Botley Bypass closure triggers 14-mile detour from Friday night
A 72-hour closure of the A334 and A3051 starting Friday night will force drivers onto a 14.5-mile diversion as Hampshire County Council begins the next phase of the Botley Bypass project. Manual traffic lights and phased roadworks will follow, with businesses urged to plan ahead.
Hampshire drivers face their first major disruption of the Botley Bypass project this weekend when the A334 and part of the A3051 shut down for essential construction work. From 9 p.m. on Friday 22 May until 6 a.m. on Monday 25 May, the A334 between Sherecroft Way and Hillsons Road will close completely, while the A3051 from YMCA Fairthorne Manor to its junction with the A334 will also shut down for the same period.
The county council has mapped out a signed 14.5-mile detour designed to handle all vehicle types, with route details posted at every junction. Authorities concede the closures will add unpredictable delays, especially during morning and evening peaks, and are urging road users to increase their travel time by at least 30 minutes.
Wangfield Lane and Maddoxford Lane will be closed to through traffic from the start of the closures, while northbound access from the A334 will be restricted on Reading Room Lane, Chapel Lane and Lockhams Road. These measures aim to prevent unsuitable traffic using narrow residential streets as rat runs.
Key Points
- ⏰ Closures run 9 p.m. Fri 22 May to 6 a.m. Mon 25 May
- 🛣️ 14.5-mile diversion signed for all vehicles
- 🚦 Manual traffic lights from Mon 25 May to Mon 1 Jun
After the Bank Holiday weekend, the A334 will reopen at 6 a.m. on Monday 25 May with 24-hour temporary two-way traffic lights until 6 a.m. Monday 1 June. These lights will be manually operated between 7 a.m. and 7 p.m. to manage queues and prevent gridlock through the construction zone.
The council has also scheduled a second closure window from 6 a.m. Monday 1 June through to 6 a.m. Monday 8 June for additional roadwork on the A3051, when the same diversion will remain in place. A new temporary road layout will be introduced at 6 a.m. on 1 June to help distribute traffic while the bypass connection takes shape.
📋 By The Numbers
- £4.2 million — Allocated for 2026 road repairs including Botley Bypass
- 1 metre — Maximum height increase planned for raised roundabout sections
While businesses in Botley remain open throughout the closures, traders report a sharp drop in footfall whenever traffic is rerouted. Local hauliers warned that the diversion adds at least 20 minutes to standard delivery routes, increasing operational costs for small operators already struggling with rising fuel prices.
💡 Pro Tip
Use real-time traffic apps that integrate live council feeds; the county updates diversion signage every two hours during active closures to reflect any lane changes or temporary closures.
Hampshire County Council insists the bypass remains on schedule for completion by summer 2025, with the current closures marking the start of the roundabout integration phase. The wider project aims to cut peak-time delays on the A334 by up to 45 percent once the new route connects with the M3 at Chilworth.
| Road | Closure Period | Diversion Status |
|---|---|---|
| A334 (Sherecroft Way to Hillsons Road) | Fri 22 May 9 p.m. to Mon 25 May 6 a.m. | Full closure; 14.5-mile detour |
| A3051 (Fairthorne Manor to A334 junction) | Fri 22 May 9 p.m. to Mon 1 Jun 6 a.m. | Full closure; 14.5-mile detour |
| A334 (post-Bank Holiday) | Mon 25 May 6 a.m. to Mon 1 Jun 6 a.m. | 24-hour temporary traffic lights |
The county’s website will be offline for IT maintenance from 5 p.m. on 22 May until 11 p.m. on 25 May, pushing drivers to visit mgroupltd.com/road-closures for live updates. Residents and businesses are advised to download the council’s free travel app for push notifications on lane openings and closures.
- 📊 The bypass is projected to cut Botley’s peak congestion by 30 percent after full completion
- 🔍 Manual traffic lights will operate only during daylight hours to reduce electrical load
- ⚠️ Smaller roads near the site will see camera enforcement to stop illegal shortcuts
Council engineers confirmed that once the new roundabout rises one metre above existing ground level, drainage and safety barriers will follow before final surfacing. The phased approach limits total road closure time to under three weeks per segment, ensuring commercial traffic can plan around predictable windows.