Duct Bridge

Duct Bridge is an Erekir-exclusive transport block that moves items across terrain or buildings without needing a direct conveyor path. It can bridge gaps of up to 3 tiles and has a small internal capacity of 4 items, making it useful for routing materials over obstacles, through cramped layouts, or across separated production lines.

Unlike ordinary conveyors, Duct Bridge connections are not manually assigned. A bridge automatically links to the nearest compatible Duct Bridge in the direction it is facing, and it accepts items from all sides except the output side. When a Duct Bridge is used as a destination but does not have a destination of its own, it outputs all stored items in the direction it faces and cannot receive inputs from its sides while in that state.

A few placement details matter when building with it:

• Drag-placing Duct Bridges causes the game to try to space them 3 tiles apart, which helps minimize cost.
• If you plan a duct line across a block or terrain feature narrower than 3 tiles, the game automatically inserts Duct Bridges into the plan.
• Links between Duct Bridges can intersect each other as long as the bridge nodes themselves are not crossed perpendicularly.
• Because links cannot pass over other nodes, the common “bridge weaving” setup used with some other bridge types is not possible on Erekir.

In practice, Duct Bridge works best as a compact way to bypass obstacles or separate production chains while keeping item flow direct. Its automatic routing makes it easy to place, but it also means layout direction matters: the facing direction determines both what it can accept and where it sends items.