M74 | Junction 6 Bridge Refurbishment

M74 | Junction 6 Bridge Refurbishment

30 June 2021

Bridge Refurbishment Works


UPDATE (28/10/21): 

The critical tasks on the mainline M74 are now complete, the contraflow has been removed and the VMS have been deactivated. Amey will continue to work on an overnight-only basis to reconstruct the crossover VRS in the centre reserve on the mainline, this will be completed by the end of October. However, a programme of maintenance continues on slip-road structure M74S 6-6 40 and is as follows: 

Phase 1: (Traffic running Lane 1 with TVRS to work in nearside)

Surfacing: Monday 1st November and Tuesday 2nd November 2021 (dayshift) 

Laterally move TVRS: Wednesday 3rd November 2021 (nightshift) 

Total closure and TM switch: Wednesday 3rd November 2021 (nightshift 10pm to 6am)

Phase 2: (traffic running in hardshouder with TVRS to work in offside)

Carry out topo survey: Thursday 4th November 2021 (dayshift)

Mill out surfacing: Thursday 4th November 2021 (dayshift)

Remove verge & kerbs: Thursday 4th November 2021 (nightshift)

Concrete works & Waterproofing: Friday 5th November to Thursday 11th November 2021 (dayshift)

Install new kerbing: Thursday 11th November 2021 (nightshift)

Lay new binder course: Friday 12th November 2021 (dayshift)

Total closure: Friday 12th November 2021 (nightshift 10pm to 6am) 

Lay new surface course: Friday 12th November 2021 (nightshift)

Remove TVRS: Friday 12th November 2021 (nightshift)

Install permanent road markings: Friday 12th November 2021 (nightshift)

Phase 3: (traffic running in hardshoulder with roped safety zone to work offside)

Install bridge joints: Monday 15th November to Wednesday 17th November 2021 (dayshift)

Phase 4: (traffic running in Lane 1 with roped safety zone to work in nearside)

Install bridge joints: Thursday 18th November and Friday 19th November 2021 (dayshift)

Phase 5: Overnight closure

Remove all TM and reinstate all road markings: Friday 19th November (nightshift)

For the above, a single existing running lane will be maintained across the bridge throughout. A total closure of the affected slip road will be required from 10pm on Wednesday 3rd November until 6am on Thursday 4th November 2021 and a second closure will take place from 10pm on Friday 12th November until 6am on Saturday 13th November 2021

Traffic intending to join the A723 southbound carriageway from the M74 will be diverted via the A723 northbound onto Airbles Road, Airbles Road Roundabout, where traffic will be able to join the A723 in a southerly direction. 

Following completion of the above programme by Friday 19th November 2021. Works will recommence on the mainline M74 from Friday 29th November until Saturday 18th December 2021 on a series of overnight-only closures to finalise replacement of the bridge joints and installation of surfacing to several of the edge of cope hardstrips.


UPDATE 08/10/21): 

The contraflow system currently installed on the M74 Junction 6 works site is scheduled to be removed by Sunday 11th October 2021. In order to facilitate this there will be a series of overnight closures at this location with signed diversion routes in place. The programme for these is as follows: 


  • Friday 8th October 2021: Southbound total closure with traffic diverted via the off-slip road onto the A723 northbound to join Airbles Road. At Airbles Road Roundabout, traffic will join the A723 southbound carriageway and will be able to rejoin the M74 via the Motherwell on-slip road. 
  • Saturday 9th October 2021: Northbound total closure with traffic diverted from Junction 8 onto the A71, A72, and A723 northbound carriageway. From here, traffic will be able to rejoin the M74 in a northerly direction. 
  • Sunday 10th October 2021: Southbound closure and northbound off-side only lane closure. This is to install temporary VRS within the crossover and allow the erection of new, permanent safety barriers. Following the installation of the temporary VRS, all lanes will re-open on the M74 at this location and the current 40mph speed restriction will be removed. 
  • Monday 11th October 2021: M74 southbound off-slip road total closure to install temporary VRS for maintenance on the slip road bridge. A double off-side lane closure will also be required. 

From Monday 11th October until Thursday 9th November 2021 Amey will undertake essential bridge works to structure M74S 6-6 40 on a 24/7 basis. The existing running lane on this slip road bridge will be maintained throughout the works with no restrictions to traffic flows. 

The following closures will be required to reinstate the centre reservation barrier and close the crossovers.  


