A truck that was too tall smashed into two signals hanging on the ceiling inside the northbound side of the O’Neill Tunnel in Boston at about 10 a.m. today, state officials said.
The first signal was near the northbound entrance to the tunnel and the second was near Exit 26, the Storrow Drive exit, Department of Transportation spokeswoman Sara Lavoie said in an e-mail.
The Lane Use Signals display green arrows or red X’s to indicate to drivers which lane to use.
Transportation officials and State Police are working to identify the vehicle and plan to review tunnel video as part of their investigaton.
As State Police and transportation department vehicles arrived at the scene, traffic on the busy artery through Boston slowed. But transportation workers removed both signals and all lanes of Interstate 93 were reopened before 11 a.m., Lavoie said.
A Globe reporter saw the object near the tunnel entrance dangling about 10 feet over the roadway shortly before 10 a.m., as traffic rushed beneath it.
Globe correspondent Wesley Lowery contributed to this report.