Historic Structures and Glasses: Restore vs. Replacement in Simpler Terms

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Co-written with sister column, FF new logo

The discussion about the preservation and reuse of historic places has existed since the 1950s, thanks to the preservation laws that have been in place. The German Preservation Laws were passed in 1958, whereas the Historic Preservation Laws that established the National Park Service and National Register of Historic Places in the USA were enacted in 1966. Both serve the lone purpose of identifying and designating places unique to the cultural identity and history of their respective countries. Furthermore, these places are protected from any sort of modernization that would otherwise alter or destroy the structure in its original form. Protected places often receive tax credits, grants and other amenities that are normally and often not granted if it is not protected or even nominated for listing as a historic site.  This applies to not only buildings and bridges but also to roadways and highways, windmills, towers of any sorts, forts and castles, citadels and educational institutions and even memorials commemorating important events.

Dedicating and designating sites often receive mixed reactions, from overwhelming joy because they can better enjoy the sites and educate the younger generations, to disgruntlement because they want to relieve themselves of a potential liability.

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Since working with a preservation group in western Saxony on saving the Bockau Arch Bridge, a seven-span stone arch bridge that spans the Zwickau Mulde between Bockau and Zschorlau, six kilometers southwest of Aue, the theme involving this structure has been ownership. The bridge has been closed to all traffic since August 2017 while a replacement is being built on a new alignment. Once the new bridge opens, the 150-year old structure will come down unless someone is willing to step in and take over ownership and the responsibilities involved. . Taking the structure means paying for its maintenance and assuming all responsibility for anything that could potentially happen. And this is the key here: Ownership.

Who wants to own a piece of history? To examine this, let’s look at a basic example of a commodity where two thirds of the world’s population wear on a regular basis- the author included as well: glasses.

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The author’s sunglasses: the older model from 2005 on top; the newest pair from 2018 at the bottom.

Ever since Marco Polo’s invention, glasses have been improved, innovated and modernized to not only make the person look great in appearance. It also helps them to better see the environment surrounding them, regardless of whether they are near-sighted or far sighted, have astigmatism or require bi-focals to read, or if they want protect their eyes from the sun in the form of shades. Glasses can be plastic or metal (or even both). And like the historic structures, the materials can be recycled if no one wants them. Yet by the same token, many of us love to keep them for the purpose of memories or give them away to those who need them. For over 30 years, I have worn nine pairs of glasses and two pairs of sunglasses; this does not count the eight years that I primarily wore contact lenses, which was during my time in high school and college. Like our historic structures, glasses have a life span. They are worn until the frames develop rust and corrosion, the vision changes or they are broken.

In some cases, many look for a new frames because they want to “look cool” in front of their peers. The “look cool” mentality has overtaken society to a point where it can be applicable to about everything: cars, clothing, houses and especially historic places and structures of interest. Basically, people just ignore the significance of these structures and things that had been built in the past, which hold memories, contribute to the development of a country, region or even community, or are simply fashionable. Still in spite of all this, one has to do something about the glasses, just as much one has to do something about the historic building.

So let’s take these two pairs of sunglasses, for example. Like in the picture above, the top one I was prescribed by an optometrist in 2005; the bottom one most recently in June 2018. The top one is a combination of plastic and steel- the temples, ends and hinges are made of steel; the eye wires are plastic. The lenses are made with Carl Zeiss branded glass with a sealcoat covering to protect it from scratches.  The bottom ones are plastic- frames, temples and nosepiece; the lenses are plastic but with a sealcoat protectant and dimmers to protect the eyes from the sun. The brand name is generic- no name.  The difference is that the changes in the eyes required new sunglasses for the purpose of driving or doing work outside.  As I wear the new sunglasses, which are not as high quality but is “cool,” according to standards, the question is what to do with the old sunglasses?

There are enough options to go around, even if the sunglasses are not considered significant. One can keep the old pair for memory purposes. Good if you have enough space for them. One can give them away to someone who needs them. If they are non-prescription lenses, that is much easier than those with a prescription. With the prescription lenses, one will need to remove them from the frame before giving them away. Then there is the option of handing them into the glasses provider, who takes the pair apart and allows for the materials to be recycled.  More likely one will return the old pair to the provider to be recycled and reused than it would be to give them away because of the factors of age, quality of the materials and glass parts and especially the questions with the lenses themselves. One can keep the pair, but it would be the same as leaving them out of sight and out of mind.

And this mentality can be implemented to any historic structure. People strive for cooler, more modern buildings, infrastructure or the like, but do not pay attention to the significance of the structure they are replacing in terms of learning about the past and figuring its reuse in the future. While some of  these “oldtimers “ are eventually vacated and abandoned, most of them are eventually torn down with the materials being reused for other purposes; parts of sentimental values, such as finials, statues and plaques, are donated to museums and other associations to be put on display.

The Bridge at Pointer’s Ridge. Built in 1910 by the Western Bridge Company of Omaha, NE. The Big Sioux River crossing was one of five bridges removed after years of abandonment in 2012. Photo taken in 1999 when it was still open.

