GLAUCHAU (SAXONY), GERMANY- Last week in the Chronicles’ Instagram page, there were a pair of photos of the progress that is being made with the Hirschgrund Viaduct, a multiple-span arch bridge spanning the ravine at the castle complex south of Glauchau’s city center. As I’ve been reporting up until now, the original bridge dating to the 1700s is being rebuilt after having sat abandoned for over four decades and having been in danger of collapsing under its own weight. With spring in the air, I took an opportunity to get a closer look at the bridge, apart from my usual vantage points, which were from both ends of the bridge. With all the scaffolding that has “encased” the bridge, this was the closest way to find out how it has progressed since my “sniper” shot of the red arches taken in the fall on the eve of a concert at St. George’s Church.
And with that I found a couple observations worth noting:
- The bridge was being layered with slabs of concrete, bit by bit, filling in the arches and making its way up.
- There was a pile of stones that are on the eastern side of the bridge- assumedly salvaged from the old structure and waiting to be reused and
- More curiously, vertical posts were sticking out between the arches.
With number 3, I wanted to find out what they were used for, so I got ahold of the city and one of the engineers for an inquiry. This is what I received for an explanation per e-mail (after having it translated):
The load-bearing system of the bridge consists of transverse walls on the piers and self-supporting longitudinal walls, which are then veneered. The inside of the bridge is filled with lightweight porous concrete.
In simpler languages, the newly-rebuilt bridge will have a skeletal system featuring horizontal slabs supported by the vertical piers planted between the arches. All of them will be covered in layers of concrete and then masked to make it appear historic like its original form. Should this be the case, it would not be the “in-kind” restoration of an arch bridge, meaning building it beginning with the arch and then in layers, stone-by-stone and then filled in to make sure the structure is stabilized. Yet it would represent the modern form of restoring the bridge, as it has been seen with some of the bridges restored in Germany, including those in Thuringia, Berlin and Bavaria. That would still make the arch bridge historic but with “braces” to ensure it lasts longer and is able to withstand the increasing weight and number in traffic. With the Hirschgrundbrücke itself, when reopened, it will serve pedestrians, connecting the castle complex and the park across the ravine.
While there is no concrete date as to when the project will be finished and when the grand “re-opening” will take place, there are some other curious facts that will be mentioned in a tour that is scheduled to take place this weekend. On May 11th at 10:15, 11:00 and 11:45 there will be a tour of the construction site with many questions and photo sessions available. This is all part of the informational Meeting at the Castle Complex that will include what has been completed and what will be the next phases in renovating the castle- namely the grounds and the park. All of which will start at 10 and be finished after 12:00. A link to the page can be found here.
In either case, more updates on the Hirschgrundbrücke will come in the Chronicles. Stay tuned. In case you haven’t taken a look at Glauchau’s Bridge tour guide, check out this and others by clicking here.