  • Tuesday 12th October until Thursday 14th October 2021: Double offside lane closure on the M74 to continue crossover barrier reinstatement works. 
  • Sunday 17th October until Wednesday 20th October 2021: Offside and adjacent lane closures on the M74 southbound, which will merge to a total closure between the Junction 6 slip roads. This will rejoin at the hard shoulder to complete crossover barrier reinstatement works. In addition, a northbound offside lane closure covering both crossovers will be in place. 


UPDATE (07/07/21): Following further review of M74 Junction 6 preparatory works planned this week, a northbound closure of the M74 between Junctions 8 and 6 will also be required from 8pm on Sunday 11th July until 6am on Monday 12th July 2021. Traffic intending to travel this route will follow signage to be diverted back onto the M74 via Junction 6 at Hamilton. This closure will ensure the safety of our workforce and road users while work is underway. 


Amey, on behalf of Transport Scotland, are undertaking essential bridge refurbishment works on the M74 at Junction 6.  

Phase One will be overnight-only (20:00 – 06:00) with enabling works commencing Monday 5th July until Thursday 8th July 2021 and will comprise of hard shoulder and slip road resurfacing, and gulley replacement works.  

The above works will involve closures of the A723 southbound to the M74 northbound slip road from Motherwell, and the A723 northbound to the M74 northbound slip road from Hamilton. The nearside northbound ‘slow’ lane will be closed, with traffic running on the offside northbound ‘fast’ lane during the works.  

Road users intending to join the M74 from either slip road during the above works will be diverted to M74 Junction 8 via the southbound carriageway of the M74, where road users will make use of the Canderside Toll roundabout to return onto the northbound carriageway of the M74.  

Phase Two will commence Saturday 11th July until Friday 23rd July 2021 on an overnight-only basis (20:00 – 06:00), and will involve construction of two 180m long crossovers within the centre reserve, in order to facilitate contraflow arrangements for the main construction scheme.  

This will involve closure to the offside ‘fast’ lane on the southbound carriageway, and closure of the northbound offside and adjacent lane on the northbound carriageway.  

During daytime (06:00 – 20:00), the southbound carriageway will be fully open. On the northbound carriageway, the offside lane will remain closed however full capacity will be maintained by utilising the hard shoulder as a live running lane. All slip roads will also remain open.  


The main construction scheme is scheduled to commence on Friday 30th July until Friday 8th October 2021. 

This scheme will benefit around 65,000 vehicles using this route each day, by improving the condition of the structure and reducing the need for more extensive maintenance in the future. 

The work will be carried out using continuous 24/7 traffic management on the southbound carriageway including contraflows, use of the hard shoulder, and narrow running lanes. Signed diversion routes will be in operation throughout and we thank road users for their patience while this essential work is underway. The work will be split up into subphases to accommodate the following diversions: 

Diversion One: Traffic intending to use the slip road which runs beneath the M74 and which connects the A723 northbound to the M74 southbound will be diverted instead at the slip road split to Junction 5 at Raith via the northbound M74. From here, traffic will join the southbound contraflow at Raith Interchange where the diversion will end.  

Diversion Two: Traffic intending to use the southbound A723 to northbound M74 slip road will be diverted onto the southbound slip road at the slip road split. Traffic will continue on the southbound M74 and use M74 Junction 8 to return onto the northbound carriageway. 

Diversion Three: Traffic intending to use the southbound A723 to southbound M74 slip road will be diverted onto the northbound slip road at the slip road split. Traffic will continue on the northbound M74 and use M74 Junction 5 Raith to return onto the M74 southbound carriageway.  

Variable Message Signs (VMS) will be erected at strategic locations throughout the surrounding areas to provide road users the option of utilising alternative routes to their destinations. During peak travel hours it is anticipated that the works area will experience increased levels of traffic. Road users are advised to plan ahead, allow extra time for their journeys, and consider travelling via an alternative route. 

Amey will also operate a 24-hour recovery service for the full duration of the works.  

STGO haulage travelling from North to South shall be held at M74 Junction 5 Bothwell southbound services within a designated holding area until such time deemed appropriate to pass through the roadworks area.  

Our operatives will follow strict physical distancing and hygiene protocols throughout the programme, in line with the Scottish Government’s COVID-19 guidance. 

Please note, all schemes are weather dependent and may be cancelled or rescheduled if weather conditions are not favourable.