One of examples that comes to mind when looking at this mentality are the bridges of Minnehaha County in South Dakota. The most populous county in the state whose county seat is Sioux Falls (also the largest city in the state), the county used to have dozens of historic truss bridges that served rail and automobile traffic. As of present, 30 known truss bridges exists in the county, down from 43 in 1990, and half as many as in 1980.  At least six of them are abandoned awaiting reuse. This includes a rails-to-road bridge that was replaced in 1997 but has been sitting alongside a gravel road just outside Dell Rapids ever since.  A big highlight came with the fall of five truss bridges between Dell Rapids and Crooks in 2012, which included three through truss spans- two of which had crossed the Big Sioux. All three were eligible for the National Register. The reasons behind the removal were simple: Abandoned for too long and liability was too much to handle

This leads me to my last point on the glasses principle: what if the structures are protected by law, listed as a historic monument?  Let’s look at the glasses principle again to answer that question. Imagine you have a couple sets of glasses you don’t want to part ways with, even as you clean your room or  flat. What do you do with them? In the case of my old sunglasses, the answer is simple- I keep them for one can reuse them for other purposes. Even if I allow my own daughter to use them for decorating dolls or giant teddy bears, or even for artwork, the old pair is mine, if and only if I want to keep them and allow for use by someone else under my care.  The only way I would not keep the old sunglasses is if I really want to get rid of them and no one wants them.

Big Sioux River Crossing at 255th Street: One of five bridges removed in 2012 after decades of abandonment. Photo taken in 1999.

For historic places, this is where we have somewhat of a grey area. If you treat the historic place as if it is protected and provide great care for it, then there is a guarantee that it will remain in its original, pristine condition. The problem is if you want to get rid of it and your place is protected by law. Here you must find the right person who will take as good care of it as you do with your glasses. And that is not easy because the owner must have the financial security and the willpower just to do that. Then the person taking it over does not automatically do what he/she pleases. If protected under preservation laws you must treat it as if it is yours but it is actually not, just like renting a house.  Half the places that have been torn down despite its designation as a historical site was because of the lack of ownership and their willingness to do something to their liking. Even if there are options for restoration available, if no one wants it, it has to go, even if it means taking it off the historic registry list to do that.  Sometimes properties are reclaimed at the very last second, just like the old glasses, because of the need to save it. While one can easily do that with glasses, it is difficult to do that with historic places, for replacement contracts often include removal clauses for the old structure, something that is very difficult to rescind without taking the matter to court.

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In reference to the project on the Bockau Arch Bridge in Germany, we are actually at that point. Despite its protection as a historic structure, its designation was taken off recently, thus allowing for the contract for the new bridge at the expense of the old structure to proceed. Yet, like with the pair of old glasses, last ditch attempts are being made to stop the process for there are possible suitors willing to take over the old structure and repurpose it for bike and pedestrian use. While neither of the communities have expressed interest, despite convincing arguments that the bridge can be maintained at a price that is 100 times less than the calculated amount, the group working to save the bridge is forming an association which will feature a network of patrons in the region, willing to chip in to own the bridge privately. Despite this, the debate on ownership and the bridge’s future lies in the hands of the state parliament because the bridge carries a federal highway, which is maintained on the state and national levels. Will it become like the old pair of glasses that is saved the last second will be decided upon later this fall.

To summarize briefly on the glasses principle, glasses and buildings each have a short lifespan because of their functionality and appearance. We tend to favor the latter more than the former and therefore, replace them with newer, more modern and stylish things to keep up with the pace. However, the older structures, just like the discarded pair of glasses, are downgraded on the scale, despite its protection under laws and ownership. When listed as a historical site, the proprietor works for and together with the government to ensure its upkeep, just like lending old glasses to someone for use, as long as the person knows he/she is “borrowing” it. When it is not listed , they are either abandoned or torn down, just like storing the glasses in the drawers or even having them recycled. However the decision is final if and only if no one wants it, and this could be a last-second thing.

The Bridge at Iverson Crossing south of Sioux Falls. Built in 1897, added to the National Register in 1996. Now privately owned. Photo taken in 1998.

We cannot plan ahead for things that need to be built, expanded or even replaced, for there may be someone with a strong backbone and staunch support who will step in the last minute to stake their claim. This applies to replacing older, historic structures with modern ones that have less taste and value. In the face of environmental issues we’re seeing globally on a daily basis, we have to use and reuse buildings and other structures to prevent the waste of materials that are becoming rarer to use, the destruction of natural habitats that may never recover but most importantly, remind the younger generations of our history and how we got this far. While some of us have little memories of our old glasses in schools with the exception of school class and party photos, almost all of us have memories of our experiences at, in, or on a historic structure that deserves to be recognized and kept for others to see. It’s just a matter of handling them, like the glasses we are wearing.

 

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The Bridges along the Baltic-North Sea Canal Part II: The Rendsburg High Bridge

Rendsburg High Bridge in Rendsburg, Germany Photo taken by the author in April 2011

Information:

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.

