From The Stargate Omnipedia
Intergalactic gate bridge
Chain of Stargates
spanning the 3-million-light-year void between the Milky Way Galaxy
and Pegasus Galaxy
, allowing time and power-efficient transport between Stargate Command
. Seventy Stargates encompass the entire chain.
Developed by Dr. Rodney McKay and Colonel Samantha Carter, the bridge saves three weeks of hyperspace travel time. 34 Stargates, each from the Pegasus and Milky Way gate systems are strategically placed in the void between the galaxies.
A traveler may enter via Stargate Command or Atlantis and a macro written by Dr. McKay commands each individual gate in the chain to forward the energy pattern along the chain until reaching Midway Space Station.
Once at this station, a traveler need only cross the room and enter the opposite Stargate network, where a similar macro process commences, until he or she is deposited at the opposite end of the chain.
Total travel time is estimated at 30 minutes.
The Return, Part 1 - Colonel Sheppard tests the intergalactic gate bridge via a Puddle Jumper, traveling from Atlantis to Stargate Command.
Midway - Ronon and Teal'c work together to repel a Wraith infiltration of the Midway station.