Cheapest way to bridge to Arbitrum

Umbria Network
2 min readApr 28, 2022


Umbria’s Narni bridge provides a very cheap and fast way to transfer ETH between Ethereum and the Arbitrum blockchain

The Narni bridge facilitates the extremely cheap and fast movement of $ETH between the Ethereum Mainnnet and Arbitrum One (the chain implementing Arbitrum’s tech).

Visit Narni’s Ethereum to Arbitrum bridge here:

Arbitrum One Bridge V Narni Bridge

Price comparison testing of Narni versus the official Arbitrum bridge provided the following results:

Narni Bridge: Ethereum to Arbitrum One

Cost: $2.61 ($6.52 with gas price normalised to 100 Gwei).

Speed: 4 minutes and 19 seconds.

Arbitrum official bridge: Ethereum to Arbitrum One

Cost: $17.68 ($28.25 with gas price normalised to 100 Gwei).

Speed: 6 minutes and 45 seconds.

View the comparison video demonstration:

Liquidity lending protocol reduces costs and speeds up bridging

Narni uses a novel liquidity lending protocol, which hosts liquidity pools of singular assets on different networks. As well as significantly speeding up and reducing the costs of transactions, it generates fee-based rewards for liquidity providers who add a single asset to the bridge.

Whenever a participant migrates assets between two cryptocurrency networks using Narni, the liquidity providers receive a share of a 0.2% fee in the native crypto/token they supplied. The APYs can be viewed here:

In addition to Arbitrum, Umbria currently provides the fastest and cheapest bridging from the Ethereum network to the Polygon network, Avalanche network, Binance Smart Chain and Fantom (and vice versa).

What is Arbitrum?

Arbitrum is a Layer 2, Optimistic Rollup solution that settles Ethereum transactions off chain. It is becoming increasingly popular with NFT and DeFi projects due to its low transaction costs, rapidity and high security.

According to L2 Beat — the analytics and research website about Ethereum layer two scaling — Arbitrum currently has $7.5 Billion Total Value Locked (TVL)* — updated 13/11/23.

For a step-by-step guide on how to bridge ETH between the Ethereum Mainnet and Arbitrum using Narni go here.



Umbria Network

Umbria’s Narni Bridge is the fastest, cheapest cross-chain liquidity bridge Ethereum ↔️Polygon/AVAX/BSC. Migrate assets almost instantly for the LOWEST fees