Mersey Gateway bridge-building machine ends run

Aaron Morby 1 year ago

One of the Mersey Gateway’s two giant bridge-building machines has finished casting over 700m of approach road viaduct on the north bank of the Mersey.

Mersey Gateway

New aerial pictures reveal Mersey Gateway taking shape as heavyweight moving scaffold system completes its job casting northern elevated viaduct

The bright orange movable scaffolding system nicknamed Trinity has cast the final central span of the elevated north approach viaduct.

This means the innovative concrete formwork machine has constructed 11 road deck spans, creating one seamless structure that sits on top of supporting bridge piers running across the saltmarsh.


The MSS was specially made for the Mersey Gateway bridge. While most machines of this kind can only build bridge spans of up to 60 metres, Trinity was specifically designed to be able to cast spans of up to 70 metres, making it the longest MSS in Europe.

With its work now done, Trinity will be dismantled, reused and recycled.

Trinity merseyside gateway

MSS Trinity’s final concrete pour underway

It will take construction teams around two months to take the machine apart as they contend with 1,200 components, 3,000 actual parts, and over 60,000 bolts.

Gareth Stuart, Merseylink’s Project Director, said: “We now have the central section of the road deck complete and expect the entire north approach viaduct to be finished within the next couple of months.

“This key piece of road infrastructure is one of two elevated approach viaducts that will connect the new bridge to the main road networks in Widnes and Runcorn improving links between the two towns and the wider region.”

The approach viaduct decks are constructed in three phases. Once the central spans have been constructed by the MSS, a deck slab is built on top of the span, and finally the outer deck or ‘wings’ are built by a wing traveller machine to provide the full six-lane width of the approach road.

Mersey Gateway

Trinity measures an impressive 157m long and weighs around 1,700 tonnes.

Declan Cannar, Merseylink’s General Foreman in charge of the MSS, said: “The main part of the machine, the steel structure, will be transported to Slovakia, where it’s going to be used to build a bridge in Bratislava, while the casting cell will be recycled as this particular section was a bespoke piece specifically designed for the Mersey Gateway bridge.”

North Pylon mersey gateway

110m tall north pylon

The Mersey Gateway bridge is on schedule to open in autumn 2017.


Latest news

Vinci UK profits soar despite £18m civils loss

Profit boost from land disposal offsets further losses at Taylor Woodrow
8 hours ago

£36m Cardiff student block set for planning OK

Crosslane gets go-ahead for 384-bed scheme
3 hours ago

Stalled Angelgate site put up for sale

Land earmarked for blighted Manchester resi scheme to go under auctioneer's hammer
4 hours ago

FRC launches probe into Carillion finance directors

Investigation into Richard Adam and Zafar Khan over preparation of financial accounts back to 2014
9 hours ago

Kier set for £48m Pirbright animal virus research lab

Work due to start before end of 2018 on the high containment large animal facility
8 hours ago

Wates sees order book swell to record £5.1bn

Contractor confident about future prospects as it offers new roles to former Carillion staff
9 hours ago

Engie to start stripping cladding on East London tower blocks

Canning Town and Plaistow Tower housing blocks get reclad go-ahead
9 hours ago

Passer-by raises safety alarm over solar panel contractor

Director and contractor fined after ignoring safety warnings
9 hours ago

RSK buys ground investigation specialist

Central Alliance is latest deal in acquisition spree by consultant
3 days ago

Plans in for Cheesegrater’s big brother in London

Tapering skyscraper at 100 Leadenhall will tower over the Cheesegrater
3 days ago

Vast £1.6bn South London estate rebuild approved

Clapham Park to be built out with 2,500 homes in mid-rise blocks
4 days ago

BESA appoints David Frise as new chief executive

Former submariner takes the helm at the Building Engineering Services Association
3 days ago

ISG clinches £17.5m Bradford leisure centre

Sedbergh sports and leisure facility will contain a 25m pool, gym
3 days ago

Boost your online presence with the new Enquirer Directory

New site for suppliers and buyers will showcase their products, services and latest stories
3 weeks ago

Berkeley unable to boost construction of new homes

Housing giant blames market conditions as it predicts £3.3bn profit in five years to 2021
3 days ago

Balfour Beatty tipped for £200m London student/office scheme

Landmark Vine Street project could become Balfour's second major contract with Urbanest
3 days ago

VolkerWessels UK margins edge up to 3.2%

Profits and order book grow by 7% on back of rising infrastructure spend
3 days ago

Weston Homes submits 1.2m sq ft Norwich scheme

Anglia Square scheme will provide over 1,000 homes, 40 shops and a 200-bed hotel
3 days ago

Network Rail seeks two geotechnical firms for £190m north deal

Scottish and North East earthworks delivery places up for grabs
3 days ago

Search to start for £400m Southend regen partner

Council searching for development partner to build 1,300 homes
4 days ago

Kier lifted by McNicholas deal in first half

Kier says claims and final account still to be settled on challenging Mersey Gateway project
4 days ago

Betting Spy: Man City can win Champions League

City look a good bet at 3/1 to go all the way
4 days ago

Buckingham to build giant fridge at Dover port

Contractor wins race for £15m Refrigerated Cargo Terminal
4 days ago

Hydrock places remediation arm into administration

Up to 95 jobs at risk as Bristol-based QDS Contracting collapses
5 days ago

Balfour supplier hit by Hinkley contract delays

Engineering specialist Redhall hampered by delays to nuclear deal
4 days ago

£120m Glasgow police HQ to flats scheme approved

Moda Living is planning over 400 private rented flats
5 days ago

Worker loses finger at builders merchant

Welsh firm fined after glove gets caught in table saw
4 days ago

Hill secures £200m finance to deliver 5-year plan

House builder on recruitment drive as it plans to raise revenue to £1bn by 2023
5 days ago

Alumasc sounds profit warning over project delays

Shares slump 20% as commercial new build demand dips
5 days ago

Balfour Beatty UK construction arm returns to profit

Contractor continues turnaround despite Aberdeen bypass problems
5 days ago

Contractor services