The busy road's being made two lanes in both directions between Segensworth and Titchfield - it's due to take 18 months.
Men On Trial Charged With Robberies
Four men have gone on trial in Winchester, charged over a string of robberies across the South Coast.
They include raids at the Nationwide bank in Havant in 2011 and the Nationwide in Fareham two weeks later - both times couriers delivering cash were robbed.
The men are also accused of burglaries and car thefts in Hampshire, Berkshire, Surrey, Wiltshire and Oxfordshire.
Stewart Last, 28, Richard Loveridge, 27, Lee Fitzgerald, 37, from Berkshire, and Andrew Smith, 27, from Surrey, deny the charges.
They relate to armed robberies of security guards and couriers delivering cash to banks and building societies between August 2011 and February 2012.
They are also charged with offences linked to stolen car number plates, burglaries at petrol stations, corner shops and supermarkets.
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