The short answer
A crypto bridge connects assets and blockchain networks that do not natively share the same state. In practice, a bridge route coordinates a source transaction with delivery or representation of an asset on another network. The exact mechanism varies by bridge and route.
How it works
Start by identifying the source chain, destination chain, token and wallet. A token with the same symbol can exist as different contracts on different networks, so the destination network and asset shown by the route matter as much as the symbol.
Why it matters
Bridge quotes can change with liquidity, gas prices, provider availability and network conditions. Compare the amount received, estimated fees and transaction steps immediately before signing rather than relying on an earlier quote.
Practical takeaway
Use a wallet you control, verify the destination network and token, and review every transaction approval. OneSwap provides a non-custodial interface for reviewing supported routes; the underlying bridge and networks determine execution and availability.