Feasibility Report Month: Aug 2016
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Project : Improvement of SH-79 from Hanur to Tamil Nadu Border including connectivity from Palar to Hoganakkal Falls (ODR) in the State of Karnataka Document : Feasibility Report Month: Aug 2016 FEASIBILITY REPORT Improvement of SH-79 from Hanur to Tamil Nadu Border including Connectivity from Palar to Hoganakkal Falls (ODR) in the State of Karnataka 1.0 INTRODUCTION AND BACKGROUND The Government of Karnataka (GoK) through the Government of India (GoI) has received in principal approval for a loan from the Asian Development Bank (ADB) towards Karnataka State Highways Improvement Project–III (KSHIP- III) for developing State Road network adopting innovative financial models under Public Private Partnership (PPP). The Executing Agency (EA), the Public Works Department, represented by the Project Director, Project Implementation Unit, Karnataka State Highway Improvement Project (PIU-KSHIP) has already completed a Pre-Financial Feasibility Study for about 4,403 km of select corridors of the Core Road Network (CRN) of the state and based on the outcome of this study, it intends to improve about 1,350 km of state highways under this ADB finance. With a view to this, the EA has engaged a consultant to prepare the Detailed Project Report and carry out Transaction Advisory Services for Karnataka State Highway Improvement Project-III (KSHIP III)”, for project roads drawn under Group II. Start Point at Hanur (SH-79) End Point at Hoganakkal PROPOSED PROJECT ROAD Falls (ODR) MDR ODR SH-79 End Point at TN Border Palar (SH-79) Start Point at Palar (ODR) Figure-1 Index map showing the Proposed Project Road (Hanur to TN Border and Palar to Hoganakkal Falls) Page 1 of 16 Project : Improvement of SH-79 from Hanur to Tamil Nadu Border including connectivity from Palar to Hoganakkal Falls (ODR) in the State of Karnataka Document : Feasibility Report Month: Aug 2016 PIU-KSHIP has planned to: . Upgrade / strengthen Hanur to Tamil Nadu Border section of SH-79 & MDR outside wildlife sanctuary area and to strengthen the carriageway without widening & geometric improvement inside wildlife sanctuary areas . Improve the connectivity to Hoganakkal Falls (Palar to Hoganakkal), which includes improvement of riding quality by rehabilitation of the existing deteriorated pavement surface and adding Parapet / Railing to all Bridge structures which is currently missing. Proposed project roads have been shown in Figure-1. 2.0 DESCRIPTION OF THE PROJECT ROAD Total length of the proposed project road will be 95 km, which includes: a) Hanur (Ch. Km 85+815 of SH-79) to Tamil Nadu border near Palar (Ch. Km 163+023 of SH-79) – 65.5 km End point at b) Palar to Hoganakkal Falls (ODR) -29.5 km Tamil Nadu Border near Palar. The project road in majority length has intermediate lane carriageway of 5.5 m width (Figure-2), about 1.6 km of project road has two lane i.e. 7.0 m wide carriageway (Figure-3). Project road at many locations has sharp horizontal and vertical curves not conforming to design standards as shown in Figure-4 and Figure-5. The project road is located in plain terrain (9 km), rolling terrain (50.0 km) and hilly terrain (36 km). Out of 36.0 km of the hilly terrain, 8.4 km stretch is above 1,000 m from mean sea level. Figure-2 Project Road with 5.5 m Figure-3 Section of Project Road with carriageway 7.0 m carriageway Page 2 of 16 Project : Improvement of SH-79 from Hanur to Tamil Nadu Border including connectivity from Palar to Hoganakkal Falls (ODR) in the State of Karnataka Document : Feasibility Report Month: Aug 2016 Figure-4 Sharp vertical curve with Figure-5 Sharp horizontal curve observed deficient sight distance. at some locations on project road. The project road passes through various small and big settlements and in existing condition it is observed the local city traffic and congested lanes impede the free flow of through traffic Some of the major settlements along project road