The mistake is usually made before the bridge transaction starts: choosing the destination chain, then discovering that the wallet has no ETH there to pay for the next move. If you have bridged once or twice, that is the part worth fixing. The transfer itself is rarely complicated; the setup around it decides whether the money is useful when it arrives.
Check the destination before sending
First, switch the wallet to Arbitrum and look at what you will need immediately after arrival. ETH is the practical one. A small amount covers swaps, approvals, and transfers, while arriving with zero ETH can leave otherwise accessible tokens stranded. I now treat destination gas as part of the bridge amount, not as an afterthought.
Second, confirm the asset and its network. “USDC” is not enough information if the application you plan to use expects a particular version or token contract. The safest route is to start from the receiving application: check which asset it accepts on Arbitrum, then bridge that exact asset. Avoid solving a token mismatch with a rushed swap after the transfer.
Third, compare the amount you enter with the amount you actually want to use. Fees, price movement, and minimum balances matter more on a small transfer. For a first transaction, send a test amount that would be annoying but not damaging to lose. Once it arrives and appears correctly in the wallet, repeat with the main amount.
The confirmation that saves the most trouble
Before approving anything, read every wallet prompt. A token approval and a bridge deposit are separate actions, and an unlimited approval is not necessary for a one-time transfer. Check the spender, amount, source chain, destination chain, and final recipient. If one of those is not what you intended, reject the transaction and restart from the official interface you already trust.
Then wait for the transfer to finish instead of assuming that a submitted transaction equals delivered funds. Keep the transaction record until the balance is visible on Arbitrum. If the token does not show automatically, the issue may only be that the wallet has not added its contract to the display.
That routine is the useful part of using Arbitrum Bridge: prepare the destination, test the path, and verify the asset after settlement. Once those checks become automatic, bridging stops being a mysterious one-off task and becomes a predictable funding step.