Lansing, Michigan- Entries are still being taken for this year’s annual Iron and Steel Preservation Conference. The two-day event will take place on Friday and Saturday, October 18-19 at the Lansing Community College West Campus, located at 5708 Cornerstone Drive in Lansing. With a couple exceptions, this conference has been held annually and focuses on welding and other industrial techniques, using historic bridges as examples, as the state has many of them still in use, a third of which have been credited through the technical expertise of those who have participated in the workshop and has done a lot of work with historic bridge preservationists and welding experts.
The events on each day will be from 8:00am to 5:00pm. According to the coordinator, Vern Mesler, the Conference will feature the following:
Day One of this conference is primarily lecture, and Day Two participants will have opportunities to see Demonstrations of actual preservation techniques and have hands on learning opportunities.
Day 1 – Speaker’s Forum: Presentations on the rehabilitation work recently completed on Michigan’s Cut River Bridge on U.S. Highway 2 in the Upper Peninsula by Michigan Department of Transportation personnel who were directly involved in the rehabilitation work. (Lloyd Baldwin, cultural and historic resource coordinator for MDOT, will lead these sessions from the initial planning stages to the completion of the rehabilitation work.)
Presentations on issues related to riveted and bolted connections and on the damaging effects of pack rust on metal structures. Presentations on the role of riveting in new construction and design.
The presenters at the Friday event:
Lloyd Baldwin, Cultural and Historic Resource Coordinator (MDOT)
“Cut River Bridge Rehabilitation”
Andrew Zevchak & Mario Quagliata (MDOT)
“Bridge Rehabilitation Design Overview”
Christopher Garrell, PE (AISC)
“Exploiting the Resiliency of Built-up Steel Members”
Robert J. Connor, PhD (Purdue University)
“Research and Evaluation of Pack-out Corrosion in Steel Built-up Members at Purdue University”
Steve Howell, Ballard Forge
“Hydraulic riveting introduction”
Steve Howell and Lansing Community College Staff
“Hydraulic Rivet Demonstration”
Day 2 – Hands On Demonstration: The experienced staff of craftsmen at Lansing Community College will demonstrate electric arc welding processes, braze welding, and an introduction to the industrial rivet process (both field riveting and shop hydraulic riveting).
The event is open to all who are interested in the profession of welding and/or preservation of historic bridges and workshop participants will experience the use of the aforementioned welding demonstrations and other industrial processes during hands-on sessions and learn how these processes are used in the preservation of historic metals and new construction. One of the key centerpieces of this conference will be the Cut River Bridge along US Hwy. 2, which had recently undergone extensive rehabilitation using these welding techniques that will be presented at the conference (for more on the bridge, please click here).
Breakfast and lunch will be provided for both days. Participants will need to book their own lodging accomodations. For more information and to register for the event, please click on the link below, which will lead you directly to the conference website and registration page:
Call for help to save a historic bridge in Missouri; A city in Saxony to receive three new bridges; Man pees off of bridge onto ship; A historic bridge gets a new home at a park in Indiana and at a church in Massachusetts; Changes to take place for the Chronicles.
Calls to Halt MoDOT’s plan to demolish Gasconade Bridge
Hazlegreen, MO:The future of the Gasconade Bridge near Hazlegreen is in the balance. Between now and July 5th, the Missouri Department of Transportation (MoDOT) is collecting information from residents concerning the multiple-span through truss bridge that was built 95 years ago but has been closed to traffic since 2015. A replacement span is being constructed on a new alignment to carry a frontage road which used to be Route 66. Should the majority favor keeping the bridge, then it will be up to MoDOT, who had built the structure, to find a way to keep it out of the hands of the wrecker. Information on how you can help can be found by clicking here.
Flöha to Receive Three New Bridges
Flöha (Saxony), Germany-Eight months after a fire destroyed the Apfelsinebrücke (Orange Bridge) near the city center, the city council approved a deal to construct a new bridge that spans the River Zschopau near the City Park Baumwolle. Unlike the previous structure, which was built in the early 1980s, this one will be lower and without steps thus allowing for cyclists to cross. The cost will be 800,000 Euros. It is one of three bridges that the city is looking to replace. The others include replacing the Kirschenbrücke (Cherry Bridge) at Augustusstrasse, which spans the same river. The 120-year old two span arch bridge will be replaced with a beam structure with no center pier in the river. Originally, the arch bridge was supposed to be rehabilitated, yet floodwaters in 2013 caused extensive damage that made even rebuilding the bridge to its original form impossible due to costs deemed exorbitant. The 2.3 million Euro project includes rebuilding the street approaching the bridge. The third bridge to be replaced is a wooden through arch bridge located near Niederwiesa. Built in 2006, the bridge is deemed unsafe due to deterioration in the wood. Its replacement structure will be a steel through arch bridge with truss features. It will still carry the Zschopau Bike trail connecting Flöha and Frankenberg. All three projects are scheduled to start this fall and is expected to last a year.
