Emergency services were called and there were major traffic tailbacks after a vehicle fire on the M6 near Lancaster.
Police were called to the incident between Junction 34 (Lancaster) and Junction 35 (Carnforth) just after 1pm on Friday.
A man was receiving medical treatment, said a Lancashire Police spokesperson.
The M6 was closed in both directions between Junctions 34 and 36 for a time before reopening northbound, and then fully reopening by 5pm.
There were severe traffic delays in the area on Friday afternoon.
"We anticipate that the motorway will be closed for some time whilst we assess the situation," said a spokesperson for Lancashire Police.
"In the meantime, we’d recommend looking for an alternative route, such as the A6."
Anyone with information or footage is asked to call 101 quoting log 0647.
A Lancashire Fire and Rescue spokesperson said on Friday afternoon: "At 13:06 on 28th February 2025, four fire engines from Lancaster, Morecambe, Bolton-le-Sands, and Carnforth attended a vehicle fire on the M6 southbound between junctions 35 and 34.
"One casualty was treated by North West Ambulance Service. The motorway will remain closed into the evening. Emergency services remain in attendance."


Morecambe children's nursery announces plans to close during extreme heat
Lancaster MP responds to Sir Keir Starmer's resignation as Prime Minister
Carnforth High School praised as a "caring community" in Ofsted report
Body of man found in Lancaster park
LISTEN and PHOTOS: Armed Forces weekend will return after massive crowds enjoy biggest ever event
Morecambe MP says Sir Keir Starmer "has made right decision" as Prime Minister resigns
Limited edition artwork will raise vital funds for Lancaster community group
Green Heritage Plaque marks first home of Lancaster University
New home revealed for £20m Morecambe West End regeneration scheme
Wooden nests take flight in Lancaster and Morecambe to stop decline of endangered birds
Veterans salute as Armed Forces Day flag raised at start of celebration weekend in Morecambe
Vandals cause delays to aqueduct sinkhole repairs in Lancaster
Extra Care scheme to open in Lancaster
Three people taken to hospital after road traffic collision in Morecambe
Injured police officer speaks of anger after jailed man freed 16 days after sentence
Morecambe woman to brave the shave to help dogs stay with their families
M6 near Lancaster to close for resurfacing
Full line-up for biggest ever Armed Forces weekend in Morecambe
Lancaster District residents thanked for embracing food waste recycling
More gridlocks in Heysham as roundabout resurfacing works 'over-run'

