The map of the SWRO shows the active construction sites of the city of Rosenheim described here.
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General description of the measure The Mangfall Canal Bridge represents the only bottleneck in the otherwise 4-lane course of Äußere Münchener Straße from Brückenberg to the Schwaig traffic circle.
The results of the preliminary planning were approved with a project resolution on July 22, 2015. Variant 1a - single-span girder articulated with precast prestressed concrete elements and in-situ concrete slab on reinforced concrete abutments with bored pile foundation - was continued in the further design planning and submitted to the administration by the commissioned planning office in 2016. In the further course, the results of the pile test loadings at the Georg Aicher Park Bridge were awaited in 2016 in order to verify the pile foundation also specified for the Mangfall Canal Bridge. The project was then initially halted.
With the resolution on the bicycle decision of 29.10.2020 in the committee for traffic issues and public transport, a separate walking and cycling route on the bridge, as well as the widening of the northern underpass for an optional bicycle expressway was determined. This is to be taken into account in further planning. Currently, replanning is underway to meet the new bike conditions from the results of the pile loading, as well as the bike decision.
Sidewalk and bike ramps Currently, there is no way for pedestrians and bicyclists to cross Äußere Münchener Straße without height restrictions. On the north side, there is a crossing option with a push-button traffic light. When activated, motor vehicle traffic on Äußere Münchener Straße is interrupted. To enable a height-free crossing in the future, an underpass with a clear width of 6.00 m and a clear height of 2.50 m will be built at the northern abutment. In conjunction with ramps on both sides with maximum longitudinal gradients of 6%, slopes of less than 6.00 m in length and intermediate landings of 1.50 m in length, the barrier-free crossing of Äußere Münchener Straße is possible in the course of the pedestrian and bicycle path running north of the canal. The ramps are planned as in-situ concrete trough structures. The construction of the abutments and the ramps requires the securing of the excavation pits with sheet pile boxes. The Mangfall Valley Bike Path runs on the northern embankment of the Mangfall Canal.
Temporary bridges and temporary bypass To be able to maintain traffic during the construction period, a temporary bypass must be built. This can only be arranged to the west of the bridge because the necessary ground is not available to the east. The construction of 2 temporary bridges for motorized traffic and for pedestrian and bicycle traffic is planned. The superstructures are planned as system bridges. The abutments are to be constructed with sheet piles as foundation elements. Since the required ramps cannot be freely embanked, especially in the area of the car wash on the Kaufland site, a tied-back sheet pile wall is required in this area.
Clearing and compensatory measures The embankments west of the road and southeast of the bridge are covered with trees and bushes. Approximately 50 trees will need to be cut down as part of the construction project. In the course of further planning, a landscape conservation plan will be drawn up. This will result in compensatory measures that will have to be implemented.
The existing bridgecontains public utility lines as well as telecommunication lines of Telekom and Kabel Deutschland. These must be relocated out of the bridge area because lines that would be attached to the superstructure would restrict the clearance of the sidewalk and bike path running parallel to the channel and would thus result in lowering these sidewalks and bike paths and significantly lengthening the ramps. On the part of the public utility company, the construction of a culvert by means of a flush bore is planned.