At least some work must have started and project must be funded and on track
Connecting each sides mainland, not islands
(Although stopovers or steps at islands are fine)
You'll be able to travel above water not flying between the countries
Update 2025-03-23 (PST) (AI summary of creator comment): Bridge Structure Clarification:
The bridge must be built completely above water
Partial or submerged sections will not meet the criteria
Is a partially submerged bridge ok ?
The Oresund bridge has some tunnel portions to allow shipping through, but people mostly call it a bridge.
(same question applies to all of these bridge markets)
@Odoacre https://manifold.markets/Ernie/bridge-built-connecting-mainland-it there is some discussion of this question here.
For simplicity I've gone with requiring it be above water