Double-decker temporary fix for Hammersmith Bridge

Aaron Morby 2 months ago
Share

Engineers have come up with a radical plan to build a temporary double-decker crossing within the existing structure of Hammersmith Bridge in London, which has been closed fully on safety grounds since 13 August this year.

A new raised truss structure would be built above the existing road deck to carry pedestrians and traffic above
A new raised truss structure would be built above the existing road deck to carry pedestrians and traffic above

This truss structure would provide a lower level for pedestrians and an upper level for cars and buses to cross the Thames while critical repair works take place.

The design by Foster + Partners with input from bridge engineers Cowi has been backed by the local council and presented to Transport Secretary Grant Shapps.

Engineers said the temporary crossing would allow strengthening and stabilisation works to the 133-year-old heritage bridge to be completed at a cost lower than the current £141m estimate.

Temporary crossing structure supported on river piers above the existing road deck

The new truss structure would be assembled in two halves and launched from each side over the existing road surface.

Temporary crossing trusses would be launched over existing bridge from each side of the bridge

It would be supported on each bank and at the two existing piers. As a result, there will be no added load on the existing bridge deck.

Elements of the Grade 2 listed bridge that need repair, including pedestals, anchors and chains, would be lifted away and transported by barges to an off-site facility for safe repair and restoration.

Contractors would use the new lower pedestrian deck to access the works. Once works were completed, the temporary raised deck would be removed.

By repairing the bridge off-site, the huge task of restoration can be done at greater speed, to a higher level and at a significantly reduced cost.

It would also minimise noise, environmental impact and onsite activity, as well as reducing the all-important carbon footprint of the works.

Luke Fox, Senior Executive Partner at Foster + Partners said “We are excited to propose this simple solution to what is an important missing piece of London’s infrastructure that also gives the opportunity to bring back to life a beautiful and iconic bridge by Sir Joseph Bazalgette”

David MacKenzie – Executive Director at COWI said “We consider that this approach is practical and viable.

“Our experience is that offsite refurbishment of bridge structures is safer and more controlled, and results in a higher quality final outcome when the structure is re-installed.”

 

Latest news

Tube chiefs tell contractors trains are safe for builders

Contractors encouraged to stagger site start times in London
7 hours ago

Construction recovers to pre-pandemic level

New work output grew 3.5% in November lifting output above February 2020 pre-shutdown level
7 hours ago

Colas rolls out weekly Covid rapid testing for staff

Build UK trade body offers member firms lateral flow kits at a discount
8 hours ago

Self-employed wages up 9% in north west

Average freelance trade wages running nearly 10% below pre-pandemic level
5 hours ago

Cemex invests in “kit of parts” offsite housing firm

Materials giant backs Modulous to "revolutionise" housing industry
7 hours ago

House building bounce back hailed by minister

Latest official statistics show completions tripled in the third quarter of 2019
1 day ago

Government clears 514-home London Master Brewer scheme

Housing secretary decides not to call in Hillingdon Gardens scheme
7 hours ago

Aarsleff shifts to expansion after return to profit

Ground engineering contractor optimistic with 12 months of good work visibilty
8 hours ago

Fresh shock structural steel price hike

Price of structural steel jumps nearly 50% in just over six months
1 day ago

Former Carillion bosses face new legal action

Eight ex-directors could be banned from boardroom for up to 15 years
1 day ago

Firms due £50m Covid dividend in R&D tax rebates

Contractors eligible to make tax credit claims for efforts to make sites Covid safe
1 day ago

Colmore Tang joins race to reclad unsafe towers by 2021

Midlands builder sets up cladding remediation arm as pace quickens to retrofit 2,000 unsafe buildings
1 day ago

Winvic starts £93m Edgbaston Stadium build to rent job

Civils arm will also deliver highways improvements for Warwickshire County Cricket Club
2 days ago

GLP starts work on 1m sq ft of warehouse space

Contractors given green light on latest round of development as demand soars for logistics schemes
2 days ago

Marshalls to build block plant as orders rebound

New concrete block factory will be built at St Ives in Cambridgeshire
2 days ago

Revenue offers contractors advice as IR35 changes loom

Free online workshops as controversial changes start in April: Sign up for places
2 days ago

Mace achieves net zero carbon goal

Carbon offset and 50% carbon emission cut achieves net zero target
2 days ago

Keltbray hires Multiplex project commercial director

Jason Gibbons joins as commercial director for built environment division
2 days ago

Winners revealed on £80m demolition framework

Sixteen secure places from 17 tenders received
2 days ago

BAM to trial innovative 5G use in construction

5G-powered cameras, drones and sensors to monitor Scottish construction sites
2 days ago

Breedon lures Amey boss to grow contracting arm

Highways specialist James Haluch to join GB Contracting in March
3 days ago

New pothole machine delivers road repairs four times faster

JCB Pothole Pro machine can repair a pothole in under eight minutes and at half the cost of a road gang
4 days ago

“Vital construction continues” during latest lockdown

New Business Secretary Kwasi Kwarteng praises industry's "major contribution"
3 days ago

Ductwork contractors hit by soaring steel prices

Firms warn steel shortages could hit jobs if situation worsens
3 days ago

Fears grow over Covid contract disputes as attitudes harden

Construction leaders warn of perfect storm from Brexit, falling activity, reverse charge VAT and surge in claims
4 days ago

Plans in for £60m Stockport’s Weir Mill flats

Capital & Centric advances scheme as a blueprint for inner city regeneration
3 days ago

£75m infrastructure funding deal for £1bn Purfleet town scheme

Main infrastructure works will start next month
3 days ago

WYG name disappears after US consultant takeover

Tetra Tech name adopted 18 months after WYG sale
3 days ago

Dive under team to slide in 11,000 tonne tunnel

Construction first for Morgan Sindall on East Coast Main Line
3 days ago

Electrical boss barred over £1m mystery expenses

Seven-year ban from running a business for Surrey electrician
4 days ago

Contractor services