Planners in Cumbria have voted the same way as their Lancaster counterparts and given permission for a 70m wind turbine at Burton Services.
Consent was required from South Lakeland District Council, whose planning committee met in Kendal on Thursday morning, in addition to Lancaster City Council, which gave approval last week.
Two metres of the turbine blades would encroach over the boundary into Cumbria.
It means Moto Hospitality Ltd can site the turbine on its land west of the M6, about 120 metres from the motorway.
The application attracted widespread opposition from parish councils in Yealand, Beetham and Burton.
Friends of Eden, Lakeland and Lunesdale Scenery (FELLS) said there was a ‘proliferation’ of turbines along the M6 and Arnside and Silverdale AONB voiced its concerns.
The structures already exist along the M6 at Over Kellet, Lancaster University and Garstang.