A brand new train line, which might be a multi-billion pound undertaking, might lastly give a serious airport a station.

The Bristol Airport Rail Link has been proposed since 2006, hoping to attach the town to the airport in a line of simply over 9 miles.

The Mayor of Bristol Marvin Rees then put plans for the transport system ahead in his State of the City Address in 2017 after it was an election marketing campaign pledge.

Last summer season, the West of England metro mayor and West of England Combined Authority (WECA) lead Dan Norris authorised a £15m examine into the prices and feasibility of such a undertaking.

Previous estimates of the Bristol Airport Rail Link have positioned the price of full development between £4bn and £18bn, in line with the New Civil Engineer.

Mr Norris has stated that the authority believes the undertaking can be the “right thing to do” although the prices to construct 4 new strains in Bristol make it practically unattainable.

Speaking on BBC Radio, he stated: “We've got enough money to carry on the study for now. I think the project is so unlikely as to be not possible but we still continue to look at all the different options that are being considered, because that's the sensible and right thing to do.”

Currently, proposals put ahead would see the development of 4 rail strains from Bristol to Bath, Bristol Airport, Emersons Green and Cribbs Causeway.

A tunnelling knowledgeable informed the New Civil Engineer that any subsurface work wanted to assemble the proposed Bristol underground can be “relatively easy”.

Mr Norris stated: “At the moment we have to do a cost-benefit analysis of all the different options that are currently being considered, one of which is the underground system that Marvin's keen on. Underground rail is hugely expensive and the whole economic situation has changed.

But Bristol Airport told the Express that it would support such a project by the local authority as it could potentially “transform Bristol”.

A spokesperson stated: “A mass transit system would transform Bristol and the surrounding region. It would boost productivity and growth, improve air quality, cut emissions, and allow people to travel predictably and with confidence to destinations across our city region.

“Bristol Airport is a key origin and destination for people moving around our region – travelling to and from our international gateway. We stand ready to work with bold and unified local leadership to design and deliver a mass transit system.”

Express.co.uk contacted West of England Combined Authority however on the time of publication, a remark had not been acquired.