Milecastle 3 (Ouseburn) was a milecastle of the Roman Hadrian’s Wall. No remains exist, but it was thought to have been located at the junction of the A187 Byker Bridge and Stephen Street.
No evidence exists as to the configuration or type of Milecastle 3, though the curtain wall at this stage was almost certainly a narrow configuration.
In 1732 – John Horsley a British antiquarian surveyed the milecastle, recording its position.

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