Approximately 20% of the network is suitable for commercial boats of over 1000 tonnes[3] and the VNF has an ongoing programme of maintenance and modernisation to increase depth of waterways, widths of locks and headroom under bridges to support France's strategy of encouraging freight onto water as part of her sustainable development programme—a survey by Price Waterhouse Coopers[when?] showed that 75% of French companies were willing to switch to barge transport. A major current initiative is the cross-border Seine-Scheldt project which will provide a continuous wide-gauge navigation from Le Havre to Antwerp.[4]