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 Location of the A3 within Switzerland | |
| Route information | |
| Length | 180 km (110 mi) |
| Major junctions | |
| From | A35 at French border |
| To |  A13 |
| Location | |
| Country | Switzerland |
| Highway system | |
TheA3 is amotorway in northeastSwitzerland, running diagonally from France toward the southeast border, and passing byZürich on the way. The total length of the A3 motorway spans roughly 180 kilometres (110 mi), but parts of the road share sections of theA1 andA2 motorways.
The A3 belongs to the Swiss motorway network. It starts at the border inBasel, where it connects toFrench motorway A35. From the Wiese Motorway Fork, the route is shared with the A2.
AtAugst, the motorway splits, with the A2 branching off and the A3 continuing pastRheinfelden andFrick. After theBözberg tunnel is the Birrfeld Motorway Fork, near Birmenstorf. Here, the A1 and A3 share the same route as far as Motorway Interchange Limmattal, where the A3 goes towardsUrdorf and theUetliberg Tunnel which was opened on May 4, 2009. AfterZürich the motorway weaves through the hills of the south-east bank ofLake Zürich. It continues along theWalensee (Walen Lake), and on toMels where it ends at a junction with the A13.
The A3 represents (together with a section of the A1) the most important connection between Basel and Zürich, and (together with a section of the A13) the most important connection Zürich–Chur.
A special feature is the highway section at Lake Walen. Between Weesen and Murg in 1964, the N3 center was opened as a main road and led by the six tunnels:Ofenegg (370 metres or 1,210 feet),Weisswand (1,100 metres or 3,600 feet),Standenhorn (460 metres or 1,510 feet),Glattwand (160 metres or 520 feet),Mühlehorn (300 metres or 980 feet), andStutz (180 metres or 590 feet).
The highway section has been extended since 1986 with the opening of the Kerenzerberg Tunnel (5.76 kilometres or 3.58 miles), which handles the road to Murg / Sargans. The old six tunnels and the road on the shores of Lake Walen were converted to unidirectional operation and now form the carriageway to Weesen / Zürich.
Since May 4, 2009, with the opening of the highway section between the portBirmensdorf and Zürich, the branchSouth- the last section of the so-called "Western Bypass" - the A3 motorway is continuous betweenBasel andSargans.
With the opening to traffic of the new section on May 4, two existing sections of highway have been renumbered. The leader in the city of ZürichAutobahnast Limmattal - Hardturm (always officially recorded as N1) is now known as A1 (Switzerland) or A1H (Shuttle Hardturm) rather than A3. The leading out of town Autobahnast Wiedikon - Zürich south, the so-called Sihlhochstrasse is referred to as the new A3W (feeder Wiedikon).
Also initiated, with the opening of the Western Bypass, the first stage of the flanking measures pass the residential areas along the former "West tangent" in the city of Zürich. The existing road trains, which were used for urban transit highway connection endpoints and Wiedikon Hardturm, were temporarily contracted on May 2, each for one traffic lane in each direction. In the following months until the summer of 2010,[1] dismantling will continue of the "temporary" transit routes to district roads (West Street and Sihlfeldstrasse) and urban main roads (Seebahnstrasse und Schimmelstrasse)). In addition to various structural measures that are placed on the axis of incidence via Wollishofen and Albisrieden, additional traffic lights are used to regulate traffic flow in the metering equipment and make the side-traffic into the residential neighborhoods unattractive.
 | This article contains a bulleted list or table of intersections whichshould be presented in a properly formatted junction table. Please consultthis guideline for information on how to create one. Pleaseimprove this article if you can.(December 2021) |
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