Editing River Nene (section)

===Thrapston===
[[File:Thrapston Bridge.jpg|thumb|right|200px|The Nine Arched Bridge at Thrapston]]

At Denford the river divides into two channels, one of which is used for navigation. The channels approach the town of [[Thrapston]], passing under two adjacent viaducts. One carries the busy [[A14 road (Great Britain)|A14]] trunk road; the other carries the disused railway track bed. Between the town of Thrapston and the village of [[Islip, Northamptonshire|Islip]], the Nene is spanned by a low nine-arched bridge. Just north of Thrapston the river forms part of the {{convert|73|ha|acre|order=flip}} of [[Titchmarsh Nature Reserve]].<ref>[http://www.titchmarsh.info/reserve.htm Titchmarsh Nature Reserve]</ref> The reserve, designated in 1989, consists of two lakes, a woodland, river banks and areas of grass and scrub in which some ponds have been dug. The reserve is operated by the [[Wildlife Trust for Bedfordshire, Cambridgeshire and Northamptonshire]]. At [[Aldwincle]] another tributary, called [[Harpers Brook]], joins the Nene from the north-west. Harpers Brook flows between gravel pit lagoons before converging with the river. The river flows south of [[Oundle]] passing [[Barnwell, Northamptonshire#Barnwell Country Park|Barnwell Country Park]] and Oundle Marina under a bridge of the [[A605 road]]. At {{gbmapping|TL116976}}, the [[Roman Britain|Romans]] [[bridge]]d the river with [[Ermine Street]] in the first century. Between Oundle marina and Peterborough the Nene falls, with navigation passing through 11 locks on the way.