Sometimes experiments are needed in order to find out how to effectively reach your audience. It can be with the use of print media, such as newspaper articles, leaflets, broschures and the like. But it can also mean the use of various forms of technology, such as the internet and social networking. Aside from wordpress, which powers the Chronicles both as an original as well as the areavoices version, people have used facebook and pininterest to post their pics of their favorite bridges. Yet most of these have been individual bridges and not that of a tour guide, like the Chronicles has been posting since its launch in 2010.
The Bridgehunter’s Chronicles has just started using Instagram recently, and I had a chance to experiment with putting a tour guide together, using the app , during my most recent visit to the city of Aue in western Saxony.
Located 25 kilometers southeast of Zwickau where the Zwickauer Mulde and Schwarzwasser (Black Water) Rivers meet, Aue is lined up along both rivers with houses that are between a century and two centuries old. The town prides itself on mining and therefore, one can find many places where silver is produced and transported, both past and present. It also has a top premere soccer team in Erzgebirge Aue, which plays in the second tier of the German Bundesliga. Eight kilometers to the west is the town of Schneeberg, where several Medieval buildings have been considered historically significant by the government and UNESCO, including its prized cathedral. However getting there is almost only possible by bus or car, for biking up there would be as biblically challenging as Moses climbing up Mt. Sinai to speak to God and get the Ten Commandments.
Speaking from experience, if you have to go to Schneeberg from Aue, please don’t do that and take the bus. 😉
Getting back to the story, I happened to take some downtime between the time of an appointment in Schneeberg and the time I had to return to Jena. The only problem was the camera that I usually use for my bridgehunting tour was left home by accident. Bummer as it was and seeing many sights considering surprising to the eye of the photographer and pontist, I decided to use Instagram on my Smartphone and started taking pictures.
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For the first time in its history, the Chronicles has a tour guide where Instagram is almost exclusively used. When you click on the picture below, you will be taken to the page where you can see all the bridges I visited and photographed. A map is provided below the picture, showing you where they are located. You can also access the Chronicles by clicking on the instagram symbol on the left side under Social.
As I’m looking for some information on the bridges profiled here, if you know of some facts about the bridges, please leave a comment here or contact me via e-mail, using the contact form provided. The facts about the bridges are found in the Google Map. All you need to do is have a look at the pictures on Instagram and feel free to comment.
During my tour of Chemnitz in western Saxony a few days ago, I happened to come across this rather unusual crossing. Spanning the Kappelbach Creek approximately 150 meters west of the River Chemnitz and the Pfortensteg in the city of Chemnitz, this crossing is located at a park where the bike path runs parallel to the river through the city with 240,000 inhabitants. By first glance, my impression was that it was a typical concrete beam bridge built in the East German era like many other bridges that had been destroyed in World War II. However, when crossing it, one can see an unusual building-like structure that seems to be walled into a high cliff. Looking at the cliff more closely, it extends approximately 500 meters from the Bierbrücke near the district of Kassberg to the north, towards the intersection where Highways 95 and 173 meet to the southwest. Of which, approximately 150 meters seemed to be walled with bricks and concrete, making it appear that Chemnitz once had an underground passage that started at the park and networked its way to the castle. It is known that there were underground passageways at the Kassberg and Bier Bridges- one of which served as a passage for prisoners, another for transporting beer to the walls of the city, where the multi-story houses are located today.
Yet when looking at the bridge and this structure, this definitely was the work of an East German engineer, who like many others wanted to paint Chemnitz with a communst face, which was the reason why the city was called Karl-Marz-Stadt from 1953 to 1990. The building presented some skeletal features that are geometric with rectangular shapes- each row with a different pattern. While this skeletal structure now houses pipelines providing warm water to the city center, one has to wonder what original purpose this skeletal structure had. Because the height of the cliff from the ground to the top is between 20 and 30 meters- about the length of the crossing itself- and its approximate location to some key judicial areas, such as the district and labor courts, it is possible that at one time it served as a large elevator providing people and bikes with a lift to see the judge. That would put the construction date to the 1960s when electric elevators were becoming useful for high-rise buildings and the government district of Karl-Marx-Stadt was functioning like a state, extending its reach of jurisidiction to as far west as Jena and Gera, as far south as the Ore Mountains (Erzgebirge) and Vogtland, as far east as Freiberg and as far north as Riesa. Most of the judicial district may have been located at the top of the hill at the site of today’s district courts, which had been a traditional location because of the nearby castle. After the Fall of the Wall in 1989 and the subsequential Reunification a year later, that elevator no longer served as that function and was therefore converted to its present form. But more evidence is needed to prove this.
