The purpose of the trip was an international rail safety conference, and NS staged a tour of notable grade crossings around the Amersfoort area. This particular grade crossing is a rat's nest of safety challenges: it cut through an active station, is adjacent to a school and an al fresco restaurant, and the roadway has motor vehicle, bicycle, and pedestrian lanes. NS is using some sophisticated sensoring and AI-enabled video to appropriately monitor and signal this crossing. But that wasn't what interested me most--I was intrigued by those cement arch catenary towers, which appeared to be unique to this line. Our NS host explained that this line was built in the middle of WWII when steel was in short supply, so these concrete arch bridges were used. They are currently considered 'heritage' architecture, which means that when one of them was damaged in a recent traffic incident, NS had to replace it with a custom made structure using WWII era techniques and materials. |
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