The commissioners took legal advice in 1824, and once satisfied that they were empowered to do so, built public wharves at Corps Landing and Frodingham Bridge, which were completed in 1825 and 1826. A new warehouse was completed at Driffield in 1826, and traffic increased, helped by reductions in the tolls as the navigation companies paid off their debts. When a bill to authorise the building of Hull docks was before Parliament, the commissioners unsuccessfully attempted to insert a clause giving free passage to boats from the Navigation which passed through the lower river but did not use the dock facilities.