BOURNE — Part of Route 25 is closed because of a fuel spell that started at the Bourne Bridge, according to state police.

At 1:52 p.m. police were notified that a tractor trailer lost a fuel tank, spilling fuel from the bridge headed west until just prior to Exit 3 on Route 25, police said.

The right travel lane from the bridge to Exit 3 is currently closed.

The Bourne Fire Department and the Massachusetts Department of Environmental Protection also responded, police said.