![Figure 1: Location of physical conduits for networks considered in the continental United States](https://www.infrastructureusa.org/wp-content/uploads/2015/09/conduits-fig1.jpg)
ASSOCIATION FOR COMPUTING MACHINERY
The complexity and enormous costs of installing new long-haul fiber-optic infrastructure has led to a significant amount of infrastructure sharing in previously installed conduits. In this paper, we study the characteristics and implications of infrastructure sharing by analyzing the long-haul fiber-optic network in the US.