As of: February 15, 2024, 9:00 a.m
By: Michael Stürzer
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Five streets meet at Tutzinger-Hof-Platz (on an older drone photo).
Some turning options will be eliminated during the test from the end of March.
© Michael Rudy
A test for the diversion routes during the construction of the B 2 tunnel in Starnberg will bring significant changes for many drivers from March 25th.
Individual turning options are no longer possible, including at Tutzinger-Hof-Platz.
If there are major traffic jams, the test should be stopped.
Starnberg - The Tutzinger-Hof-Platz in Starnberg is already a complicated intersection with its five streets, and now there is a traffic test in advance of the tunnel construction: From March 25th, solutions will be tested for around nine weeks to reduce traffic in Starnberg not to collapse during tunnel construction.
The most important answers to this:
Why is the test necessary?
The tunnel builders at the Weilheim State Building Authority have been preparing the traffic routes and construction site traffic for the actual tunnel construction, the date of which remains open.
Traffic planners came to positive results when examining the construction phases - with one exception, “Tutzinger-Hof-Platz.
“It has long been one of the extremely traffic-congested junctions in Bavaria – even without active construction of the tunnel,” the authority announced on Wednesday.
The tunnel boring machine should bore through under Starnberg from the south and come back to the surface at the intersection of Münchner and Leutstettener Straße.
The north portal is also being built there.
It has been clear for a long time that turning left into the city will be impossible for around 18 months, as will crossing from the outer to the inner Leutstettener Straße - this is exactly where the excavation pit is planned.
The next option for turning from the highway into the city center is Tutzinger-Hof-Platz.
However: “According to forecasts, this will create a significant backlog in the left-turn lane at Tutzinger-Hof-Platz, which will extend towards the motorway onto the B 2, cause backlogs and ultimately lead to a standstill of traffic on the B 2.
In addition, the traffic flowing from the north and east has to be managed.” Consequence: a different solution is needed.
Why is testing already happening this year?
The test phase must be carried out this year so that the knowledge gained can be integrated into the optimization of further planning for the Starnberg tunnel, according to the building authority's justification.
What will be changed during the test?
Two engineering offices worked closely with the city of Starnberg, the district office, public transport, the police and the Weilheim State Building Authority to develop a solution, which will now be tried out from March 25th for nine weeks until probably May 25th.
“The common goal of all those involved is - based on the positive experiences with the traffic effects of last year's B 2 full closure - to prevent a possible failure of the traffic flow during the future tunnel construction phases,” said the building authority.
Pedestrians can look forward to this calmly – nothing will change for them.
Specifically, the test for drivers means:
It is still possible to turn from Hanfelder Straße in all directions, on the B 2 (main street) from the south coming from Weilheim in all directions as before and from Josef-Jägerhuber-Straße in the direction of B 2.
It is no longer possible to turn left from Münchner Straße onto Josef-Jägerhuber-Straße and from Wittelsbacherstraße onto Hanfelder Straße (straight ahead) and onto Hauptstraße (to the sharp left).
The new traffic route for drivers coming from the motorway onto Josef-Jägerhuber-Straße leads via Wittelsbacher-, Ludwig- and Maximilianstraße.
If you want to go from the city center to Hanfelder Straße or to the main street heading south, you have to go via Ludwigstraße to the main street and then continue.
Traffic lights should be installed at this junction.
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Speaking of traffic lights: The entire system at Tutzinger-Hof-Platz will be dismantled for the test and replaced with a temporary system.
According to the building authority, adjustments will gradually be made to the traffic light phases from the end of March in order to optimize the traffic flow.
After the test, the results will be evaluated - and what happens after that is still open.
It may be that the current traffic light phase program is running again, that of the test or a completely different one.
What is changing on Leutstettener Straße?
The test will initially start at Tutzinger-Hof-Platz, and with some delay - the exact dates have not yet been determined - also at the Leutstetten intersection.
This means: The left-turn lane from the direction of the motorway will then be closed and crossing from the inner to the outer Leutstettener Straße and vice versa will be prevented.
Because: Only then can you really know how much traffic flows through Tutzinger-Hof-Platz.
During the test, work on (supply and disposal lines) will be carried out on the inner Leutstettener Strasse (between Münchner and Josef-Jägerhuber-Strasse), as there should be a little less traffic there in the slipstream of the test.
According to the building authority's assessment, the bottom line would be to reduce traffic disruptions.
What does this mean for residents?
According to the announcement, the city of Starnberg will invite affected residents and businesses in the city center to an information evening.
Date: Tuesday, March 5th, from 6:30 p.m. in the Small Hall of the Schlossberghalle.
The city council is also invited.
Representatives of the Weilheim State Building Authority want to present the “Tutzinger-Hof-Platz test phase” measure using a presentation.
What if the traffic jams get bigger?
At first they will, the Weilheim authorities suspect.
The test begins shortly before Easter, i.e. during the holiday and travel season, which is why traffic planners expect around 14 days in which drivers have to adjust to the new situation.
It was the same with other lockdowns.
And then?
“If, contrary to expectations, the test phase reveals unreasonable effects on road users in Starnberg, the test run described will be ended immediately.
“All parties involved agreed on this in advance,” the statement said.
Everyone involved wants to monitor developments closely from day one - i.e. whether traffic is flowing or standing still.
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By the way: Everything from the region is now also available in our regular Starnberg newsletter.
You can find even more current news from the Starnberg district at Merkur.de/Starnberg.