The Planning Inspectorate has granted controversial planning permission to build 841 houses on land east of Maghull.
Countryside Properties and Persimmon Homes has been given the go-ahead for the development, despite objections from Bill Esterson MP and local councillors Patrick McKinley and Yvonne Sayers.
They claimed that a haul road, which would connect the site direct to the new M58 Junction 1, should be built to reduce the impact of site traffic on residents living nearby.
Mr Esterson said: “Residents of Maghull supported by Cllrs Patrick McKinley and Yvonne Sayers have made their concerns clear about the impact that dangerous and polluting construction lorries will have on their community.
“It is right that construction traffic won’t be allowed on the residential streets of Maghull but it makes no sense to use country lanes, some of which are impassable by HGVs.
“Taking the decision away from Sefton Council’s planning committee has made a mockery of localism.
“Persimmon should take this opportunity to show that they are a responsible business and build a haul road to spare residents the misery of construction traffic travelling along the country roads of Melling.”
The developer will be forced to make contributions to local amenities as well as building a flood relief channel through the site.
Mr Esterson added: “Although we will continue to push Persimmon to build a haul road, funding for a flood relief channel, a badly needed healthcare facility and an expansion to Summerhill Primary School are all very welcome.”