The MacArthur Causeway, three and a half miles of road between downtown Miami and South Beach, is flanked by two examples of the region’s struggles to build.

At the western end sits the I-395 Signature Bridge, six concrete arches that were meant to “redefine the Miami skyline.” The state awarded the contract to build in 2017; the project is now expected to be completed sometime in 2029. Over this period, the price has climbed from $802 million to $866 million. The contractor is suing its own designer and insurer for $400 million. A worker died on the job in March, two months after six others were hospitalized. Only four of the six arches are standing.