Sid, in 1927, the Dutch government started planning for bigger main roads all over the country, and as there's lots of rivers to cross, a special buro was setup to organize them bridges. That's how some of 'm got to be of similar design I guess.
The one at my hometown was the last in the series...
The Dutch are still very thankful and humble at the same time for what the Allies did for us, beat the Germans, liberate the country and such.
Even now that the majority never experienced it, it still lives strongly ....