M3

The M3 is 59 miles long and links south west Lon­don with Southamp­ton, pass­ing through the coun­ties of Sur­rey and Hampshire.

Con­struc­tion of the M3 began in 1971, and was com­pleted in stages until 1995.

M3 Traffic Information

Period : expect disruption until 06:00 on 23 January 2017. Location : The M3 westbound between junctions J8 and J9 . Status : Currently Active. Lane Closures : The hard shoulder is closed. Reason : Roadworks.

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Status : Pending. Lane Closures : Lanes 2 and 3 will be closed. Schedule : From 20:00 on 10 March 2017 to 07:00 on 11 March 2017. Location : The M3 eastbound between junctions J5 and J4A . Lanes Closed : There will be two of three lanes closed. Reason : Road repairs are planned.

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Location : The M3 eastbound entry slip at junction J3 . Status : Pending. Lanes Closed : All lanes will be closed. Schedule : From 20:00 on 18 February 2017 to 07:00 on 19 February 2017. Reason : Road repairs are planned.

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Status : Pending. Lane Closures : Lane one will be closed. Schedule : From 20:00 on 10 March 2017 to 07:00 on 11 March 2017. Location : The M3 eastbound entry slip at junction J4A . Lanes Closed : All lanes will be closed. Reason : Road repairs are planned.

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Status : Pending. Lane Closures : Lanes 1 and 2 will be closed. Schedule : From 21:00 on 20 January 2017 to 05:30 on 23 January 2017. Location : The M3 westbound entry slip at junction J2 . Lanes Closed : There will be two of three lanes closed. Reason : Road repairs are planned.

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M3 Road Projects

M3 Junction 9 Improvements

We will be upgrad­ing the junc­tion to allow free move­ment between the A34 and the M3.

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The M3 J6-8 Bridge Waterproofing Scheme

Replace­ment of deck joints and the deck water­proof­ing mem­brane for three bridges between M3 J6-8

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M3 Junction 6 Black Dam Roundabout Improvements

We will be car­ry­ing out works to con­vert the exist­ing Black Dam round­about into a junc­tion with traf­fic signals.

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M3 Junctions 2-4a

We pro­pose to improve the M3 by mak­ing it a smart motor­way between junc­tions 2 and 4

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