THE BEAUTIFUL thing about concrete is that it eventually crumbles. Pound it with ice, salt, and relentless traffic for a few decades, and it falls to pieces. This is a tremendous hassle for the engineers whose job it is to keep roadways and bridges in single pieces. But for those whose lives are shaped by concrete infrastructure, the material’s finite lifespan is its greatest quality.
Hulking roadways are decaying across the Boston area. The Longfellow Bridge, Storrow Drive, and Somerville’s McGrath-O’Brien Highway will all require major reconstruction efforts within the next several years. The end of these structures’ usable lives presents an opportunity - to correct past mistakes, reduce our overreliance on automobiles, and make our cities more lively places. It’s the opportunity to swap engineering from the 1950s with modern, human-scale design.