THE MINISTER OF STATE IN THE MINISTRY OF ROAD TRANSPORT AND HIGHWAYS(SHRI R.P.N.SINGH)
(a) to (d) The development and maintenance of National Highways (NHs) is a continuous
process and the NHs in the country are being kept in traffic worthy condition within the
available resources, depending upon traffic density and inter-se priority of works.Actions for
restoration of the stretches of NHs damaged in various states due to floods, rains, etc., are
accordingly taken up from time to time to keep such stretches in traffic worthy conditions.The
maintenance of existing roads are carried out by the Contractor/Concessionaire, to keep them in
traffic worthy condition, as part of their obligations under contract/concession agreement
wherever 4/6 laning works are under implementation under National Highway Development Project (NHDP).  The maintenance of existing stretches of NHs entrusted to the National Highways Authority
of India (NHAI) are carried out either directly by NHAI or through the concerned State Public
Works Departments (PWDs) with funds provided by NHAI in case the works of improvement to  4/6
laning have not yet started in such sections.  All such NHs including those in the State of
Rajasthan are maintained in traffic worthy conditions as per availability of funds, traffic
density, extent of damages and inter-se priority.
The works for improvement of NHs to 4-lane standards are primarily being taken up under
NHDP-Phases-I, II & III. The detailed status of works under NHDP-Phases-I, II & III in the
country including Rajasthan indicating the total length, approved estimated cost, expenditure
incurred (upto 31.03.2009), length completed, length under implementation, etc. are at Annex-I.
State-wise and project-wise funds are not allocated under NHDP and the expenditure for NHDP is met
out of funds allocated to NHAI. Improvement of some NH stretches to 4-lane standards, other than
under NHDP, are also taken up through State Public Works Departments (PWDs) and Border Roads
Organization (BRO). The total sanctioned cost of such ongoing improvement works on about 153 km
length of NH stretches is Rs. 762.78 crore. The expenditure incurred on the same is about Rs. 340
crore.The details of the steps taken to expedite four/six laning of NHs is at Annex-II.