The Forge junction at Telford Town Centre was awarded relatively late, to the company "Norwest Holst". The junction precipitated the construction of Telford Shopping Centre, and the central commercial area, as the exchange was upgraded to allow traffic from the motorway to join and exit in both directions. The Forge to Cluddley section, from junction 5 to junction 7, opened to traffic in December 1975. The Hilton Park to Forge section, from the M6 to junction 5, opened in November 1983. The motorway cost 65 million pounds to build, which when adjusted for inflation would come to approximately 150 million 2006 GBP.