Unfortunately the bridge does have a sign that reads “Weak Bridge”, and that really has to do more with the heavier traffic that it carries now compared to when it was built. Trucks vs horses and carts? fortunately the traffic is controlled by traffic lights that allow cars to use the single lane that the bridge has, everybody gets a turn, and there are no minibus taxi’s pushing in.
(Update 27/09. The railway tunnel is blocked off and fenced off too, so I could not get close to it. However, the other side I may still go hunt down. The results of that hunt may be found at Tewkesbury’s Railway Remnants)