Auberg tunnel

Auberg tunnel
use	Road tunnel
traffic connection	B304 , B299
place	Altenmarkt an der Alz
length	440 m
Number of tubes	1
cross-section	95-108
Largest coverage	40 m
construction
Client	Federal Republic of Germany
building-costs	€ 30 million for the entire bypass
start of building	2017
completion	2021
planner	Motorway Directorate South Bavaria
location
Coordinates
North portal	48 ° 0 ′ 23 "  N , 12 ° 31 ′ 53"  E
West portal	48 ° 0 ′ 13 ″  N , 12 ° 31 ′ 41 ″  E

 Map with all coordinates: OSM | WikiMap

The Aubergtunnel is under construction (as of 2019) tunnel of the B304 for local bypass of Old Market of the Alz . In particular, it should relieve the often congested "Schneeweißeck" traffic junction with the B299 .

Problem situation

The confluence of the B304 with the B299 lies in the middle of the densely built-up center of Altenmarkt. It is angled and difficult to see and is a hotspot for accidents. With over 15,000 vehicles a day, the traffic load in the Altenmarkt thoroughfare is relatively high. A solution to the traffic problem through construction work on the Schneeweißeck is ruled out due to the local conditions. The tunnel solution eliminates the problem and enables a partial bypass of the Altenmarkt community. The complete bypass is planned as a further measure in the requirement plan for the federal highways.

history

The B299 federal road is an important north-south traffic axis; in its southern part it connects the A94 motorway near Altötting with Altenmarkt. Then it goes over to the south-facing part of the B304, which runs to the A8 near Traunstein . Because of the numerous industrial and commercial operations in the region, it has a high number of trucks. The B299 runs in the Alz valley right through the neighboring town of Trostberg and the north of the Altenmarkt community. About halfway between the two motorway connections, the B304 branches off to the west in Altenmarkt and connects the region with Munich. For a long time there have been considerations about bypassing and relieving the existing road network. With the completion of the Auberg tunnel, a major bottleneck will be eliminated. When connecting to the existing road network, options for future expansion plans are taken into account.

Conception

The total length of the two-lane road construction measure is 1.5 km. In the west of Altenmarkt there is a junction-free junction from today's B304 to the new tunnel. The remaining section of the old federal road will serve as local access for local traffic. In the north of Altenmarkt, the tunnel will be connected to the existing road system via a roundabout. An operations building and parking areas for rescue operations are being built right next to the north portal. The tunnel is designed for a total carriageway width of 7.50 m (2 × 3.25 m) and a height of 4.50 m. There are also two side strips of 0.25 m each, a central strip of 0.5 m and two emergency walkways of 1.0 m each.

Construction phase

The symbolic groundbreaking ceremony took place on April 24, 2017. The tunnel breakthrough was celebrated on October 15, 2018. The tunnel is driven from north to south-west. The construction site equipment is located at the north portal. The mining work is carried out conventionally in partial cross-sections. The excavation is mostly carried out using an excavator, blasting is only partially planned. Immediately after the cavity has broken out, temporary securing is carried out, after which the shell is sealed. Completion is planned for the beginning of 2021.

Individual evidence

1. ↑ ^{a b c d} Auberg tunnel (pdf) . In: Bavarian State Ministry for Housing, Building and Transport . Retrieved January 21, 2019.
2. ↑ The wait is over: groundbreaking at the "eye of the needle"! . In: rosenheim24.de . April 24, 2017. Retrieved January 22, 2019.
3. ↑ Through at Aubergtunnel in Altenmarkt . In: Marti GmbH Germany . October 14, 2018. Retrieved January 22, 2019.
4. ↑ Auberg tunnel in Altenmarkt: breakthrough made + video . In: Passauer Neue Presse . October 18, 2018. Retrieved January 21, 2019.