Space Bridge

Space Bridges are  a type of Cybertronian interplanetary transport. This technology alows cybertronians to travel across space almost instintaniously through trans-warp space. This nature allows space bridges to also allow transport to other dimensions, something they were commonly used for by Cybertronians in their first golden age.

Models
A second version of the space bridge consists of a generator "gate" that opens bridges to the destination without a receving gate.

A third

Space Bridge vs. Stargate
With a Stargate, matter is broken down by the dialing gate and reconstructed by the recieving gate, and it is strictly one way travel. Space Bridges, on the other hand, do not break down matter and, at least for two of the models, allow two-way travel.