Massachusetts Governor Charlie Baker said his administration will review a state study that recommends keeping intact the Interstate 91 viaduct through Springfield.
Nine area mayors had signed on to a plan that would lower the elevated portion of the highway to grade, or ground, level.
Local officials claimed it would increase economic development by reconnecting the city to the riverfront.
But in a visit to Springfield Tuesday, Baker said there's uncertainty as to whether lowering the highway is a viable option.
"I think the way to handle this is to have the facts fit the decision," Baker said. "And in some cases, the facts do support going to grade, and other cases they don't. And that's just not a question of money. In some cases, it's a question of public safety. Sometimes it's a question of capacity."
A two-year-long renovation of the more than four-decade-old viaduct was completed earlier this year.
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