Road Traffic Regulation Act 1984 S.14: Temporary Prohibition of Traffic
Location: Trewinnow to Pepo Lane, Grampound
Timing: 29th October 2015 (0930 to 1630 hours)
Contact: Western Power Distribution Tel: 0800 6783105
You can visit the http://roadworks.org/?tm40830 website to view more detail of any roadworks. For this specific notice enter 45151919 in the search box (or find Grampound, select map layer 'road closures' and select next 3 months).
It's a good website but fiddly to get to a specific future notice unless you know exactly where it is.