Trumbull’s Highway Department is urging drivers and pedestrians to be cautious and alert, as catch basin grates are being stolen from Trumbull streets.

Thomas Baldwin of the Highway Department said about 19 grates have gone missing in the last week, including four found missing Monday.

“This has been mostly on the east side of the town,” Baldwin said.

The perpetrators could be taking the grates to sell as scrap metal, but Baldwin says most scrap yards don’t take potentially stolen and suspicious items like catch basin tops.

The department has been working to quickly replace missing grates, which costs about $185 a piece.

“This is an extremely dangerous situation for cars, joggers and pedestrians, especially at night when you would not be able to see that they are missing,” Baldwin said.

Police are investigating the missing grates and keeping a watch, according to Baldwin.

One resident reported seeing a suspicious brown or bronze pick-up truck right before a grate went missing in the Pinewood Trail area.

Residents should call police if they see anything suspicious. To report a missing grate during regular weekday hours, call the Highway Garage at 203-452-5070. If it’s after-hours or on the weekend, Baldwin suggests reporting the missing grate to Trumbull Police at 203-261-3665.