Significant transport improvements are coming to Southampton following the announcement of new government funding on 26 March 2026. The investment will support major upgrades to the Northam Rail Bridge and the A326 Marchwood Bypass, aimed at easing congestion and improving travel for residents.
Southampton City Council, in partnership with Network Rail, will replace the ageing Northam Rail Bridge with two wider structures. This project is considered vital for the city, as officials had previously warned that the current bridge could face closure to traffic within a decade without intervention.
In addition to the bridge replacement, the Department for Transport funding will support improvements to the A326 Marchwood Bypass. These works are expected to redirect port traffic away from busy city centre roads, providing relief for local residents and commuters.
Southampton Itchen MP Darren Paffey and Southampton Test MP Satvir Kaur have both welcomed the news. The funding comes as part of the wider government road investment strategy, which aims to future-proof key transport routes across England through to 2031.
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