The map of the SWRO shows the active construction sites of the city of Rosenheim described here.
The expansion of Mangfallstraße, from Aisingerstraße in the south to Mangfallbrücke in the north, was started in 2020. The construction measure is a full expansion that takes into account the adaptation of the road surface to the existing traffic load in accordance with current relevant guidelines and regulations. In addition, the situation for pedestrian traffic is to be significantly improved by the gapless addition of a sidewalk to the eastern edge of the roadway and the widening of the existing western sidewalk. The measure is divided into the following three construction phases:
- BA 1 South: Aisingerstrasse to Arnulfstrase incl. new construction of the Kaltenbrücke (realized in 2020).
- BA 2 South: Arnulfstrasse to Miesbacherstrasse (construction 2023)
- BA3 North: Miesbacherstrasse to Mangfallbrücke (construction 2021-mid 2022)
The measure has been coordinated with the section owners and the extensive section relocations will be carried out as an overall measure with the road construction work.
General: As part of the restructuring of the northern railroad area in Rosenheim, the redesign of Südtiroler Platz is planned. The aim of the redesign is the high-quality and barrier-free design of the open spaces and traffic facilities of the entire station forecourt area, whereby the 2nd and 3rd construction phases of Südtiroler Platz are now to be realized.
In the run-up to this construction measure, a first construction phase ("New construction ROB and 1.BA Südtiroler Platz") was already realized directly adjacent. The newly built and operating bicycle parking garage, which is part of the overall design concept, is located in the eastern area of Südtiroler Platz and the parking facility east. The construction area for the redesign project extends from the adjacent Luitpoldstrasse to the north to the train station to the south. The station reception building and the BASA building form the boundary of the construction area. In the east-west direction, the construction area is bounded by the Mühlbach stream to the east and the western traffic facilities of the ROB and 1st BA Südtiroler Platz (parking facility west) as well as the former Oberbahnamt building.
The new construction or reconstruction of Südtiroler Platz (BA 2 and 3) is to be realized in 2 major construction phases:
- 2.BA - Südtiroler Platz, approx. 6,300 m2
- 3.BA - parking facility east, approx. 1.700 m2
Implementation of the construction measure, time schedule: The necessary civil engineering work was already started towards the end of November 2020. First of all, the eastern side of the square (3rd BA - parking facility east) was redesigned. The work covers the area from the Mühlbach stream to about the middle of the station building and includes remodeling work on the eastern side of the stairway and ramp system of the station building.
Currently, the directly adjacent western side of the square (2nd construction phase - Südtiroler Platz) is being redesigned up to the already redesigned areas of the Regional Bus Station. In the course of this construction phase, the entrance area to the station (stairs and ramps) will also be redesigned. The construction time for both construction phases is approximately two years.
Traffic connections are to be maintained as far as possible during the work. In the course of the construction progress, there will be repeated adjustments to the traffic routing. The project is being funded by the Federal Republic of Germany and the Free State of Bavaria under the "Urban Redevelopment" program.
The current measure in the section of Hubertusstrasse between the Brückenberg North junction and the Wittelsbacherstrasse / Pichlmayerstrasse junction is part of an overall plan that includes the expansion of Münchener Strasse with bicycle lanes, green strips and sidewalks between Hubertusstrasse and Luitpoldstrasse. The expansion of Münchener Strasse itself has already been structurally implemented in terms of location from Luitpoldstrasse to the junction with Brückenberg North. The current measure was started in 2021 in temporal connection with the reconstruction of the Brückenberg bridge structure.
Due to the cramped conditions in some areas, the expansion is being carried out in an inventory-oriented manner. A roadway width of 9.50 m (2 x 3.25 m lane, 1 x 3.00 m turning lane or center island) was basically defined as the standard cross-section for Münchener Straße. The cross-section is supplemented by bicycle lanes on both sides with a width of 1.85 m each. On the south side, the planning also includes the creation of a green strip for tree planting with a width of 2.00 m adjacent to the roadway, followed by a 2.50 m wide sidewalk. In Hubertusstrasse, lane widths of 3.00 m (directional lanes and turning lanes) and a bicycle lane with a width of 1.85 m are also planned.
The measure has been coordinated with the divisional authorities. In addition to the relocation of the wastewater sewerage system by Stadtentwässerung Rosenheim, Stadtwerke Rosenheim is planning the relocation or renewal of the district heating, water and power supply systems. The extensive relocations will be carried out as an overall measure together with the road construction work.
In order to maintain traffic in the construction site area during the construction period, extensive traffic phasing plans have been drawn up, which are coordinated with the rehabilitation measures of the bridge structure. During construction, traffic will be guided and controlled at the intersections by temporary traffic signals adapted to the respective construction phases.
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.