Bifrost
access
adit
air lock
approach
bascule bridge
bateau bridge
bridge
cantilever bridge
catwalk
corridor
drawbridge
entrance
entranceway
entry
entryway
floating bridge
flyover
footbridge
gangboard
gangplank
hall
in
ingress
inlet
intake
lift bridge
means of access
opening
overbridge
overcrossing
overpass
passage
passageway
pontoon bridge
rope bridge
span
stepping-stone
stepstone
suspension bridge
swing bridge
toll bridge
vestibule
viaduct
way
way in
pedestrian bridge
airlock
bulkhead
bulwark
companionway
gunwale
hatch
hatchway
hull
ladder
mast
poop
ramp
stairway
stairwell
turbolift
walkway