Editor’s note: The article was updated on Friday, Dec. 13, to clarify MassDOT’s position on updating the state’s infrastructure.

After a torrent of floodwaters overwhelmed the Ted Williams Tunnel during heavy rains in Massachusetts on Wednesday, state officials responded the next day to concerns about infrastructure safety.

But the mayor of Boston and the head of Massachusetts highways had differing opinions. opinions on the issue at separate news conferences on Thursday.