A driver crossing the Lagoon Pond Bridge lost control and crashed into the bridge’s guardrail just after 2 p.m. on Monday, stopping traffic on the bridge for an hour and a half, police said.

No injuries were reported to the driver, who was not named, or the dog in her car, and damage was limited to the one vehicle. Citations for driving to endanger and marked lane violation are pending, according to state police, who responded to the incident.

The cause of the accident is unknown, said Sgt. James Cruz of the Massachusetts state police barracks in Oak Bluffs. The car, a Toyota Highlander, was traveling at normal speed on the bridge until losing control and swerving off the road, the log entry said. After crashing, the Toyota become stuck on the guardrail, leaking fluids onto the bridge, and remained suspended until it was towed.

No damage to the bridge was reported and the causeway was not closed at any point, though traffic was redirected for a time until the car was removed, Sergeant Cruz said.

Oak Bluffs police and fire also responded as well as Island EMS. The driver signed a waiver declining treatment at the scene, police said.

State troopers Dustin Shaw and David Parent also responded; Trooper Parent conducted the investigation.

— Maia Coleman