This document describes a study of National Highway 12 between Jaipur and Deoli in Rajasthan, India. The highway is 148.77 km long and includes one major bridge, 26 minor bridges, four flyovers, and two railway over bridges. It discusses the scope of work for the highway project, which involves constructing exit and entry ramps, service roads, culverts, and widening bridges. It also outlines the process of highway construction, including subgrade preparation, subbase construction, base construction, and surface course construction using materials like asphalt and concrete. Highway maintenance objectives are also discussed.

1. STUDY OF JAIPUR-DEOLI HIGHWAY NH-12
Mandavi Bansal
2012btechce012
Prof. Jaya Gupta
ABSTRACT: The Highway Project described in this report is in construction and operation period, and runs from
km 18+700 to 165+000 between Jaipur and Deoli in the State of Rajasthan as shown in Fig 1. The Highway Road is
a Section of National Highway – 12, starting at Jaipur in the State of Rajasthan and traversing through the States of
Rajasthan and Madhya Pradesh. Total length of NH-12 is about 915 km. . Project stretch runs in mostly plain terrain
and has mostly flat gradients which have 1 - Major Bridge and 26 - Minor Bridge, 4 - Flyovers, and 2-ROB's on the
main Carriageway.
1 INTRODUCTION
1.1 SCOPE OF WORK
The scope of the Access Controlled Highway Project
as detailed in the Concession Agreement. Exit &
Entry ramps on the project highway to be provided. A
length of Km 18.381 service road is to be provided on
either side of Project Highway.09 nos. of RCC Box
culverts are to be newly constructed, 34 nos. of Box
culverts are to be widened and 81 nos. of pipe
culverts are to be improved.
1.2 ORGANISATION
In terms of Concession Agreement, National
Highways Authority of India is working as Authority.
Project Implementation Unit at Tonk is headed by
Project Director followed by Managers (Technical)
and other Administrative staffs. Independent
Engineer took charge of duty in the Mid of Sep-2010.
The team at site is headed by Team Leader. All key
staff members and supporting staff have been
mobilized.
2 CONSTRUCTION AND MAINTENANCE
2.1 Highway Construction
Highway construction is generally preceded by
detailed surveys and subgrade preparation as shown
in Fig 2. Typically, construction begins at the lowest
elevation of the site, regardless of the project type,
and moves upward. By reviewing the geotechnical
specifications of the project, information is given
about:
 Existing ground conditions
 Required equipment for excavation, grading,
and material transportation to and from the
site
 Properties of materials to be excavated
 Dewatering requirements necessary for
below-grade work
 Shoring requirements for excavation
protection
2.2 Subbase Course Construction
A subbase course is a layer designed of carefully
selected materials that is located between the
subgrade and base course of the pavement. The
subbase thickness is generally in the range of 4 to 16
inches, and it is designed to withstand the required
structural capacity of the pavement section. Common
materials used for a highway subbase include gravel,
crushed stone, or subgrade soil that is stabilized with
cement, fly ash, or lime. Permeable subbase courses
are becoming more prevalent because of their ability
to drain infiltrating water from the surface. They also
prevent subsurface water fromreaching the pavement
surface.
2.3 Base Course Construction
The base course is the region of the pavement section
that is located directly under the surface course. If
there is a subbase course, the base course is
constructed directly about this layer. Otherwise, it is
built directly on top of the subgrade. Typical base
course thickness ranges from 4 to 6 inches and is
governed by underlying layer properties. The base
course materials are often treated with cement,
bitumen, calcium chloride, sodium chloride, fly ash,
or lime. These treatments provide improved support
for heavy loads, frost susceptibility, and serves as a
moisture barrier between the base and surface layers.
2.4 Surface Course Construction
There are two most commonly used types of
pavement surfaces used in highway construction:
hot-mix asphalt and Portland cement concrete. These
pavement surface courses provide a smooth and safe
riding surface, while simultaneously transferring the
heavy traffic loads through the various base courses
and into the underlying subgrade soils.

2. 2.5 Highway Maintenance
The overall purpose of highway maintenance is to fix
defects and preserve the pavement's structure and
serviceability. Defects must be defined, understood,
and recorded in order to select an appropriate
maintenance plan. Defects differ between flexible and
rigid pavements.
There are four main objectives of highway
maintenance:
 repair of functional pavement defects
 extend the functional and structural service
life of the pavement
 maintain road safety and signage
 keep road reserve in acceptable condition.
Fig-1 Location
Fig-2 Pavement Layer
Table-3 SALIENT FEATURES
Date of Agreement : 16th Dec. 2009
Period of Construction: 910 days
Extension of Time Recommended: 202 days
Total Project Cost (TPC): Rs. 792 Crores
Capital Cost: Rs. 1733 Crores
Concession Period: 25 Years
Project Length: 148.77 Km
No. of Bypasses: 08
No. of Major Bridge: 01
No of Minor Bridge: 26
No of Flyover: 04
No of ROB: 02
No of VUP’s: 11
No of PUP’s/CUP: 08
No of Toll Plaza: 02
No of Widening of Box Culverts: 34
No of New RCC Box Culverts: 09
No of Improvement of Pipe Culverts: 81
3 PREFERENCES AND ABBREVIATION
− Fig-1,Table-1 Modules provided by Aarvee
Associates Architects, Engineers & Consultant Pvt.
Ltd
−Fig-2 The South African National Roads Agency
Limited
 ROB- Railway Over Bridge
 VUP- Vehicle Under Pass
 CUP- Cattle Under Pass
 PUP- Public Under Pass
 RCC- Reinforced Cement Concrete
4 CONCLUSIONS
Four laning of Km 119.748 have been completed and
Provisional Completion Certificate issued on
27.09.2013 and Project Highway has been put on
Commercial use from midnight at 23:47 PM on 27th
Sep 2013 for 119.748 Km.
5 REFERENCES
- Gun Alan, K.N. “Highway Construction.” The
Handbook of Highway Engineering. Ed. T.W. Fwa.
CRC Press, 2005.
-"Highway engineering." McGraw-Hill Concise
Encyclopaedia of Science and Technology.New
York: McGraw-Hill, 2006. Credo Reference. Web. 13
February 2013.
-Van Wijk, Ian. “Highway Maintenance.” The
Handbook of Highway Engineering. Ed. T.W. Fwa.
CRC Press, 2005
-Modules provide by Aarvee Associates Architects,
Engineers & Consultant Pvt. during internship
period.