Dies ist der Bonus zum AdventureLab "Isarbrücken". Mit den Werten für A-E aus dem AdventureLab könnt ihr die Finalkoordinaten für diesen Bonus ermitteln:
N 48° 07.ABC E 011° 34.DEE
Ein Magnetstab kann unter Umständen hilfreich sein!
Und für Bannerfreunde gibt es hier den passenden Link:
<a href="http://coord.info/GC923RT"> <img src="https://img.geocaching.com:443/8b138800-3db9-4f11-af4e-f6033d1bd8c6.jpg" alt="AdventureLabBonus-Isarbrücken" title="AdventureLabBonus-Isarbrücken" /></a>
English Version of the Lab cache description:
Welcome to an extended walk along the Isar river:
The Isar crosses Munich between the Grosshesseloher Wehr in the south and Oberföhringer Wehr in the north over a length of approx. 14 km. It is crossed by more than 20 bridges and footbridges, which allow traffic to flow between the two halves of the city.
This Adventure Lab will take you to the largest bridges in Munich's city center, some of which are over 100 years old.
The bridges can be visited in any order, but if you also want to visit the bonus cache GC923RT, you should start the tour in the north.
Luitpoldbrücke
The Luitpold Bridge connects Munich's city center (Lehel district) with the districts of Bogenhausen and Haidhausen on the right bank of the Isar. It is part of Prinzregentenstrasse and lies at the foot of the Friedensengel.
The first steel bridge built in 1891 collapsed in 1899 during a flood. In 1901 the stone bridge, which still exists today, was built.
The four large stone sculptures on both sides of the bridge symbolize the four Bavarian tribes or parts of the state.
The bridge spans the Isar River with a single flat three-hinged arch, which has a clear width of 62.4 m and an arrow height of 6.5 m. The length from anchor head to anchor head is 67.15 m. Between the parapets the bridge is 17.20 m wide.
The lower edge of the foundation level is about 6 m below the Isar river bed. The bridge has a load capacity of 60 t.
Maximiliansbrücke
It is located in Munich's Lehel district and continues along Maximilianstraße across the Isar to the Maximilianeum. It is named after Maximiian II.
The western section of the bridge, the Innere Maximiliansbrücke, connects the western bank of the Great Isar with the Praterinsel. The eastern section of the bridge, the Outer Maximilian Bridge, crosses the Small Isar and the Auer Mühlbach from the Praterinsel.
The bridge was built in the years 1857-1863 as an extension of Maximilianstraße to the Maximilianeum, and originally had a width of only 13 m. The widening to 23 m was carried out in the years 1903-05. The bridge, which was renovated in 1989, is under preservation order of historical monuments.
The Inner Maximilian Bridge spans a length of 42 m with its three original brick arches. The arches with clear widths of 7.97 m, 13.88 m and 13.89 m were widened with concrete arches and covered with shell limestone. The Outer Maximilian Bridge has a length of 96 m.
Ludwigsbrücke
The Ludwigsbrücke bridge connects Munich's city center with Haidhausen and the Au. Coming from the Isartor, Zweibrückenstraße leads to the Innere Ludwigsbrücke, which crosses the Great Isar to the Museum Island with the German Museum. The Outer Ludwigsbrücke, from there, crosses the Kleine Isar to Rosenheimer Straße, from which Innere Wiener Straße branches off after a few meters at Gasteig.
The first bridge at this point was already mentioned in writing around 1180. The Innere Isar Bridge, built between 1767 and 1772, had three arches made of Lenggrieser limestone with spans of 13 m each and an arrow height of 3.20 m.
After various new buildings, the current bridge was built between 1934 and 1935.
Inner Ludwigsbrücke:
Segmental arch bridge of reinforced concrete with 43 m span
abutments of 16 m below the surface
Total length of 77 m
Outer Ludwigsbrücke:
two three-hinged arches made of reinforced concrete, each with a span of 32.80 m
Total length 71 m
width of both bridges: 29,20
Reichenbachbrücke
The Reichenbachbrücke is an arched bridge over the Isar and connects the suburb on the left side of the Isar with the Au on the right side of the Isar. The bridge is named after the Bavarian inventor and engineer Georg Friedrich von Reichenbach.
Already in 1832 a wooden bridge with 15 yokes was built on the site of today's Reichenbach Bridge. After the collapse of a yoke, a new building was erected in 1842/43, which survived all subsequent floods, even the flood of the century in September 1899, which destroyed the iron Bogenhausen Bridge and the Luitpold Bridge.
However, at the end of the 19th century the old wooden bridge no longer met the traffic requirements, so that in 1903 the wooden bridge was replaced by a concrete bridge covered with shell limestone with four flat three-hinged arches made of tamped concrete. On the pillars are the coats of arms of the city of Munich and the state of Bavaria.
Spans: 44 m, 28 m, 27 m and 26 m
Length: 135 m
Width 24 m
Load capacity: 60t
Wittelsbacherbrücke
The Wittelsbacherbrücke, named after the Bavarian royal house of the Wittelsbacher, is an arched bridge over the Isar. The Wittelsbacherbrücke connects the Isarvorstadt on the left side of the Isar with the Au and Untergiesing on the right side of the Isar.
From the year 1875, a truss construction between two bridge portals stood here as a bridge. The concrete bridge was built in 1904 as part of the bridge construction program. Technically, the Wittelsbacherbrücke is a copy of the Reichenbachbrücke.
The span width and the shape of the arches were determined by the falsework that was already used for the Reichenbach Bridge (exactly the same span width), only in this way could the massive bridge be built so cheaply. All four arches were also covered with shell limestone.
The pedestal on which the statue stands is part of the bridge pier. A symmetrical staircase leads down to a viewing platform and to a room below the bridge.