Ireland - Services

Services

Highways

RPS has unrivalled experience in the planning, design and construction management of roads and highways throughout the UK and Ireland for both the public and private sectors.

Over the past 30 years we have built up a specialist highways team and developed a reputation for technical excellence. Our approach is straightforward, backed by proven expertise and competence using the best people and latest technology.

We listen to our client’s needs, understand the stakeholder issues and weigh up all the alternatives before recommending innovative solutions to bring projects to fruition on time and on budget.

RPS specialises in the delivery of high quality multidisciplinary services, including engineering design, environment and planning, for large design build and traditional civil engineering projects. We have recently delivered over 300km of major design build highways, with complex ground and interface issues, including obtaining statutory consents in many cases.

Case Studies

A9 Dualling Kincraig To Dalraddy, Scotland

 

 

RPS is Lead Designer for this £35M Design-Build project comprising 7.5km dual carriageway, 7.5km non-motorised user route, and six large underpass structures. This scheme is part of the wider A9 Dualling Programme to improve the A9 between Perth and Inverness and is the first section of the overall programme to be dualled.

The design was developed on a BIM platform with construction drawings extracted from Level 2 BIM Models.

Design elements include:

7.5km of D2AP carriageway with two lay-bys

1.8km of WS2+1 carriageway reduced to S2 carriageway with one lay-by

7.5km of non-motorised user route

Two major / minor left in / left out priority junctions

Six underpass structures, to accommodate private access tracks, watercourses and non-motorised user routes with one culvert structure

Vehicle restraint systems

Earthworks, including dealing with peat, rock engineering and other geotechnical measures

Drainage works, SUDS, new culverts and culvert extensions/upgrades

Traffic signing and road marking

Accommodation works, including access tracks

Undertakers works and Private Apparatus Works

Landscaping and environmental mitigation works

All work was carried out on a brownfield site, with the design developed to maintain two lanes of traffic throughout the construction period.

Particular project challenges included relocating the non-motorised user route off-line in order to reduce the width of the underpass structures and introducing sections of split-level carriageway to maximise the utilisation of site won fill material.

The project runs through the Cairngorms National Park in the Highlands of Scotland and also crosses through Alvie Site of Special Scientific Interest and a tributary of the River Spey Special Area of Conservation. RPS also provided ecological monitoring services which involved monitoring environmental compliance of the scheme and developing good practice, working closely with onsite teams and external regulators.

M11 Arklow Rathnew & N7 Newlands Cross Upgrade PPP

 

 

This project included 16.5km of motorway in County Wicklow and a major urban interchange in Dublin, delivered on budget and ahead of programme.

RPS acted as Transport Infrastructure Ireland’s Representative on this €282m PPP project. The project includes the M11 Rathnew to Arklow motorway which opened in July 2015, the N7 Newlands Cross Junction Upgrade which opened in November 2014 and a motorway service area and associated grade separated junction including one bridge structure on the Gorey Bypass.

RPS provided procurement and tender management, technical reviews of design submissions, contract monitoring, including monitoring the operation of a construction environmental management plan, site supervision and administration services during the design and construction stages of the PPP contract.

The M11 project was completed seven weeks ahead of programme and will reduce journey times by between 10 and 20 minutes, dependent upon on traffic conditions. It comprises 16.5km of toll-free two-lane motorway, two grade separated junctions, eight bridges, realignment of sections of the old N11 and link roads to tie into the existing road network.

The N7 carries approximately 90,000 people daily and the junction upgrade, with three lanes in each direction, has significantly reduced journey times. The junction was designed and constructed online and required the construction of substantial temporary traffic diversions to enable the route to remain open to traffic.

The flyover element at Newlands Cross has a two-span bridge structure with extensive embankments on the east and west sides of the junction. The materials used for the embankments were all sourced locally and environmentally friendly cement was used to reduce CO2 emissions.

The Newlands Cross Flyover was awarded the Irish Concrete Society Award for Infrastructure in April 2017.

M8/M73/M74 Motorway Improvements PPP, Scotland

 

Image: courtesy of Iain Ferguson

 

RPS acted as the contractor’s designer on behalf of Transport Scotland for this major £400m DBFO project comprising a new M8 dual three-lane motorway section between Bailliestown and Newhouse, with three new grade separated motorway junctions and amendments to two existing motorway junctions.

The project involved multiple new structures, alterations to existing structures, traffic signals, lighting, drainage, pavement, road markings, footways and cycleways, road markings, soft ground challenges (including deep peat), pavements, environmental management, gantries, noise barriers and demolition of existing structures.

RPS carried out detailed design for 16km of existing motorway network including widening for additional lanes, realignments, drainage, mining stabilisation works, environmental mitigation, new and re-configured roundabouts, 40 structures of which 23 were new structures (underpasses, highway bridges, rail bridges, foot/cycle bridges, culverts and retaining) and provision of Intelligent Transport System (ITS) across the network.

Raith Junction is the most complex element of the scheme involving the construction of a new underpass structure to provide free flow for the existing A725, the realigned Raith Roundabout, three new bridge decks, pedestrian and cyclist facilities over the roundabout and flood alleviation storage ponds. RPS delivered a combined temporary and permanent works solution for the junction.

RPS developed a BIM model of the interchange, a collaborative effort between RPS, contractor and O&M teams. The use of BIM has enabled our permanent and temporary designer to coordinate the design of permanent solutions with traffic management, dewatering and temporary works.

This project is located in a restricted environment with many environmental challenges. RPS assessed and implemented extensive ecological commitments from Ecology Statements into the detailed design and assisted in coordinating further surveys to identify potential ecological constraints (mammal, geomorphological, hydrological). RPS provided suitable and practical mitigation measures to ensure compliance with best practice and minimal impact during construction. The project was awarded the ACEI Design Excellence Award (Overseas) in 2018.