Temporary Diversions
Where the construction zone would near the road entirely, the remaining carriageway stretch would be inadequate for the traffic and create large retard and there is no appropriate a replacement route, it will be mandatory to build a short-term carriageway for entirely or segment of the traffic.
Where the construction zone would near the road entirely, the remaining carriageway stretch would be inadequate for the traffic and create large retard and there is no appropriate a replacement route, it will be mandatory to build a short-term carriageway for entirely or segment of the traffic.
This is most common situation in the cases of any major repair or reconstruction of cross drainage works and failure due to, for example, floods. The temporary carriageway must satisfy the of pavement following requirements:-
(i) It should have smooth horizontal and vertical profile with smooth vertical and horizontal curves.
(ii) It should not get over-topped by flood or drainage discharges under any condition,
(iii) It should have adequate capacity to cater to the expected traffic,
(iv) It should be dust free and should ensure clear visibility at all times of day and night; and
(v) Barricading should be provided to prevent construction material falling on the diversion.
(vi) Layout for sign and traffic control devices for temporary diversion.
