The M6 near Leyland was closed after fears a man was threatening to jump from a bridge.
A Lancashire motorway was closed for around 45 minutes after fears a man was threatening to jump from a bridge.
Police were called at around 7.45am on Monday after a man was spotted on the wrong side of the barriers on a bridge around half a mile north of junction 28 of the M6 at Leyland.
The northbound side of the motorway has now been reopened.
Officers managed to detain the man at around 8.30am and he is now being questioned.
The motorway has been reopened but long tailbacks are on the southbound carriageway.
The Highways Agency is currently estimating drivers will be delayed by around 40 minutes, with normal traffic conditions only expected at 10am.