Man Pees off Historic Bridge onto Tour Ship in Berlin- 4 injured
And lastly, some changes are coming to the Chronicles. After two years in Schneeberg, its main office is being moved to Glauchau, located 10 kilometers north of Zwickau in western Saxony. The city of 24,000 is the center point between the cities of Jena and Erfurt to the west and Chemnitz and Dresden to the east. The move is ongoing and is expected to last through August. The Chronicles will have some pauses in between due to the move. Furthermore, the Chronicles no longer is available on Skrive, for the platform was shut down on June 15th. However, it is pursuing other social media platforms to provide coverage, which will include the use of Spotify and other podcast apps, as well as some local platforms for better coverage in the US and Europe. The project is expected to last until the end of August. To give you an idea of the move, check out the Chronicles’ on Instagram, which has a series on Moving Art.
HAZELGREEN, MISSOURI- The days of the Gasconade River Bridge, which used to carry US Hwy. 66 near Hezelgreen may be numbered as it faces demolition scheduled for Spring of 2020 unless a new owner can be found.
The Missouri Department of Transportation (MODOT) has placed the 95-year old bridge under a 30-day public review and comment period which is halfway through its time and is scheduled to be completed by July 5th. The historic bridge was built in 1924 by MODOT and consists of (from west to east) one 8-panel Warren pony truss with alternating verticals, two 8-panel Parker through trusses and one 6-panel Pratt through truss, all totaling a length of 526 feet. The structure is elgible for the National Register of Historic Places because of its design that was in connection with the standardized bridge movement that started in 1910. It is also in connection with Route 66 and its history, as the Highway, connecting Chicago with Los Angeles via Tulsa and Santa Fe was in operation from 1926 until the last segment of the highway was decommissioned in 1979. Interstate 40 had suplanted the stretch of highway where the bridge is located a years earlier.
Currently, the bridge is closed to traffic and a replacement bridge is being built alongside the historic structure, which will carry a frontage road running alongside the interstate once it’s completed next year. The Gasconade Bridge used to carry that road before its closure in 2015.
Attempts to find an owner for the new bridge and restore the structure to its original glory have not been successful due to differences in planning and realization combined with lack of funding for purchase and restoration. Yet the Gasconade Bridge Facebook (click here) has garnered support from over 1200 Followers and many more who are not on the social media scene. There have been rallies and fundraisers lately and a page where you can donate to save the bridge (click here).
Still the clock is ticking and with the resources and options running out, “only a public outcry expressing significant concern and a desire to save the bridge from demolition might help,” according to a statement on the Gasconade Facebook Page. If you would like to help in convincing government officials to save the bridge, here are the contact details you Need to know before you address your support for the bridge:
Mail:Transportation Planning, Program Comments, P.O. Box 270, Jefferson City, MO. 65102.
Identify the Gasconade River Bridge in Laclede County, MO. Give them your name and where you live and most importantly, why this bridge is important and is worth saving. It must be personal; all letters copied and pasted will not be acceptable.
To provide you with an incentive to convince MODOT, here’s an interview I did with Rich Dinkela about the bridge a few years ago. Click here to view. A pair of YouTube videos of the bridge can be found below:
If you have any suggestions to help save the bridge or are interested in buying it, please contact the Group on their Facebook page. A link to their website you will find here.
GLAUCHAU (SAXONY), GERMANY- In a follow-up to the last article on the reconstruction of the Hirschgrund Bridge at the Castle Complex in Glauchau, I decided to attend the informational meeting and tour of the bridge, which took place on May 11th at the front court of the castle. This meeting and tour, which was divided up into three different time slots, was part of the Day of Funding and Support sponsored by the State of Saxony, and its main focus is the work that is being done to the castle itself, which started in 2017 and is scheduled to be finished by 2025. Already finished is the construction of the front court of the castle, which features a series of flower gardens, bike racks, picnic areas and a multifunctional facility that can be used year round, including for ice skating, which is Glauchau’s past time together with its Christmas Market.
This event was also tied in with the city’s first ever arts and crafts fair, which took place inside the castle and included exhibits, workshops and an auction. Due to inclimate weather, comprising of heavy rain and cold weather, the attendance was down across the board. However, we did come away with something for our own best interests- me with bridges, my daughter with arts and my wife with some ideas on how to better the arts and crafts fair. 🙂 Inspite of this, this article is on the bridge itself for based on my meeting with a representative from a construction firm working on the bridge, here are some facts that will need to be taken into account.
