http://www.legislation.gov.uk/uksi/1990/2650/article/2/madeThe A604 Catthorpe-Harwich Trunk Road (Thrapston to Brampton Section and Slip roads) Order (No. 2) Supplementary Order (No 2) 1990Roads and highwaysRoad buildingKing's Printer of Acts of Parliament2011-07-04HIGHWAYS, ENGLAND AND WALES2The centre line of the new trunk road is indicated by a heavy black line on the deposited plan.