There are still severe delays on the M6 southbound near Walsall as firefighters tackle a blazing van.
Fire crews were called to the blaze between J10a and J11a at around 11.10am.
Lanes 3 and 4 are now open but 1 and 2 remain closed.
Traffic northbound is still slow due to speed restrictions in place.
The M6 near Coventry has fully reopened after a chemical tanker fire left 10 people, including eight firefighters, needing hospital treatment for the effect of reportedly toxic fumes.
The motorway was closed in both directions around junction 3 after the lorry, which was carrying chemicals and paper, suffered a tyre blowout which led to the fire around 9.30am.
An 800-metre exclusion zone was set up around the vehicle, whose driver was among those who needed treatment, though all were released later.
A Highways Agency spokesman said:
Chief Inspector Adrian Knight from Warwickshire Police describes exactly what happened on the M6 today.
The M6 southbound is now open but fire crews are still working on the closed northbound carriage of the motorway, between Junction 3 and 4.
The Highways Agency have advised that the exclusion zone around the chemical tanker on the M6 has now been lifted.
The northbound carriage of the M6 has been cleared of trapped traffic.
Police are still releasing traffic onto the southbound carriageway.
They are now working with the emergency services to re-open both carriageways as soon as possible.
There is still no access from the M6 Toll onto the southbound carriageway.
Lanes should be open by 7pm.
Warwickshire Fire and Rescue Service will hand the M6 lorry fire scene over to the Highways Agency within the next hour.
Warwickshire Fire and Rescue Service have released a statement about their operation on the M6.
Both lanes of the M6 between junctions 2 and 4, near Coventry, are likely to remain closed for several more hours, following an earlier vehicle fire.
A HGV carrying chemicals along the northbound carriageway between junction 3 and 3a, caught fire after a tyre blowout at 9.45am this morning.
Traffic is being diverted from junction 2 along the A46 Coventry Bypass, the A45 and A425 to rejoin the M6 at junction 4.
A 1,000m exclusion zone has been set up by Warwickshire Fire and Rescue Service. Motorists have been evacuated and will be taken to nearby Corley Services.
Nearby residents are advised to keep their windows closed.
Traffic is now being turned around onto the southbound carriage of the M6.