A question mark hangs over the £9 billion Lower Thames Crossing \- just days before the government is due to sign off on it. Transport minister Louise Haigh is set to rule on a Development Consent Order (DCO) over the coming week for the controversial project. If granted, it will effectively give the ambitious project the green light. But with the government seeking to slash public spending to tackle the £22bn “black hole” left by the previous Tory administration, there are fears it could be scrapped. One campaign group described the plans for the crossing as “nonsensical” and demanded it be s…