As for other functions, the building or a prison complex are concerned, given the lack of space it had between the outlet and the walled cliffs it is anchored into, that would be impossible because of the need to add 3-4 stories with shafts with handles for people to climb up or down.
But could this building actually had housed this elevator at that time or was it really meant for a pipeline cover? We know that it is as old as the structure that is now a pedestrian bridge- 50+ years old and still functioning like other GDR buildings at that time. But was this building an elevator or a skeletal unit?
The Rappbodetalsperre Brücke near Elbingerrode (Harz) is open to pedestrians wishing for a view of the dam and lake.
ELBINGERRODE (HARZ)/ MAGDEBURG, GERMANY- The Harz Mountains in Saxony-Anhalt and Lower Saxony is famous for its antique, sometimes Medieval villages with Fachwerk houses (like Quedlinburg), hiking and skiing. It picturesque landscape makes it one of the most visited places in central Germany.
In Elbingerrode, south of Wenigerode, there is now another reason for visiting the Harz Mountains, but in the form of the world’s longest pedestrian bridge. The Rappbodetalsperre Suspension Bridge has been open since May 7th, breaking all records that had been set most recently. The bridge is located just 80 meters northeast of the dam, overlooking the Bode Reservoir to the southwest and the Schiefeberg Mountains to the east and north, in the direction of Quedlinburg and Wenigerode. With a height of 100 meters above the Bode River, one can take a breath-taking view of the region, while enjoying the swinging motion the bridge offers. The bridge overtakes the Sky Bridge in Sochi, Russia in terms of length and height, but is comparable to some of the longest and highest bridges in China and Malaysia.
Workers needed a total of five years to build the structure- three of which consisted of planning, which was followed by almost two years of construction, where towers were constructed on both ends of the valley, then the wire cables were draped over the towers. Suspender cables were erected both between the roadway and the main cables, as well as some support cables that were anchored between the bridge and the cliffs. Workers tok advantage of the slate rock to solidify the foundations and towers, which made spinning the cables and constructing the roadway much less complicated. Some photos taken by German public radio station MDR shows you in detail the contraption of the structure (click here).
Apart from walking across the bridge, in the near future, people can also bungee jump 75 meters toward the river from the bridge deck. The only caveat is that the suspension bridge is a toll bridge, where people can pay six Euros to cross the unique structure.
This might scare away acrophobes even more, in addition to the height, yet it will definitely not dissuade bridge enthusiasts, naturalists and tourists from visiting the bridge. Even a fellow pontist in the US is looking forward to a post card of the bridge.
Put that on your memo sheet. 😉
The Rappbodesperre Pedestrian Bridge has a total length of 483 meters, with the main span of 458 meters (1502 feet), with a height of over 100 meters above the dam and river. The cable construction has a pulling force of 947 tons with the cables themselves being anchored into the rocks. The bridge took five years to be built and it overtakes the Sky Bridge in Sochi, Russia in terms of main span length by 20 meters.
This article is co-produced with sister column, The Flensburg Files, which you can view the areavoices version here.
A few days ago, I took advantage of nice weather here in Germany and embarked on a what I’ve touted as an Ironman bike tour through western Saxony. Starting at Hohenstein-Ernstthal, the tour lasted seven hours, going to Glauchau, then along the Mulde to Rochlitz, encountering steep hills with grades of up to 20% and heights of up to 400 meters. Then it was to Geithain before boarding the train for Glauchau before having biked the last seven kilometers to neighboring Meerane. All in all, 85 kilometers by bike and every bridge visited was worth every drop of sweat.
