£130m M3 dumb-bell junction plan unveiled

Aaron Morby 4 months ago
Share

Highways England has started consultation on plans to rebuild junction 9 on the M3 to create a new dumb-bell design layout.

The radical £130m rebuild is needed to tackle heavy congestion which often causes traffic queues backing up onto the M3 northbound carriageway.

Existing junction 9 of M3 and new layout plan

Around 110,000 vehicles use junction 9 every day, a large roundabout across two bridges, which goes above the M3. Congestion is expected to get worse with increased heavy goods vehicle traffic on the A34 and M3 from the proposed development of the Southampton container port.

The new WSP junction design will provide free-flow links between A34 and M3 with the A34 southbound link passing under the M3 with a 100kph design speed.

The A34 Northbound Link has a 120kph design speed. Junction 9 would be rebuilt with a dumb-bell roundabout layout and the whole scheme would require three new bridges.

The proposed free-flow interchange will help to reduce congestion by removing the need for through traffic to use the roundabout, in turn improving safety.

Subject to a successful outcome, construction could start in 2021 and take around two years to complete.

Highways England project manager Simon Hewett said: “Junction 9 is a vital interchange between the M3 and A34. With more than 6,000 vehicles using the junction each hour during peak times, it can often become congested, with queues backing up onto the main carriageway.

“The proposals we are publishing today will resolve that by separating out local and long distance traffic. With the new dedicated link roads, through traffic will not have to stop at the roundabout, freeing it up for local traffic and commuters.”

Latest news

Hong Kong investor buys stalled £77m Manchester scheme site

Far East Consortium plans major residential scheme Angelgate site
8 hours ago

Heathrow calls for fresh ideas on airport expansion

Businesses or individuals are being called to pitch in ideas for third runway expansion
16 hours ago

Retentions Bill second reading pushed back to June

Construction (Retention Deposit Schemes) Bill reschedule
14 hours ago

BAM wins Bristol engineering building

Enabling works later this summer at the University of the West of England's Frenchay campus
18 hours ago

Midlands builder Stepnell expands south

New offices opened in Southampton and Poole
15 hours ago

Egis takes on M40 upkeep role from Carillion

French giant saves 95 jobs at crashed contractor
2 days ago

Robertson bolsters north west arm with O’Rourke hires

Peter Grieve joins as north west operations director
2 days ago

Shareholders revolt over Persimmon pay

AGM vote sees £75m bonus deal for chief executive agreed but 48% of investors vote against
20 hours ago

Competition fear over Tarmac Breedon concrete plants swap

Competition watchdog raises concern about ready-mixed supplies in South Wales and Lancashire
20 hours ago

Scottish quarry surfing lake approved

£10m project to create Scotland's first artifical surf park gets go-ahead
21 hours ago

Science Museum seeks builder for vast storage building

Firm to be picked in October for 300,000 sq ft warehouse near Swindon
2 days ago

Boost your online presence – join the new Enquirer Directory

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

Insurers slam fire test regime for building materials

"More realistic" lab tests demanded for cladding systems post Grenfell
2 days ago

£80m twin hotel plan for Manchester Airport

Ibis and Holiday Inn kick-start new £180m Airport City hotel district
2 days ago

Worker in plunge removing fall arrest bags from school site

Court hears edge protection was not up to industry safety standards
2 days ago

Mace to start £120m Crossrail office scheme

PLP Architecture reveals latest images of Farringdon scheme
2 days ago

Green light for Liverpool Monarchs Quay scheme

Next phase of King's Dock mixed-use scheme approved
2 days ago

Accident rates hit record lows for NASC scaffolders

Contractors representing 16,000 scaffolding operatives continue to reduce accidents
2 days ago

First packages awarded on £28m Milton Keynes office job

Galliford Try gets going on eight-storey complex
3 days ago

Network Rail to build £46m Wigan train depot

Preparation works are getting underway for Ince-in-Makerfield depot
3 days ago

Specialist trade bodies petition No 10 for payment reform

Unprecedented coalition of trade associations urge Prime Minister to act
3 days ago

Construction boss and developer jailed for contracts bribery

Skansen Interiors MD and and DTZ project manager sentenced
3 days ago

Murphy wins Wessex Water Trym Tunnel relief sewer

North Bristol tunnel scheme to start next year
3 days ago

Graphene concrete game-changer for industry

Exeter Uni scientists produce concrete with twice the strength and four times water resistance
3 days ago

Kier lands lead role in £19.4m Glasgow theatre revamp

Work to start in September revamping the Citizens Theatre
3 days ago

Hill boasts record year as partnerships margin hits 3%

Partnership housing drives growth at Hill as pre-tax profit hits £47m
3 days ago

CMS wins £10m glazing deal on BAM’s Atlantic Square job

Major package win on £100m scheme
3 days ago

Contractors fold before £2m site death fines

Judge hands out huge fines but firms are no longer in business
4 days ago

Green light for £350m Leeds South Bank scheme

Preparation works can now start with construction planned to start next year
4 days ago

Mace go-ahead for London £150m Hanover Square scheme

Great Portland Estates JV secures pre-let to start building work on Mayfair scheme
4 days ago

Contractor services