Hadrian’s Wall – Milecastle 69 – Sourmilk Bridge
Roman Mile Castle in Carlisle
Milecastle 69 (Sourmilk Bridge) was one of a series of Milecastles or small fortlets built at intervals of approximately one Roman mile along Hadrian’s Wall. The mile fort was probably located near Beaumont, in the district of Grinsdale. Its exact location is not known. It was probably somewhere between Sourmilk Bridge (east side) and Park Farm west of Grinsdale. In 1858 a large number of stones were found near the bridge. A map from 1746 showed that a mill had stood on the east bank during this time, which was later demolished. The stones probably came from there too.
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Visiting Hadrian’s Wall – Milecastle 69 – Sourmilk Bridge