Live from National Highways

M3 Roadworks

Lane closures, overnight works and planned schemes on the M3, straight from the National Highways feed.

1Running now

0Severe delay

4Starting soon

Home › Traffic › Roads › M3 › Roadworks

Moderate Northbound 🛑 now

M3 northbound Jct 9 entry slip road closure

Overall Scheme Details: M3 and A34 both directions Jct 9. Narrow lanes and 24/7 lane closure for major improvement work.

✅ until 06:00 Mon 1 Nov

Severe Southbound Starting soon 🌙 tonight

M3 southbound Jct 5 to Jct 6 carriageway closure

Overall Scheme Details: M3 southbound Jct 4 to Jct 6 - carriageway and lane closures for resurfacing work

✅ until 06:00 Fri 16 Oct

Severe Northbound Starting soon 🌙 tonight

M3 northbound Jct 12 to Jct 11 carriageway closure

Overall Scheme Details: M3 both directions Jct 7 to Jct 13 carriageway closure for carriageway - reconstruction/renewal

✅ until 06:00 Fri 16 Oct

Moderate Westbound Starting soon 🌙 tonight

M3 Westbound Jct 1 exit slip road closure

Overall Scheme Details: A316 Westbound Snakey Lane to M3 Jct 1 Slip road and lane closure for sign replacement

Diversion: Diversion via Local Authority and National Highway network

✅ until 05:30 Fri 16 Oct

Moderate Both directions Starting soon 🌙 Sat 17 Oct

M3 Jct 9 Roundabout partial closure including lane closures

Overall Scheme Details: M3 both directions Jct 8 to Jct 11 and A34 both directions Three Maids Hill to M3 Jct 9. Carriageway, slip road and lane closures for major improvement work.

✅ until 06:00 Sun 18 Oct

❓ M3 roadworks — Frequently Asked Questions

Are there roadworks on the M3 right now?

Yes — National Highways is reporting 1 set of roadworks running on the M3.

Is the M3 closed tonight?

4 closures are scheduled on the M3 in the next 72 hours. Each one is listed above with its window and diversion.

When are M3 roadworks usually carried out?

Most National Highways lane closures on the M3 run overnight and are lifted before the morning peak (07:00–09:30). Full carriageway closures are usually weekend nights, with a signed diversion.

🛣️ Data from National Highways · All UK roadworks · Overnight closures · M3 live traffic
Roadworks change at short notice. Always follow signs and signals on the road.

🚗 M3 pages

M3 live traffic →

M3 Motorway · 52 miles. Live incidents, junction status and collision history.

🔢 M3 junctions

J1 J2 J3 J4 J4A J5 J6 J7 J8 J9 J10 J11 J12 J13 J14

🚧 Roadworks elsewhere

🇬🇧 All UK roadworks → 🌙 Tonight's overnight closures → 🚧 M25 roadworks → 🚧 M27 roadworks → 🚧 A34 roadworks →

🚛 Car recovery along the M3

Broken down on the M3? Pick the nearest town and call a local firm direct:

On a motorway? If you can, get onto the hard shoulder or into an emergency area, leave by the left-hand doors and wait behind the barrier. Stuck in a live lane: stay in the car with your seatbelt on and hazard lights on, and call 999.

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