Main Street

 
Interstate 17, the Black Canyon Freeway, under construction in Phoenix in 1961.

Sixty years ago last month, President Dwight Eisenhower signed the Federal Highway Act of 1956. It marked the beginning of the Interstate Highway System, which now bear's Ike's name. It was completed 35 years later and now totals 47,835 miles. The cost: more than $506 billion in today's dollars.

In this era of austerity and gridlock, the Interstate System is like Project Apollo, the discoveries out of Bell Labs, the infrastructure built by the New Deal, and victory ensured by the Arsenal of Democracy and American armies and fleets triumphing in World War II. It was a model of what we could do together, before we became a venal and wicked people, paralyzed by greed, bigotry, and right-wing extremism.

But the Interstates came with a cost, some of it known at the time by a few forward or skeptical thinkers, more of it obvious today.

Walmart is often cast as the force that destroyed Main Street. But before the Beast of Bentonville were the Interstates. By taking traffic out of small towns, they deprived merchants of much-needed customers. As a result, those towns were dying long before Sam Walton's store became a monopolistic empire. You don't have to look far to see the consequences. Downtown Mesa was thriving before U.S. 60 diverted traffic to the Superstition Freeway. Although not officially part of the Interstate system, this showed the results. Mesa is still trying to recover the dense, authentic downtown that once existed. Downtown Kingman, Williams, and Winslow were all dealt death blows by Interstate 40. Flagstaff was a rare exception. Why did Prescott and Wickenburg keep lively, diverse cores? The lack of Interstates, and for many years even multi-lane highways.

Interstates, and freeways in general, did nothing but destroy big cities. In Seattle, for example, Interstate 5 severed Capitol Hill from downtown, causing hundreds of historic buildings to be demolished. As with cities across the country, it made flight from the city to new suburbs easy. The damage from the unnecessary Papago Freeway Inner Loop, Interstate 10, to central Phoenix has been well-documented in these columns. More often than not, these urban freeways became congestion generators — every widening only made traffic worse.