Work to improve largest junction on England’s motorway network now complete

Work to improve journey times on England’s largest gyratory roundabout is now complete, National Highways has announced. Junction 23 on the M25 in Hertfordshire is the single biggest gyratory on the whole of the National Highways network. At about 1.2km in circumference, the junction sees some of the highest traffic flows on the M25. The […]


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