A large plenum box that fell from a passing truck slowed southbound traffic along Interstate 35E near Commonwealth Drive Wednesday afternoon.
The box apparently fell off a truck after it passed underneath a railroad crossing. The plenum appears to have damaged the pavement and crews were inspecting the bridge to see if it was also damaged.
A plenum box is an important part of an HVAC system's ductwork.
Traffic weaved around the box until crews arrived and dragged it out of the main lanes of traffic.
Get DFW local news, weather forecasts and entertainment stories to your inbox. Sign up for NBC DFW newsletters.
No injuries were reported in connection with the incident.
Check back and refresh this page for the latest on this story.
