Milton Interchange Highway Improvement Scheme

Milton Interchange is positioned at the junction of the A34 and A4130 which is a key route for traffic entering the city of Oxford. This scheme improves the traffic flow around Milton Business Park and improve access to the A34 for local traffic travelling into Oxford. This junction serves as the main access point for the 8,000 employees based at the Milton Business Park and is a critical junction on both the Highways England and OCC highway networks.  

Our scope of works includes:

• Top-down construction of new relief route below the A34 dual carriageway
• A ‘hamburger’ link at Milton Interchange for traffic from the westbound A4130 heading onto the northbound A34 towards Oxford
• Construction of a new structure under the A34 to enable the hamburger link road located within the roundabout. This is being constructed within the existing embankment of the A34
• Extensive TM on both Highways England network and local network, as well as diversions of statutory undertakers’ equipment
• Widening of the Milton Park Link, eastbound A4130 and southbound A34 off-slip approaches to four lanes.

Achievements

Drone innovation
Building the bridge structure to bisect the roundabout has been the greatest technical challenge. Because of the live site environment and need to minimise disruption, we have had to build the structure in three phases.

To help us navigate these constraints and challenges, we have used BIM to configure the works and used drones to gather topographical data to inform the BIM model. This helped us understand the optimum construction and placement of bridge beams during phase 1 and phase 3 which were exact mirrors of each other.