I found it distressing to read of the plight of Dorothy Williams and her neighbors in North Charleston’s Highland Terrace neighborhood. Their homes are threatened by the S.C. Department of Transportation’s $1.1 billion plan to widen Interstate 526 and reconfigure its intersection with I-26. As the Post Courier reports:

In Highland Terrace, some residents are old enough to remember when I-26 was built, right through their lower-income and predominantly black community. “I do know that we need wider roads, but give us a break,” said Williams, who was a high school student when I-26 was built through her neighborhood. Later, I-526 was built along the south end of the community, and Charleston International Airport grew along the western side. “Every time they want to make any improvement, they move the black people out,” Williams said. “It’s always been us, not just in Charleston and North Charleston. My sister lives in Atlanta, and she had to move so they could build a stadium.”

But why, having borne witness to a half-century of such destructive plans, does Williams still accept the notion that we need wider roads? Especially when such policy tends to worsen congestion.

Roads are widened at tremendous cost to the many for the enrichment of a privileged few: engineers, road contractors, concrete and asphalt merchants, and associated lawyers and money peddlers. Second-order beneficiaries include those positioned to exploit this traffic-concentrating strategy: land speculators, strip mall developers, auto dealers, fast food franchises, national production home builders, etc.

And, lest we forget, the politicians who collect contributions from these special interests during election campaigns.

Collectively, this group constitutes a sprawl-building industrial complex of massive proportions. Their program does not solve the congestion problem, it perpetuates it.

Here’s the formula:

Lobby for wider roads under the pretense they will ease congestion. Wider roads stimulate travel, which boosts fuel use, increasing gas tax revenue. Congestion, temporarily relieved, gradually builds as does political pressure to widen roads again. Increased gas tax revenue (now supplemented with sales tax revenue) combined with debt issuances is used to fund more road widening, which temporarily eases congestion, while stimulating travel, boosting fuel use and gas tax revenue. Wash, rinse, repeat.

It’s a case study for how misaligned incentives foster perverse outcomes.