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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.

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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.

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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.

Author’s note:

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:

http://www.rendsburger-hochbruecke.de/

http://www.move-team.de/artikel/rendsburg.html

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:

 

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2016 Ammann Awards Ballot Part I

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Route 66 Gasconade Bridge in Missouri. Photo taken by Roamin Rich

For instructions in English, please go to the areavoices version of the Chronicles (click here). Für die in der deutschen Sprache, bitte zum Blog The Flensburg Files gehen (clicken Sie here).

BEST PHOTO:

 

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BEST EXAMPLE OF A RESTORED HISTORIC BRIDGE:

Information on these bridges are available via links:

Long Meadow Bridge (MN): http://thebridgehunter.areavoices.com/2016/10/28/long-meadow-bridge-open-to-bike-traffic/

Green Bridge in Des Moines (IA): https://www.facebook.com/media/set/?set=oa.1826891580920201&type=3

Houck Iron Bridge in Putnam Co. (IA): https://blog.jimgrey.net/2014/09/26/restored-and-repurposed-the-houck-iron-bridge/

Fort Morgan Rainbow Bridge (CO): http://www.fortmorgantimes.com/fort-morgan-local-news/ci_30393446/city-earns-award-rainbow-bridge-rehab-project

Wagon Bridge in Hemphill Co. (TX): http://www.prweb.com/releases/2016/08/prweb13632078.htm

Bird Island Bridge in Chicago: http://www.chicagotribune.com/suburbs/daily-southtown/news/ct-sta-division-street-bridge-st-0807-20160805-story.html

Molly’s and Rogers Landings US 66 Bridges (OK): http://www.route66news.com/2011/10/12/mollys-landing-saves-part-of-old-route-66-bridge/

Harahan Bridge in Memphis (TN): http://www.bizjournals.com/memphis/news/2016/09/27/video-tour-the-mississippis-new-big-river-crossing.html

Beaverkill Covered Bridge in Sullivan Co. (NY): http://cdn.equipmentworld.com/painstaking-restoration-of-historic-covered-bridge-in-the-catskills-nears-completion/

Wolf Road Bridge near Cleveland (OH): http://bridgehunter.com/oh/cuyahoga/bh49083/

Hamilton Co. Park Bridge (IN): http://cdn.equipmentworld.com/indiana-festival-celebrates-three-historic-bridges-joined-together-to-form-one/

Maple and Lafayette Bridges in Fayetteville, AK: https://www.fayettevilleflyer.com/2016/12/05/city-to-celebrate-re-opening-of-historic-maple-and-lafayette-bridges/

Dodd Ford Bridge near Mankato, MN: http://mankatotimes.com/2016/06/30/ribbon-cutting-for-historic-dodd-ford-bridge-set-for-july-5th/

Eau Claire Railroad Viaduct (WI): http://bridgehunter.com/wi/eau-claire/bh36335/

LIFETIME ACHIEVEMENT:

 BACH STEEL: Nels Raynor, Derek Pung, Lee Pung, Andy Hufnagle, Brock Raynor and Nathan Holth- Several Bridges saved through in-kind restoration (restoring to its original form, including Farm Lane, Paper Mill and Martin Road, as well as their newest project: Springfield Bowstring Arch.

Christopher Marston: Chris has been working for Historic American Engineer’s Record for almost 30 years, documenting and collaborating successfully to preserve many historic bridges. Interview here: http://thebridgehunter.areavoices.com/2016/10/06/an-interview-with-christopher-marston-of-habs-haer/

Nick Schmiedeler: It unknown how many years he has been a pontist, but Nick has found more abandoned “Elvis” bridges than a typical pontist in his/her lifetime. Record of his findings here: http://bridgehunter.com/profile/Nick_Schmiedeler

Royce and Bobette Haley: Known as Bridge Road Warriors, this couple has found and photographed more bridges in a span of two years than anyone in his/her lifetime. More on their work here: http://bridgehunter.com/profile/roycehaleyIII

John Marvig: Before 2010, no one really dared to photograph railroad bridges, that is until John arrived. Since then, 10 states and thousands of bridges profiled and photographed as can be seen here: http://johnmarvigbridges.org/

Kaitlin O’shea: For over a decade, she has been running the website Preservation in Pink, providing some interesting educational aspects to historic preservation, including bridges. And this over a good coffee and company with the flamingo: http://thebridgehunter.areavoices.com/2016/12/02/interview-with-kaitlin-oshea-preservation-in-pink/

Ian Heigh: For many years, this engineer has been responsible for maintaining the Scottish National Railway and especially the longest bridges in the country: Firth of Forth and Firth of Tay. More here: https://www.youtube.com/watch?v=z_vZjvTuSJw

MYSTERY BRIDGE:

Before voting, check out the information on the bridges being voted by clicking here. If any problems, please type in Mystery Bridge. The following candidates are numbered from 62 to 76. Two votes for the US and two for the international versions are allotted here.