While I will mention more about the tour in a later article, I have a found a net of bridges worth posting. This is located in Penig, about 23 kilometers northeast of Glauchau along the Mulde. We have two major highways crossing over each other while crossing the Mulde, yet there are more crossings in this area than those two. Before giving the way the answer, here’s my guessing quiz question for you:
Look carefully in the picture. How many bridges at this site can you identify and can you find out how old they are? This includes the tunnel.
For the number, here are the options:
a. 2 b. 3 c. 4 d. 5 e. 6 f. 7
A map with the location of the bridges is enclosed here:
The answers will be provided when the article about bridge touring along rivers will be posted in a few weeks. This will include the tour of the Mulde plus a couple river examples. Stay tuned! 🙂
This is a throwback article dating back to April 2011, when the author toured the bridges along the Grand Canal. Going in the opposite direction enroute to Kiel, this part focuses on the remnants of the Alt Eider Canal, which originally snaked its way across Schleswig-Holstein from Kiel to Tönning via Rendsburg and Friedrichstadt. While the western segment was converted into a river when the Baltic-North Sea Canal was built between 1890 and 1895, the eastern segment, running from Rendsburg to Kiel, was abandoned and as a consequence, many areas have become nothing more but ponds and small creeks with locks that no longer are in use. Using a map for this tour guide, here are some of the relicts worth visiting while on tour. 🙂
After an hour of lunch, combined with a trek combing up along the west end of the Kieler Fjorde, passing the university and the state parliamentary building along the way, I ended up in the northernmost suburb of Holtenau, the starting point of the Grand Canal. Measuring about 95 km long and approximately 60 meters wide in many areas, it resembled the Panama Canal, which slices through the isthmus connecting North and South America. The only difference between the two is the landscape, which the Grand Canal goes through mostly flat land. Before the trip to Kiel to start on the journey, I bought a magazine bearing the name “Nord-Ostsee-Kanal” 2011 version from a book store in Flensburg and while staying at the hotel on the city’s east end of Mürwik, I learned about the canal’s history, let alone the origins, and decided to make a parallel bike tour where I could find and photograph the bridges along both canals, although I would risk not getting from Kiel to Heide before sundown. While my prediction did come true, there was no regret doing what I did, for I would not have had the chance to share my experiences travelling along the Alte Eider and the Grand Canals at the same time.
The Alte Eider Canal had a width of about 30 meters and was 4 meters deep in many areas. While its starting point was in Kiel Holtenau, its path represented a long snake slithering quietly through the flat lands, as the canal made a lot of really sharp turns. Since many ships passing through the canal at the time of its completion had no engines (they would come in 1830s), most of them were pulled by horse and manpower to avoid any collisions with the banks. The canal swerved through many small present-day villages with many locks along the way. They include the villages of Knoop, Pojensdorf, Rathmannsdorf and Schinkel northeast of the present-day canal and Kluvensiek, Bovenau, and Klein Königsförde located to the south and west of the Grand Canal close to Rendsburg. And with each village, there were series of locks- more than that of the canal today in its entire length- many of whom are all but relicts today, where people can come and see what they looked like when the Alte Eider had its heyday.
Each canal lock consisted of a bridge, built using a bascule design which permitted traffic to horse and buggy and ships when necessary. There are many different types of bascule (or draw) bridges that were created and developed. The Scherzer rolling lift style was used on the Lindaunis Bridge over the Schlei. In Schleswig-Holstein, double leaf bascules were used most often to span narrow canals like the ones that existed along the Alte Eider. Originating from neighboring Holland (today known as The Netherlands), double leaf bascules consist of two half-bridge spans, each of them supported by cables or chains that are anchored by towers located on each end of the canal. For a textbook style, the cables or chains are connected to counterweight, located above each tower, which if lowered by manpower (or in today’s case machine), lifts the half-span to its vertical position to allow the ships to pass through. To lower the half-span, the weight is lifted up and back to its position above the tower, and the roadway is anchored down in a horizontal position, allowing horse and buggy to pass. An example of this bridge can be found in one of the pictures below. These types are still being used today in Schleswig-Holstein for small crossings including those along the Eider River in the western part of the state. More on that in the second segment. At least eight different locks had bridges of this type in service before the Alte Eider was made obsolete by the Grand Canal, one located in each village. This included the ones in Rendsburg, Kluvensiek and Klein Königsförde, which is profiled at the end of the column.
