Name of the road that went through Russian occupied Germany to Berlin from West Germany? Was it Weitsendorf?

Sunshine gave you the historical answer. In more recent times, if you're referring to an actual road, it would have been (and still is) either A2 (Autobahn 2, a major highway), or B1 (Bundesstrasse 1, a country road). Both run more or less parallel.

A2 was one of the first highways built in Germany - by the Nazis, mostly for military purposes. B1 was the original road that became sort of obsolete with the highway.

Obviously, there are many ways of getting from the Western part fo Germany to Berlin, depending on where you start, but this would be the most direct route. Another one is a North-South connection that links Munich and Berlin (and obviously also goes through Eastern Germany) via A9.

"Weitsendorf" would be the name of a village (loosely translated as "Wheat Village"), but none that I would be familiar with.

it is called the east west axis and it was originally used by bonaparte to invade russia,and later by the german armies to do the same,,,

There were several roads used for transit traffic from West-Germany to West-Berlin but none of them had a name besides its number. Most important were the Autobahn from Berlin to Lower Saxony (Customs at Marienborn / Helmstedt) and to Bavaria (Customs at Hirschberg / Rudolphstein). Sorry, but the link is only available in german.

The road you want is the A2 (German designation) or E30 (European designation). The road crossed into the former DDR at Helmstedt at Checkpoint Alpha, located to the west of Magdeburg and entered the US sector of Berlin at Dreilinden (Checkpoint Bravo) in the south west of the city. There is a book - you may like to look at www.jbb7994.com as a taster.