Crossover bridge
Crossover bridges were components of Cardassian space stations such as Deep Space 9. The bridges connected the central core of the station to the habitat ring, and further to the docking ring and its associated pylons. ()

According to the master systems display used by Starfleet, bridges that connected the central core with the docking ring were designated primary crossovers; those that extended to the habitat ring alone were secondary crossovers. () 

In 2369, Lieutenant Jadzia Dax scanned the crossover bridges in order to detect the source of graviton pulses threatening the station. ()

Later that year, Odo instructed Chief Miles O'Brien and Commander Benjamin Sisko to take crossover bridge one to reach the cargo bay which led to docking port four. ()

In 2370, O'Brien was on his way to crossover bridge three when he encountered graffiti in the shape of the symbol of The Circle. ()

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Spacecraft sections