frame underpass for the U251 road and provision of 690m of farm track removed the need for direct field access points or cross over movements on the new section of road. The local community is served with two ghost island road junctions located at either end of the overtaking opportunity section. An adjacent cycle by-pass facility has also been provided utilising the old trunk road.
• During the design process, early consideration was given to environmental issues with an environmental scoping report and stage 2 and 3 Environmental Assessments. This determined the need for a formal Environmental Impact Assessment, which was published as an Environmental Statement in 2006. Identified mitigation measures were incorporated in the final design. This included the provision of mammal underpasses and badger/otter fencing, a sustainable drainage system, sympathetic landscaping to mitigate the road impact and provide new habitats and the construction of noise/visual bunds. The installation of the three large multi-plate corrugated culverts up to 4.28 m diameter included fish passes and mammal ledges where appropriate. The construction of 20m high reinforced earth embankments of slope 1:1 shortened the length of culverts to facilitate the movement of fish and mammals through the culverts. To minimise disturbance to the local community and the environment, the cut and fill of bulk earthworks was balanced to reduce the movement of construction traffic on local roads.

[Back to Top]

A75 Trunk Road Cairntop to Barlae Client :  The Scottish Executive Project Value: £4.5 million

This scheme was a result of the A75 Route Action Plan that considered the route between Gretna and Stranraer and identified improvement needs.

Design Services are sub-consultants to Mouchel Parkman, and were responsible for the design and contract preparation of the 2.5km scheme.

The brief was for a widened carriageway providing alternating dedicated overtaking opportunities (WS2+1). The extent of peat discovered during ground investigation works raised maintenance concerns and the scheme was redesigned as dual carriageway where the west bound carriageway uses the existing road and the east bound carriageway uses the adjacent abandoned railway.

[Back to Top]

A711 Improvements Cargenbridge Client : Dumfries and Galloway Council Project Value :  Dumfries and Galloway Council. Project Value : £1.12m Completion Date : 1998

Early in 1997, Dumfries and Galloway Council was successful in obtaining Challenge Funding for contribution to on-site works for the Cargenbridge Plastics Technology Park and off-site road improvements on the A711.

Phase I of the project included the A711/Garroch Loaning junction improvement including a mini-roundabout.

Phase II consisted of road improvements adjacent to the Du Pont works including the provision of a 5-way roundabout and new 3.2m wide cycleway.

Phase III consisted of a masonry arch bridge widening and road improvements including new road lighting traffic calming measures and cycleway provision.

[Back to Top]

A76 Trunk Road Glenairlie Improvement Client :  The Scottish Executive Project Value : £3.5M

One of the objectives of the A76 Route Action Plan (RAP) study was to examine the potential for improvement of the road by a programme of local improvement schemes to provide overtaking opportunities and reduce platoons, driver frustration, and accidents. Glenairlie was identified as one such improvement scheme.

Mouchel in association with Dumfries and Galloway Council were commissioned by the Scottish Executive under the Multiple Framework Agreement to carry out assessment, design, contract preparation, and supervision of the scheme.

This design process was undertaken by DGDesign. The scheme consists of a combination of widening to the existing road and new "green field" alignment providing a three lane single carriageway incorporating a dedicated lane for overtaking. The improvement is likely to be in excess of 2km long.

[Back to Top]

A76 Trunk Road Glengower Improvement Client :  The Scottish Executive Project Value : £1.3m Completion Date : February 2002

The scheme was a result of the A76 Route Action Plan objectives which considered the condition of the route between Dumfries and Kilmarnock and identified traffic loadings and improvement needs.

Dumfries and Galloway Council were responsible for the design, contract preparation and site supervision of the scheme.

The works consist of the widening and improvement to visibility of the existing road which entailed full re-construction, overlays, new drainage systems and public utility diversion in order to achieve an overtaking section to full trunk road standards. The total scheme length is 1.6km

[Back to Top]

A75 Trunk Road, London Road, Stranraer Client : Scottish Executive Project Value : £0.5m Completion Date : June 2003

The scheme was developed from a Traffic Calming Scheme to include the provision of improved drainage, lighting and cycling infrastructure to enhance the routes to two schools adjoining the trunk road.

The works consisted of the provision of a re-surfaced and reduced width 6.5m carriageway, 3.2m wide cycleway/footway, toucan crossing, junction improvements, street lighting and improved drainage system.

[Back to Top]

Trunk Road Maintenance Client :  Scottish Executive Dates : 1997 to 2001

Between 1997 and 2001 Dumfries and Galloway Council were lead partner in the local authority consortium acting as Management Agent for the Trunk Roads in southwest Scotland.

During this period the Engineering Services Group carried out overlay work, inlays, performance surface dressing, reshaping and drainage works on the A7T, A75T, A76Tand A701T, all on behalf of the Scottish Office / Executive.

The value of schemes ranged from £25,000 to £500,000.

[Back to Top]