GRAY, Maine — Crews will assess damage following a storm that dumped more than 8 inches of rain across parts of Maine, closing some roads and bridges. Scattered showers are expected to fall for a few more days, but the National Weather Service said the worst of the deluge was over Monday. Heavy rains, which began Saturday, resulted in minor flooding when the Presumpscot, Kennebec, and Androscoggin rivers overflowed their banks. The overall damages appear to be relatively minor, given the amount of rain that fell, with some pavement falling apart and minor erosion, transportation officials said. But a full accounting will not be known until waters recede and local and state crews can assess damages in the coming days, said Lynette Miller, Maine Emergency Management Agency spokeswoman. ‘‘It certainly could have been much worse,’’ Miller said. The state Transportation Department closed more than half a dozen low-lying bridges as a precaution, while numerous roads across central and southern Maine were closed or made impassable by high water. More than 8 inches of rain fell in Bridgton, Auburn, and Bath during the storm, and more than 7 inches was recorded in Portland and surrounding communities, Brunswick, and other midcoast towns. Lesser amounts fell elsewhere in the state.