When the Grand Canal opened to traffic in 1895, the Alte Eider Canal lost its significance and was subsequentially put out of service. Much of the canal was filled up with silt, while other sections were dismantled and buried with dirt by farmers in an attempt to convert it into farmland. Some of the locks were dismantled with the bridges removed, while others were left as a landmark signaling the canal’s heyday. One can see some of these landmarks today when trekking along the remains of the Alte Eider Canal. This includes a Toll house in Pojensdorf, which has since been converted to a museum dedicated to the history of this architectural landmark. There is a restaurant in Rathmannsdorf, located in front of the lock, which serves local delicacies. In Schinkel, a mansion-style hotel built in the early 1800s still exists today, despite being privately owned. Mills can be found in places like Kluvensiek and Bovenau. Parts of the Alte Eider were converted to harbor for yachts in Rendsburg. And one can find bridge relicts in Klein Königsförde and Kluvensiek, the former being a replica of the one that existed before the Grand Canal opened, the other partially filled in but has a history of its own, when looking at the tower’s portal bracings.
Of the eight bridges that existed, four have been profiled here, although one of them no longer exists. They are arranged in the order of direction of the canal, from Kiel to Rendsburg, starting with the first bridge at Pojensdorf.
Pojensdorf Bridge: Spanning the Alte Eider Canal
Spanning the Alte Eider between Knoop and Pojensdorf, this steel stringer bridge may have replaced a lock and bridge that existed when the canal was in service. The bridge serves as the entrance to the village of Pojensdorf. While the bridge represents a typical short-span stringer bridge used on many roads in Germany, if one goes beyond the bridge and enters Pojensdorf, one will appreciate the landscape that was created by the old canal, let alone the Packhaus in Pojensdorf which was converted into a museum devoted explicitely to the history of this unique canal.
This (now former) drawbridge is probably the most ornamental of the bridges that spanned the Alte Eider Canal. The bridge was built in 1849/50 with the portal towers being designed by Carlshütte Iron Works in Rendsburg. Founded by Markus Hartwig Holler in 1827, the iron works company contributed a great deal with the construction of bridges and other forms of infrastructure along both the Alte Eider and the present Baltic-North Sea Canals up until the Grand Canal’s completion in 1895. However, the company’s heyday did not come until the Ahlmann family took over the business in 1909 and Kate Ahlmann took over the business when her husband Julius died in 1931. She had as many as 3000 workers at the iron works company by the 1950s and contributed a great deal to the economic growth in Rendsburg. Shortly before her death in 1963, a museum dedicated to the history of Carlshütte opened with numerous displays of artwork made of iron, which can be seen today. Sadly though, Carlshütte went into decline after her death and despite surviving one bankruptcy in 1974, the second one in 1997 led to the company’s liquidation. Carlshütte was named after Carl von Hessen, who governed Schleswig-Holstein at the time of the company’s founding.
When the canal was made obsolete by the Grand Canal, the lock was filled in with the exception of a small culvert to allow water to pass underneath. This included the bridge itself even though the two towers still remain standing and can be seen from the road heading to Kluvensiek from Bovenau and the Alte Eider bike trail.
Drawbridge at Klein Königsförde:
Coming up on Klein Königsförde, one will see a replica of a piece of history spanning the Alte Eider Canal on the old locks. Originally there was a bridge that was constructed in the mid-1800s using the double-leaf bascule design, and consisting of towers with an arch design. Yet before the Grand Canal was completed in 1895, the bridge was taken down and not replaced for over 100 years. In the early 1980s a replica of this bridge was constructed using mostly wood for the structure and steel chains for tower support as well as lifting the roadway, even though the crossing is in a fixed position. The purpose is to show the tourist what the bridge looked like during the days of the Alte Eider Canal. The bridge received the Europa Nostra award for its artwork in 1989 and is still in use for pedestrians and cyclists only. A park is located next to the structure on the west end to provide an opportunity to rest and view the village, located on the eastern side of the canal.
