A wreck involving a semi truck and a dump truck spread debris across the highway on Monday, causing significant traffic disruptions.

It happened on September 25th at approximately 3 p.m. in Littleton, Massachusetts.

According to 7 News Boston, a semi truck and a dump truck were driving across an overpass on Interstate 495, just before exit 2, when the two trucks collided. The force of the crash sent debris and fuel spilling across the roadway.

At least two other vehicles are believed to have been involved in the crash.

Only minor injuries were sustained in the incident, reported Mass Live.

The wreck is blocking I-495 at the Route 2 overpass and has already caused miles of backups. Delay are expected to continue in the area into the evening.

As of 7:47 p.m., MassDOT reported that there was still heavy congestion in the area.

The cause of the crash remains under investigation.