http://www.legislation.gov.uk/uksi/1997/1237/article/2/madeThe A46 Trunk Road (Newark to Lincoln Improvement) (Brough Bypass) Order 1997Roads and highwaysRoad buildingKing's Printer of Acts of Parliament2011-07-04HIGHWAYS, ENGLAND AND WALES
2.

The new highway which the Secretary of State proposes to construct along the route described in the Schedule to this Order shall become a trunk road from the date when this Order comes into force.