Subtracting the city of Lübeck, located on the border to Schleswig-Holstein and Mecklenburg-Pommerania, if there is a city that can be considered the one with the most number of bridges worth seeing and learning about in Schleswig-Holstein, Rendsburg would be the place to look at. The city can pride itself for its High Bridge (which will be mentioned in the later columns), but it can also pride itself on the history of bridges that spanned both the Alte Eider and Grand Canals. The Rendsburg Drawbridge is one of the bridges that made the city popular. While there were numerous bridges of this type that were built in and around Rendsburg, this one stands out as it served a main road connecting Hamburg and Flensburg. Furthermore it was one of a few built using iron and may be one of the structures built using the iron from its production facility Carlshütte. Sadly, when the new canal was completed in 1895, the bridge lost its importance and was subsequentially removed. The canal eventually was converted into a harbor, which is still in use today for smaller boats entering and exiting the Grand Canal. Interesting enough was the fact that before the canal was made obsolete, an arch bridge took its place for a while but it is unknown when it was built and when it was removed. Also worth noting is the fact that the drawbridge was overshadowed by bigger and longer bridges spanning the longer canal- one for the trains (High Bridge) and one for the road.
After a tour of the bridges along the Alte Eider Canal, the last segment of the revised tour guide series along the Grand Canal will focus on Kiel, its easternmost terminus. Apart from some neat bridges in the city center, there are some to the east of the city along the Schwentine that are worth noting and visiting. The Schwentine also empties into the Baltic Sea through the Kiel Fjorde but opposite the terminus of the Canal.
Location: Baltic-North Sea Canal at Rendsburg, Schleswig-Holstein, Germany
Description: Main span: Cantilever Warren through truss with transporter (main span), steel trestle approach span (south) and loop approach (north)
Length: 7 km (total) Of which: 2468 main span; loop approach 4.5 km
Built: 1913 by Friedrich Voss and C.H. Jocho of Dortmund
Travelling north to Flensburg on the Schleswig-Holstein-Express (the SHE) one evening in May 2010, I was chatting with four passengers heading home to the Rum capital of the world, talking about break-ups, broken marriages and partners cheating on them, when we suddenly found ourselves taking off from the ground. To think that most of the German state is flat consists of mainly farmland and coastal areas, to go from travelling on the ground to travelling in the air in a matter of seconds is like Eliott and E.T. flying in the air by bike. Yet the sound of metal to metal contact, especially when going over the steel towers revealed that whatever we were crossing was huge, the spectacular view of the lights of the town below and the body of water covered in emerald green lights was gorgeous. After going through the steel truss mechanism, we made our descent in a curly-Q fashion before touching the ground and stopping at our next station. Our conversation had stopped in favor of the structure’s admiration, a sign that homage needed to be paid to a gigantic symbol that bridges the past with the present, the lover on one place with one in the other, and the impossible with the reality.
Especially the last one is what describes the Rendsburg High Bridge, spanning the Baltic-North Sea Canal in Rendsburg, located between Hamburg and Flensburg. The bridge was the masterpiece of Friedrich Voss, who had built two other structures along the Grand Canal at Hochdonn and Kiel as well as numerous others in the northern half of the country, concluding the two-span arch bridge at Friedrichstadt. It took 1.5 years to build the main attraction along the canal, which after 104 years, it still serves as the anchor that makes the Grand Canal and Rendsburg the place to visit. What Voss did with the bridge was unthinkable, impossible and even insane in the eyes of many locals during that time. While steel trestles and a through truss design were his signatures for long-span structures like the aforementioned bridges, Voss needed a main span that would carry both horse and buggy (and later cars) as well as rail traffic. Henceforth as one of the feats, Voss chose the cantilever Warren span, whose roadway would serve rail traffic connecting Hamburg and Neumünster to the south and Flensburg and Scandanavia to the north. Hanging from the main span is the transporter span, which even today carries cars, bikes and pedestrians across the canal between Rendsburg and Aldorf. The transporter operates four times an hour in both directions during the day and takes 4-5 minutes to cross, half as long as when crossing the entire bridge via SHE.
