Polygon Bridge fits a supported transfer between Ethereum and Polygon PoS when its mapped token is what you need at the destination; check where a stalled attempt stopped first. If the source transaction failed and you need to retry, use the Polygon Bridge to move the token between those networks.
When does Polygon Bridge fit your transfer?
It fits when you need a supported token on the other network and can wait for the bridge to settle. Before starting or retrying, check these four details:
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Networks: Confirm that the source and destination are Ethereum mainnet and Polygon PoS, with chain IDs 1 and 137. A normal wallet send does not move a token between chains.
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Token received: Compare contract addresses, not symbols. For example, Ethereum USDC sent through the PoS bridge becomes bridged USDC.e on Polygon, which differs from native Polygon USDC; a destination that requires native USDC may call for a CCTP route.
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Time: The PoS route waits for on-chain processing. A liquidity bridge may quote a faster arrival, but its available liquidity and the token it delivers also matter.
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Total cost: Compare the amount expected at the destination after gas, any route fee and any conversion. Check that the receiving wallet or exchange accepts that exact network and token.
What happens to the tokens, and what does it cost?
On a deposit, the PoS bridge locks the token on Ethereum and credits its mapped counterpart on Polygon. Think of a coat check: the claim ticket can move around, while the coat stays put until the ticket is returned. On a withdrawal, the Polygon token is burned, a checkpoint records that event on Ethereum, and an exit releases the locked token.
This explains why a confirmed Polygon burn can leave a withdrawal looking unfinished: the Ethereum exit is still due. Deposits commonly take minutes after Ethereum confirmation; withdrawals can take tens of minutes to hours as they wait for a checkpoint and the exit transaction. Those are planning ranges, not deadlines.
Polygon bridge fees depend mainly on network gas. An ERC-20 deposit may need a separate Ethereum approval before the deposit, while a withdrawal needs POL for the Polygon transaction and ETH for the Ethereum exit. As an illustration, a transaction using 150,000 gas costs 0.00075 ETH at 5 gwei, or 0.0075 ETH at 50 gwei; check the wallet’s live estimate before signing.
What should you do if the transfer is pending or failed?
Start with the transaction hash in Etherscan or Polygonscan and identify the last confirmed on-chain action. A wallet or bridge display can lag behind the chain, so “pending” in an interface does not by itself mean the funds have disappeared.
If the source transaction failed, the bridge transfer did not start; resolve the gas or wallet issue before retrying. If only an ERC-20 approval succeeded, the token was approved for use but no deposit was made. If the deposit succeeded, check the mapped token’s Polygon contract in your wallet before sending the amount again.
For a withdrawal, a confirmed burn means you should wait for its checkpoint and then complete the Ethereum exit, with ETH available for gas. If an exit transaction fails, retry that exit after checking the gas estimate; do not burn the tokens again. Keep the original transaction hash and use the same wallet to trace each stage.
Check contract addresses and the destination’s accepted token before signing another transaction, particularly for USDC and USDC.e.
Choose the route whose delivered token, settlement time and full cost meet your destination’s requirements, and retry only after the source-chain record shows which step failed.