The flooding that shut down an important highway tunnel in Boston Wednesday night was a dramatic but rare occurrence, Massachusetts’ top highway official said in an update on what happened.
About 130,000 gallons of water filled three feet of the tunnel, the connector between interstates 90 and 93, starting about 7 p.m. Wednesday, Massachusetts Highway Administrator Jonathan Gulliver said Thursday. The water came from storm runoff as the area received about four inches of rain, much of it falling just at the start of rush hour.
“This was a huge storm that hit us very intense,” Gulliver said…