Even more unique is the north approach. Already in existence was the train station for it served rail traffic between Kiel and Husum, the problem came with how the approach span should descend from 50 meters above water to just over zero. This was where Voss referred to the history books and chose the loop approach. Using the Hastings Spiral Bridge as reference, the loop approach provides travelers with an opportunity to gradually glide down from the bridge, making a circle of 360°. The 1895 bridge over the Mississippi River was the first bridge to feature this loop approach for engineers and bridge builders at Wisconsin Bridge and Iron Works had the problem of the bridge extending into Hasting’s business district, which already had numerous buildings and traffic at that time. Therefore, the south approach consisted of the loop approach, thus encouraging cars to glide down into the city center like a marble.
The problem was similar with the north approach, as it consisted of much of Rendsburg’s city center and housing area, combined with remnants of the old canal and the harbor area connected with the new canal. Therefore, Voss and his men devised a plan where a loop approach would feature first a series of steel trestles at the height of between 40 and 50 meters above water level, followed by earthen berms with concrete arch spans crossing main streets, after the descent of 40 meters. A Warren deck truss span crosses the rail line as it approaches the end of the loop. The total length of this loop approach alone is 4.5 km. The area the loop encircles consists of housing and therefore was later named Schleife.
On 1 October, 1913, after 1.5 years of work, Voss and 350 of his men from the bridge-building firm C.H. Jucho of Dortmund completed the work, and the bridge was open to traffic. The bridge and transporter complex has operated almost unaltered ever since, sustaining minimal damage in World War II. The bridge was rehabilitated with rust protectant being added to the steel bridge between 1993 and 2012. The rail line was electrified in 1995, which resulted in the portal and strut bracings of the through truss span being lifted. Instead of the two-rhombus portal bracing, the main span now had A-frame portals, high enough for trains to pass through. Sadly though, the transporter portion of the bridge is being replaced even as this article is being reproduced for this page. On 8 January 2016, the transporter collided with a ship as it was passing underneath the bridge. The boat operator and another passenger were injured in the wreck. After thorough investigations by the local authorities and the Ministry of Transportation, it was concluded that the transporter could not be salvaged and was therefore removed from the bridge. A replacement replicating the original transporter is currently being constructed and should be installed by 2017/18.
I had a chance to visit the bridge again in 2011, this time filming the crossing of the bridge and its transporter, but also following the path of the bridge from the start of the loop approach on the ground to the main span. While I never got a chance to see the Spiral Bridge as it was torn down in 1951, the Rendsburg High Bridge is nothing anyone has ever seen before. It is amazing just to be in a small suburb that is encircled by the loop approach, listening to trains cross it on an hourly basis. Its tall and towering trestles cannot be missed when travelling through Rendsburg. But the main span is just as amazing, for it has a total height of 68 meters, visible from 20 kilometers, making it one of the tallest structures along the Grand Canal. But I also noticed that the bridge with its wonderful work of art has not yet been recognized on the national and international scale. With the Vizcaya Bridge being nominated as a UNESCO World Heritage Site in 2013, the Firth of Forth Bridge scheduled to be nominated in 2015, the Rendsburg High Bridge Complex should be considered another UNESCO site as well because of the engineering feats that Voss accomplished in building this superstructure but also because the bridge still functions as a normal crossing of its kind today, just like it did when it opened to traffic in 1913. This is something that has made Rendsburg famous and makes it one of the wonderful works of art in Schleswig-Holstein, Germany and central Europe. Already it was given the Historische Wahrzeichen der Ingenieurbaukunst in Deutschland Award (Historic Recognition of the Works of Engineering in Germany) in 2013, on its 100th birthday. Chances are, more accolades will follow for this iron lady, whose total length of 7 kilometers (2,400 m main span) still makes it the longest railway bridge in Germany.
