Sample of projects previously undertaken by Mackey Plant Construction:
Remedial Works Scheme. Client – Birr Scientific and Heritage Foundation
Remedial Works Scheme to three river walk pedestrian bridges, with steel and timber decks on the grounds of Birr Castle Demesne, Co. Offaly.
The original bridge structures had critical damage being in poor condition due to significant deflection and corrosion of the beams as indicated in the picture below. Consideration had to be given to the river during the works to ensure no material was deposited into the watercourse and an environmental containment system was required.
The work was complicated due to access and working space at the bridge location being restricted and no machinery being allowed enter the watercourse at any time.
Birr Castle Bridge. Client – Birr Scientific Heritage Foundation
Birr castle bridge, being a rare surviving example of a multi-wire cable suspension bridge, is of great historical interest as an example of early suspension bridge construction. Built between 1821 and 1825, this single-span wire suspension footbridge spans the River Camcor inside the grounds of Birr Castle. It is hung on uprights made of reinforced concrete, anchored by two diagonal wrought-iron rods to the earth behind and it has a wood deck spanning across.
The bridge was fully refurbished to bring it back to its original condition including a complete coating system being applied and stone masonry works being carried out.
Sallins Pedestrian Cycle Bridge, Grand Canal Greenway. Client – John Craddock Ltd & Kildare County Council
Design, fabrication, coating and installation of a complex curved pedestrian bridge including stainless steel mesh railings. The pedestrian bridge was completed in accordance with EN1090 Execution Class 3 standards.
Bilberry to Waterford boardwalk. Client – John Craddock Ltd & Waterford County Council
A 300-meter boardwalk over the River Suir in Waterford being a complex project due to working in a tight space and over a tidal river. The main cranked beams were cast into the road and extended out over the river.
The decking, fabricated architectural railings and the timber handrails were installed while making sure no discharge of fluids, residues or any deleterious material polluted the river. The boardwalk was completed in accordance with EN1090 Execution Class 3 standards.
Bower’s Walk, Ballinrobe, Co. Mayo. Client – Mayo County Council and Cunningham Marine
Conservation repairs including specialist repair work, rehabilitation and reinstallation to a wrought iron Single-span footbridge. A specialist high quality corrosion protection system was employed.
The bridge c.1852 is listed as an Architectural Heritage Bridge and is identified by the National Inventory of Architectural Heritage (NIAH) as an integral component of the mid nineteenth-century civil engineering heritage on account of the connections with the country-wide programme of famine relief drainage works completed under the Drainage (Ireland) Act, 1846.
Kinnitty Castle Estate. Client- Coillte and Cunningham Marine
Restoration and conservation repairs of two significant protected national heritage footbridges listed in the National Inventory of Architectural Heritage (NIAH). A specialist high quality corrosion protection system was employed.
Bridge 1 – Single-spire wire suspension footbridge, built c. 1840 over the river Camcor.
This bridge being a rare surviving example of a multi-wire cable suspension bridge is of great historical interest as an example of early suspension bridge construction and also on account of its association with the Mountmellick Foundry. The historical structure of the bridge demonstrates the emerging form of the suspension bridge at the time of construction in early to mid-nineteenth century (the art of engineering).
Bridge 2 – Single-span Metal lattice footbridge c. 1900.
This bridge is of technical interest owing to its lattice girder construction.
Daly’s Bridge, Cork. Client – Cork City Council
Repair, rehabilitation and reinstallation of single span heritage bridge including dismantling and removal offsite.
Cork’s iconic Shakey Bridge (Daly’s bridge) c.1926 remains the only suspension bridge in Cork City and is the only surviving bridge of its type in Ireland. It’s included on the Record of Protected Structures, the National Inventory of Architectural Heritage and is considered a significant contributor to the architectural heritage of the city
The Bridge was among those commended at the 2021 Structural Awards by the Institution of Structural Engineers. This programme celebrates the very best work across the global structural engineering community. The repair and rehabilitation of Cork’s Daly’s Bridge was commended by the judges in the Award for Structural Heritage category. They felt that it was an amazing job to bring the bridge back to its original glory whilst maintaining its signature ‘shake’ .
Meelick Weir, Galway. Client – Waterways Ireland
Design, fabrication and installation of a 300 meter elevated steel walkway over the River Shannon at Meelick Weir connecting Galway to Offaly.
Ennis Train Station. Client – Ward & Burke Construction
Fabrication and installation of Steel Canopy and Footbridge
North Bull Lighthouse, Dublin Port. Client – Dublin Port
Fabrication and Installation of external steelwork including Access Platforms, Walkway and Curved Stairs
Royal Canal Premium Cycle route. Client – Jons Civil Engineering
Fabrication and installation of bespoke handrails along both sides of the Viaduct Bridge making a smooth transition into the existing Newcomen Bridge.
Portumna Bridge, Galway
Restoration and re-strengthening of existing Bridge structure including blasting and re-application of coating.
Clontarf Bridge, Cork
Restoration and re-strengthening of existing Bridge structure including blasting and re-application of coatings.
St. Francis Pedestrian Bridge Kilkenny
Complex Fabrication and Erection including all Architectural Finishes.
Dublin Port Corten Steel Bridge
Fabrication of complex Corten Steel Bridge including all Architectural Stainless Features.
Navan Foot Bridge
Cambered Cantilevered Structure with all architectural finishes including hardwood and complex fabrication and erection.
Tyrconnell Road Bridge
Replication of 123 years old railway bridge in Donegal Town with complete fabrication and correction and architectural finishing including installation of Bridge Bearings and Services.
Dublin Port Facilities
Supply and Installation of 24m Aluminium Gangways including 4 No. 20m Floating Pontoons.
Birr Foot Bridge
Supply and Installation of Foot Bridge including Fabrication and Installation.
UL Foot Bridges
Supply and Installation of 3 Foot Bridges including Fabrication and Installation.
Dublin Port Cruise Ship Access
Supply and Installation of Raised Landing Platform including Gang Planks.
Limerick Boardwalk
Supply and installation of large overhang Platform including fabrication and installation.
Templemore Fire Station
Supply and Installation of Training Tower
Cliffs of Moher
Supply and installation of cladding on Visitor Centre.
Ashton Comprehensive School Cork
Structural steel and cladding for construction of school.