For instance, while newspapers and even my own previous reports had mentioned about the bridge being reopened by July, that assumption was proven false, both verbally and on the posters. Right now, if all goes well, the project should be finished and the bridge reopened by the end of November 2019 (this year). There are several factors that contributed to this delay.
The first one has to do with the demolition of the bridge. According to the spokesperson at the meeting, while attempts were made to keep only the foundations and piers of the 1700s- built arch bridge, combined with the two outer arches as part of an agreement with the State Ministry of Culture and Heritage to save them, demolition of the bridge took a little more out than expected as many elements from the original bridge had to be removed because they could no longer be used for the load bearings. That means they were worn out and would not be useful for the reconstruction. A good example of the extensive work on the bridge regarding that aspect can be seen in the picture above. If this was in American standards, this entire arch bridge would have been completely removed, going against the Historic Preservation Laws that were designed to protect historic structures like this from being destroyed. While the preservation of the outer arches and the piers were a compromise, it should be considered a stroke of luck in the face of modernization, which is becoming the norm in our society, even at our expense.
With the removal of most of the bridge comes the preservation of more than 12,000 different grey-colored granite stones from the original structure. According to the representative from the construction firm, they will be incorporated, like I mentioned. The question is: how?
As a facade! 🙂
This would make the best sense especially after my inquiry with the city’s civil engineer who also has been watching this project very closely. As mentioned in the previous article, the bridge is being rebuilt, first starting with the arches, then following with layers of concrete slabs supported by a skeletal system of vertical and horizontal support beams that would hold the bridge in place. The stones from the previous structure would be used as both decking as well as for the facade. While the reconstruction of the arch bridges will not be in-kind, meaning rebuilding it just like building the arch bridge from scratch beginning with the arches and then filling them in, layer by layer, the use of the skeletal system with concrete support beams as a skeleton will ensure that the new bridge will be sturdier than its original predecessor. I learned that in 2004, wooden support beams were put into place underneath the arches to keep them from collapsing. While this would have been considered useless if the bridge was coming down anyway, it did keep the bridge intact, thus helping the construction workers save as much of the materials for the rebuild as possible. Otherwise, allowing the bridge to sit derelict and let it collapse would not only eliminate that possibility, it would have been dangerous to even approach it.
Granted that there is wooden support for all four of the bridge’s arches for the new structure, yet they were meant for building the two inner arches from the ground up and reinforcing the outer arches- for the former, they were following the recipe Romans used when building their arch bridges during their peak in power.
With that comes the skeletal system and the layered concrete, which brings up another interesting fact I learned at the meeting. The vertical beams mentioned in the previous article feature a combination of concrete with steel wiring. This concept is often used for American bridges, in particular, with beam bridges. In Germany, it is hardly spoken of for the majority of modern bridges built after 1945 have focused solely on steel, fabricated from the mills in western Germany as well as parts of Saxony, Saxony-Anhalt and Brandenburg in the east. With very few quarries, concrete is used rationally- mainly for abutments, piers and decking- much of it with other materials. In this case, the vertical beams have the American style of steel wiring drowned with concrete with the wiring sticking out. The main purpose here is as the concrete layers are built up, the top layer will be covered with a decking made of stone and concrete, providing a sturdy crossing for years to come.
Add railings of up to 1.7 meters high to ensure the safety of those crossing it, the bridge will have a width of 3.7 meters and a total length of 55.3 meters from the castle to the park, with LED lighting, making the new crossing an attractive site in addition to the castle itself. The bridge will be 9 meters tall, a few centimeters taller than its was before the complete makeover started last year.
While there were only a few people at each of the three tours in the morning due to the weather, most were eager to know more about the project and even some of them shared some memories of crossing the bridge before it was closed off due for safety reasons many years ago. Many had a chance to ask the representative more in details about what was being done with the bridge with a lot of curiosity. The atmosphere was mostly positive when I was there. But all had one thing in common- they would love to see their bridge back as it is part of the Castle Complex, connects with the park and is part of Glauchau’s history in general. In November of this year, this will come true.
There are three projects that are going on around Glauchau’s Castle Complex- all of them being funded by the state. The front courtyard at the castle’s entrance was finished in December, right in time for the Christmas market. The bridge will be finished by the end of November. The third project scheduled to begin in 2020 will be redeveloping the grounds inside the castle as much of the markets and festivals take place there. That project is expected to last 2-3 years.
T-shirts and apparel with the theme of the bridges along the Zwickau Mulde, with exemplaries of the ones in Glauchau, Zwickau and Rochlitz can be found in the online shop via word press. Click here and order one today. 🙂
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.