A421 Scheduled for Weekend Closures in November

A segment of an A-road is slated for full closure during the initial two weekends of November to facilitate the installation of six steel beams, each described as “the length of a Boeing 737 aircraft,” at a new bridge. The A421 will be completely shut down for a distance of five miles (eight kilometres) in both directions, spanning the area between Renhold, Bedfordshire, and the Black Cat roundabout, located south of St Neots, Cambridgeshire. Gareth Moores, National Highways programme manager, stated: “Each beam will be carefully lifted into place, inch-by-inch, using a 750-tonne crane.” This operation is an integral component of the agency’s £1bn 10-mile (16km) dual carriageway initiative, which aims to connect the A428 Black Cat to Caxton Gibbet in Cambridgeshire and is projected for completion in 2027. Mr Moores further remarked: “The scale and complexity of this engineering feat cannot be overstated and marks a significant moment for our scheme.” Each beam weighs 130 tonnes and measures 37m (88ft) in length, which National Highways characterized as “the same weight as a fully grown blue whale and length of a Boeing 737 aircraft.” These beams are designed to form the primary structure of a new Roxton Road bridge, which will incorporate a new westbound slip road and an eastbound link from the A421 to the A1. Diversion routes will be implemented from 21:00 GMT on 1 November to 05:00 on 4 November, and again from 21:00 on 8 November to 05:00 on 11 November. Eastbound traffic will be directed via the A603 at Cardington to the A1 northbound at Sandy, continuing to the Black Cat roundabout. Westbound traffic will utilize the identical diversion route in the reverse direction. Mr Moores commented: “Closing the road ensures we can complete this beam lift safely, protecting both our workers and the travelling public.”