The Huguenot Tunnel on the N1 near Paarl in the Boland will be closed for important maintenance work from September this year.
The Roads Agency, SANRAL, says the tunnel will be closed daily from ten in the morning to six
at night from Monday to Thursday for the whole of September, October and November.
The tunnel's electrical and mechanical systems will be upgraded for the first time in more than three decades, to comply with international standards. The tunnel will during that time only be opened for normal traffic from Fridays to Sundays when it will be fully opened.
The upgrading will be suspended for December and January to accommodate holiday makers, but will be resumed after the summer
Sanral has advised road users of alternate roads over the Du Toits Pass, via Gouda and Tulbagh, as well as via Wellington and Ceres.