M4 Junction 16 – Upcoming works
The layout at junction 16 was changed overnight on Sunday, 25th February and we would like to apologise for the disruption that this caused. The team has now increased the temporary signage around the junction and this has helped the updated layout. Also, we would like to remind road users that the traffic lights are currently set to a fixed timed sequence, which is not reactive to traffic volume. This is because the ongoing works are not yet at the stage where we can reinstate the system that detects traffic, however, this will be the case before the end of the project and the traffic light sequencing will be more efficient. Despite the recent cold weather the team has continued to make steady progress, completing the majority of drainage across the site and continuing to install ducts, kerbs, traffic signs and street lamps.

Surfacing and road markings
The team is planning to start resurfacing and adding road markings to the whole roundabout from Monday, 19 March, during a series of overnight shifts. However, due to the size of the machinery we need to use, there will be some lane restrictions and temporary closures around the junction while we work. These restrictions are essential to give the team a safe working zone, whilst allowing us to keep the roundabout open to traffic.

19 – 29 March inclusive from 8pm to 6am – traffic in contraflow from Great Western Way and onto the west side of the junction 16 roundabout and A3102. At the same time:
Frankland Road junction with Great Western Way closed – local traffic diverted via Frankland Road, Ramsden Road and Blagrove roundabout back to Great Western Way.
M4 eastbound entry slip closed – traffic diverted across junction 16 and onto the A3102 towards Royal Wootton Bassett. At the 1st island, return back along the A3102 and join the M4 westbound. At junction 17 exit the M4 and then return eastbound on the M4.
M4 westbound exit slip closed – traffic to continue to junction 17, then exit the M4 and return eastbound on the M4.
Hay Lane closed southbound (northbound open) – through-traffic will be diverted into Swindon and back to Hay Lane via the A3102, B4006, B4289 and A4289, before joining Redpost Drive, Peglars Way, Mill Lane and Wharf Road.
30 March – 2 April inclusive – NO WORKS

3 April – 5 April inclusive from 8am to 6pm – traffic in contraflow on the east side of junction 16 roundabout and temporary 3-way signals will control traffic to the south.
M4 westbound entry slip closed – traffic diverted down Great Western Way to Blagrove roundabout, and back up to junction 16 to join the M4 eastbound. Traffic will exit the M4 at junction 15 and return westbound.
M4 eastbound exit slip closed – traffic diverted to junction 15, then return along the M4 to exit at Junction 16.
From Royal Wootton Bassett or Hay Lane to M4 eastbound – traffic will need to travel down Great Western Way to Blagrove roundabout and back up to junction 16 to join the M4.
From Hay Lane to Great Western Way – traffic will be diverted onto the A3102 towards Royal Wootton Bassett. At the 1st island traffic will return back along A3102 and onto junction 16.
6 – 7 April inclusive from 8am to 6pm – Full closure of the A3102 at junction 16, for final surfacing and road markings. Diversion for through-traffic below.

** Please be aware that all dates may be subject to change **


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