To close this documentary about this bridge, the third and most important part of the Tour along the Grand Canal, there is a saying that applies to any bridge enthusiast. You are never a true pontist unless you visit at least a couple key engineering works. In my book, one should really pay homage to the Rendsburg High Bridge. It is an engineering work of achievement that is underrated and something that awes every engineer to this day. Every engineer has his creative talents, which Voss had when building this bridge. It has withstood the test of time and is still a work of art one should see, when visiting Germany. It is hoped that it will one day be a UNESCO site. It will eventually for it deserves this honor.
You can view the photos of the Rendsburg High Bridge via facebook site. Click here to have a look at every aspect photographed during my visit in 2011.
Some videos of the bridge can be viewed below as well:
And some links to provide you with some more information on the Rendsburg High Bridge:
This bridge was used as a logo for the Bridgehunter’s Chronicles from 2011 until its retirement and replacement with the current logo in 2015 using another Schleswig-Holstein bridge in its place, the Fehmarn Bridge. This is what the Rendsburg variant looked like.
The location of the Rendsburg High Bridge and the train station can be found on the map here:
In 1920, an American engineer, Claude Allen Porter Turner (CAP) designed two different bridge designs that were supposed to simplify the way bridges are constructed. The first was the Turner Flat Slab, a design where the decking portion of the concrete slab was strengthened, thus eliminating the need of extra piers and it would encourage the spans to be longer than usual. The second is a modified version of the Warren truss, where additional lateral beams are constructed midway through the A-portion of the truss, thus creating an A-frame for each panel. Both of these concepts were practiced on the Liberty Memorial Bridge in Bismarck, North Dakota. Constructed in 1922, the bridge featured three Turner through truss spans of 476 feet each, plus the Turner flat slab approach spans totalling 1105 feet- 625 for the west spans and 480 for the east side. It was the only known work for the engineer, whose career started at Gillette-Herzog Manufacturing in Minneapolis in 1900 but then started his own business after declining an offer to relocate to Chicago. The product of the American Bridge and Foundation Bridge Companies remained in service until its replacement in 2008. It was believed to have been the only one of its kind built…..
…..that is until this recently discovery in Chemnitz, Germany!
Located just two kilometers south of Chemnitz Central Railway Station along the Dresden-Hof-Nuremberg Magistrate at Bernhardstrasse, this pony truss span resembles the same Turner design as the Liberty, but with two unique differences: 1. The truss span is pony and 2. The endposts are vertical. Like the Liberty, the connections are riveted, even in the A-frames of the Warren. Yet some unique features of the truss include the curled cap at the top of the endpost. The end post itself has an I-shape. It is unknown what the length of the bridge is, but it is estimated to be between 60 and 70 meters long. The width is 10 meters between the trusses, the sidewalks on the outer edge is 2-3 meters, thus totaling the width of 16 meters. As the East German government built or imported truss bridges during its 40 years existence, whose designs were mainly Warren (and many modified versions of it) and had not much design to it, it is likely that this bridge was constructed during the 1920s, maybe the 1930s, and survived the bombings of Chemnitz during World War II. 90% of the city center was destroyed by 1945 and 70% of the houses and buildings, dating back to the 1800s were either in shambles or badly damaged. This bridge may have survived the bombing unscathed. Yet the lack of scars from the war might lead to a dispute over the bridge. It may have been rebuilt using replacement parts, but most likely in the late 1940s to encourage passage over the magistrate. If that was the case, then the bridge was built before the Soviets gained full control of its militarized zone, which became the German Democratic Republic (a.k.a. East Germany), while Chemnitz was renamed Karl-Marx-Stadt, a name that remained on the maps until German Reunification in 1990.
With this in mind, let’s look at the following questions to be solved regarding this bridge:
When was this bridge built?
Who designed the structure? Did this engineer use the Turner design or was it just simple coincidence?
Lastly, if this bridge is considered a Turner truss, are there other designs of its caliber that exist? If so, where?
What do you know of this bridge, let alone the Turner truss? Share your thoughts either on facebook page or by using this contact form. A tour guide on the bridges in Chemnitz is in the making and if there is enough information, this bridge will be added. Let’s see if we can solve this mystery surrounding this bridge, shall we?
Best of luck and looking forward to the findings. 🙂