The Beaminster Tunnel in Dorset is unlikely to be re-opened for several months.
It was closed earlier this month after a landslip that killed two people.
Engineers have found that the slope at both ends of the tunnel is extremely dangerous and liable to further collapses. Dorset County Council has brought in experts to find the best way forward.
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Bright and possibly frosty start with cloud building later and showery outbreaks. It's milder but temperatures still low for late April.
It's a bright possibly frosty start to the day, showery outbreaks later. It'll be cloudy when it's not raining.