The A82 has been closed in both directions for over five hours due to a serious road traffic collision.
Traffic Scotland first issued an alert to drivers around 9:20am this morning about the crash near Crianlarich.
Traffic information site INRIX report that the crash involved a collision between a car and a motorbike between Glenfalloch Road and the A82 near to the The Drovers Inn.
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Emergency services are still reported to be on site, with traffic coping well.
Forth Valley Police have confirmed that a 50-mile diversion is in place amid the closure. They tweeted: "We were called around 8.30am on Saturday, 25 June, to a report of a two vehicle crash on the A82 just outside Crianlarich.
"Emergency services are in attendance. The road is currently closed and a 50 mile diversion is in place. Road users are advised to avoid the area."
Meanwhile drivers heading to Loch Lomond have been warned to expect disruption to their journeys.
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Loch Lomond & The Trossachs National Park tweeted: The A82 is currently closed in both directions around Crianlarich with a major diversion in place. Please be aware if planning to travel north or south along Loch Lomond today."
UPDATE: The road is now open in both directions at Crianlarich.
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