UKs longest road tunnel breaks through at Hindhead
Construction of the UKs longest road tunnel under land, near Hindhead in Surrey, is a step closer to completion after the tunnel excavations from the north and south met deep under the Surrey Hills.
The breakthrough to link the two tunnels is a milestone for the £371m project and was witnessed by transport minister Paul Clark. When complete, the A3 road tunnel will provide uninterrupted dual carriageway from London to Portsmouth and reduce traffic at a notorious bottleneck.
Approximately 30,000 vehicles a day will be taken away from the Surrey Hills – instead travelling deep beneath this protected landscape. The scheme will divert a length of 6.7km some four miles of the existing A3 Portsmouth Road on to a new alignment, with a 1.8km section about 1.25 miles that passes under the Devils Punch Bowl, placed in a twin bore tunnel, associated side roads and private access alterations, and the detrunking of a superseded section of the existing A3.
If it’s good enough for the Surrey hills, surely it’s good enough for the A82 between Tarbet and Ardlui?