Use Code BALT69 for a $69 Ticket to One Day University on July 9

University of Michigan

Researcher says Hogan administration wrongly cites study to suggest highway expansion will cut air pollution

Researcher says Hogan administration wrongly cites study to suggest highway expansion will cut air pollution

Maryland Gov. Larry Hogan’s administration says a project adding toll lanes to Washington-area highways would reduce air pollution, along with congestion. But a researcher whose study was used to support that conclusion said it’s not that simple.

Hogan is pushing an $11 billion expansion of the Capital Beltway and Interstate 270, adding toll lanes that a private company would build and manage for the state. He says it’s needed to reduce “soul-crushing” traffic.

In documents outlining the project and its benefits, state transportation officials suggested it would help Montgomery and Prince George’s counties reduce an excess of ozone pollution and other toxins. They cited a...

79°