Babworth SB was situated on the LNER at the Northern end of West Carr Road (which can be seen behind the SB).
Before Babworth bridge was built, the box controlled the mechanical gates on the main road between Babworth & Retford.
The bridge was built on the 11th of February 1937, this would then divert the main road away from the railway and eventually see Babworth crossing closed and the closure of the SB. Picture added of bridge work in progress below.
Unfortunately three rail workers were killed and 17 passengers were seriously injured when an express train ran into the rear of a shunting goods train.
The crash was caused by driver error.
Thanks to Peter Churchman, I have now added these two colour photo's, showing a better view of the box.