The first bridge was built in 1936, but blown by the Dutch in 1940. The Germans rebuilt it, and it was open for traffic from 1943 onward.
I am sorry to deny this, but the second bridge became ready and opened for traffic in August 1944, other sources say the bridge was open for traffic early September 1944.
Further, historians say that the middle section of Arnhem boatbridge, provisional replacing the in May 1940 destroyed trafficbridge, was dismantled in the first week of September 1944. This is questionable. Aerial photo's, made by the RAF, prove that the Arnhem boatbridge was still intact on 10 September 1944, thus one week before the start of Operation Market Garden. Therefore was this boatbridge, located just east of the Rhine harbour inlet "Oude Kraan" one of the objects for B Coy of John Frost's battalion.
In the battleplan of John Forst's battalion was written; "The task given to the 2nd Battalion was:- To seize the three Bridges over the RHINE at ARNHEM."
These three!! bridges were (1) the railroad bridge near Oosterbeek, (2) the main traffic bridge of Arnhem (code name Waterloo) AND (3) the Arnhem boatbridge (codename "Putney")
And further was in the battleplan written; "On reaching the Boat Bridge, B Company were to seize the Bridge, and hold it as the left flank of the Battalion sector in Phase 11."
and (in Dutch) https://sites.google.com/site/freedomtrailarnhem/13-roermondsplein#_Codenaam_%E2%80%98Putney%E2%80%99
There are contradictional battle reports, and contradictional eyewitness accounts too, regarding the existence or not existence of the still useable Arnhem boatbridge in the evening of 17 September 1944.
Another question that historians probably ignore. Why were the available boats, laying along the Rhine Quay and in the Oude Kraan harbour, during the evening of 17 September not used by some of John Frost's troops to cross the Rhine River in an attempt to take the south ramp of the traffic bridge? These boats of various size were visible on RAF aerial photo's made on 19 september 1944.
Why are these mysteries not sufficient (enough) exposed by the historians?