What is the wording for a temporary or access road construction insurance clause or endorsement?

TEMPORARY ACCESS ROAD

Irrespective of the period of insurance specified in the Policy. the Insurers will indemnify the Insured only for unforeseen accidental loss of or damage to temporary access roads insured under the Policy if such loss or damage occurs prior to such roads being completed or taken into use for their purpose by the contractors, whichever takes place first.