The proprietors failed to raise all of the capital promised, and there were financial difficulties. The Commissioners of Sewers were unhappy with some of the work at Highbridge in 1830, and reported that the contractor "had run away", and work had stopped in 1831. The company had also failed to lodge £1,000 with the Commissioners which was required to cover any costs they might have as a result of the construction of the canal, and they sued for the money in 1831. Even Rennie threatened to sue, as much of his fee remained unpaid. The cost of construction was about £30,000, but it appears that some debts were never paid. On 16 December 1831 the proprietors borrowed £5,000 from the Exchequer at a 5% rate of interest.