A grade II listed structure the Cross Keys swingbridge was built in 1897 and is still the main road from Lincolnshire to Norfolk. Originally it was half rail and half road but the railway was closed in 1959. It is undergoing a refurbishment and being completely painted but has to remain open for both river and road traffic. It does pose a challenge. I am employed to run the safety boat for the project and so have a perfect platform from which to fly the drone.
