SABULA, Iowa – Illinois transportation officials are planning to give away – for free – a half-mile-long steel truss bridge built in 1932 that spans the Mississippi River between Sabula, Iowa, and Savanna. But there are conditions for those who want to take on a slice of history.

Before the Illinois Department of Transportation can demolish the bridge and build a replacement, it is required to offer the structure to anyone who promises to maintain it forever at its new location.

The bridge must be kept “in its historical significance in perpetuity” at a location approved by the Illinois DOT, said Mark Nardini, an acting environmental studies manager with the agency, according to report Friday in The Dubuque Telegraph Herald.