The renewal of the Haubenkanalstrecke is being tackled – a section of the oldest transmission network in Schongau. The measure is more expensive than expected.
Schongau – The condition of the hood sewer in the district heating pipeline network of the city of Schongau is poor. 13 leaks have been counted recently, Florian Hiemer recently informed the city council. "The inspection and the expert opinion in 2021 demonstrated the need for action," recalled the technical manager of Stadtwerke Schongau. Major damage had just been repaired at the Fauler Graben, which had led to a longer construction site in Haldenbergerstraße in the direction of Altenstädter Straße. The problem is that the pipes have a special dimension that was not in stock.
Now the Haubenkanalstrecke is gradually being renewed – starting with the section Wilhelm-Köhler-Straße to Altenstädter Straße. Over a length of 530 meters, the main line will be replaced, as well as 15 house connections. At the same time, the road, which is also in a pitiful condition, is also being taken part. The project had already been presented to the building committee – now it went into detail in the city council. "We should approach this with a certain degree of care, also in order to reduce pipe network losses overall," says Hiemer. They also want to be well positioned for the future – for a possible connection of Schongau-West (we reported).
Heat supply during construction work is ensured
Work is carried out in the existing building. The intermediate supply of the residents is planned via mobile heating systems, the heat supply during the construction project is ensured. If, however, it were to be shut down at short notice, those affected would be informed with sufficient lead time. Construction is scheduled to begin at the end of July/beginning of August, and the aim was to take into account the holiday periods of the vocational school, Hiemer said. From 7 August, the kindergarten will also be closed – "we want to make sure that we complete it there quickly".
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Martin Blockhaus from the Municipal Building Authority informed about what is left of the suggestions from the building committee for the road expansion. There is no room for the desired tree islands for traffic calming, but enough alternative places are to be created so that vehicles no longer drive over private areas. The crossing aid on Altenstadter Straße in the extension of the Fauler Graben is also to be built, "funding is in prospect," says Blockhaus.
Cost estimation for work
He already had a few figures ready: The cost calculation for this year amounts to around 360,000 euros, and in 2024 it will be another 236,000. In addition to these 600,000 euros, there are about 50,000 euros for street lighting and 26,000 euros for bus stops and crossing aids.
The renewal of the district heating duct will be much more expensive: According to Hiemer, the current cost estimate is 2 million euros, compared to 1.6 million euros. Overall, the municipal utilities even assume more, the price could fluctuate by 20 to 30 percent. "The length of the route has changed and material prices have risen massively," Hiemer explained. He proposed an adjustment of the business plan, but only once the results of the tender are available.
By winter, the aim is to be completed to such an extent that the road can be closed again for winter service so that there are no restrictions. The work on Wilhelm-Köhler-Straße is to be completed by the European roundabout in spring 2024.
This is what the city councillors say about the project
Stephan Konrad (SPD) questioned the execution of Blockhaus, who had spoken of the fact that the road surface would be restored quite inexpensively. "This is a mogul slope with the ambulance and will be again soon," he feared. Blockhaus explained that although a new road substructure would be dispensed with, the road would have a "homogeneous modern surface". Gregor Schuppe (ALS) said that the road doesn't necessarily need tree islands, there is already enough metal (in the form of cars, editor's note) standing around there, which makes driving through it incredibly annoying. He assured himself that the measure had been coordinated with all divisional owners, from LEW to Telekom, which Hiemer confirmed.
"Anyone who has looked into the excavation pit at the Fauler Graben has seen that it is not a luxury if we replace the pipes," said Ilona Böse (SPD). She wanted to know whether delays should also be expected with this measure. There is only one transition to an old pipe system, otherwise they are standard pipes. "We have anticipated and do not expect delays."
The city council unanimously approved the project as presented.
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