sentences:  The turnpike trusts were authorised to erect gates, collect tolls, appoint surveyors and collectors, demand statute labour or its monetary equivalent, mortgage the tolls, elect new trustees, and undertake work necessary for repairing the roads.By 1750, most of the main roads between London and the provincial centres and some inter-provincial routes had been turnpiked.By the mid-1830s, over 1000 turnpike trusts controlled 35'000 km of main roads and disposed about 1.5 million pounds of toll receipts each year.