include Hanur, Kaudalli & M.M. hills. The Male Mahadeshwara Temple at Male Mahadeshwara Hill (M.M. Hills) is a pilgrim town located near existing chainage km 133+300 (design Ch. Km 133+750) of the proposed project road. The ancient and sacred temple of Sri Male Mahadeshwara is a very popular Shaiva pilgrim centre. It draws lakhs of pilgrims from the states of Karnataka, Tamil Nadu and other parts of India. Apart from being a pilgrimage centre, M.M. Hills possess natural beauty in the form of large tracts of forest area. The beautiful landscapes of hills and valleys are covered with extensive forests. M.M. Hills is bound by the River Cauvery to the north-east and by the River Palar to the south. Thus, it forms an important tourist place. 81.789 km out of 95 km of the proposed project road is passing through two Wildlife Sanctuaries namely Malai Mahadeshwara Wildlife Sanctuary and Cauvery Wild Life Sanctuary. 49.883 km stretch of the project road traverse through Malai Mahadeshwara Wildlife Sanctuary and 31.906 km stretch of the project road traverse through Cauvery Wildlife Sanctuary as given in Table-1. Overall assessment reveals that the project road needs to undergo geometric improvement for both horizontal and vertical alignment. Table 1 Location of Wildlife Sanctuary along the Proposed Project Road Existing Chainage Km Design Chainage km Side Name of the Forest Start End Length (km) Start End Length (km) Both Malai Mahadeshwara 89+020 91+810 2.790 88+975 91+765 2.790 sides Wildlife Sanctuary Both 95+064 97+470 2.406 94+938 97+344 2.406 Cauvery Wildlife Sanctuary sides Both Malai Mahadeshwara 103+807 150+900 47.093 104+107 151+200 47.093 sides Wildlife Sanctuary Near Near Both 162+670 29.5 150+825 29.5 Cauvery Wildlife Sanctuary Hoganakkal Hoganakkal sides Total Length 81.789 81.789 Page 3 of 16 Project : Improvement of SH-79 from Hanur to Tamil Nadu Border including connectivity from Palar to Hoganakkal Falls (ODR) in the State of Karnataka Document : Feasibility Report Month: Aug 2016 Figure-6 Project Road inside Figure-7 Project Road inside Malai Mahadeshwara Wildlife Sanctuary Cauvery Wildlife Sanctuary Agriculture is the main land use with very few industries along project road. Commercial activities is only noted when alignment passes through settlements however no major industries are noted along project road. Major settlements along the project road are Hanur, Kaudalli, Male Mahadeshwara, Palar and Gopinatham. Issues along the Project Road: i) Proposed Project alignment, passes through wild life sanctuary and 8.4 km stretch is above 1,000 m from mean sea level as such improvement proposal needs to be carefully formulated keeping in mind minimal impact on such Eco sensitive areas and also catering to existing traffic needs. Figure-8 Damaged pavement ii) Pavement is damaged at some sections condition near Tamil Nadu Border due to lack of maintenance and deficiency in drainage as shown in Figure-8. iii) Sharp hair pin bends are there in the alignment section passing through M.M. Hills which need to be addressed keeping in view the fact that the section is passing through wildlife sanctuary. iv) At many locations school and religious structures exist along the project road as such improvement proposal need to be carefully prepared to have minimal impact on such structures 3.0 ENGINEERING SURVEY AND INVESTIGATIONS Proposed project road starts in Hanur at Km 85+815 of SH-79 and ends at Tamil Nadu border near Palar Km 163+023 of SH-79 (approximate length 65.5 km). The ODR section starts at Palar at Ch. Km 162+670 and ends near Hoganakkal Falls (approximate length 29.5 km). Page 4 of 16 Project : Improvement of SH-79 from Hanur to Tamil Nadu Border including connectivity from Palar to Hoganakkal Falls (ODR) in the State of Karnataka Document : Feasibility Report Month: Aug 2016 Existing Condition: The existing road is flexible pavement having predominantly Intermediate lane carriageway of 5.5 m width and 1.6 km of project road has two lane i.e. 7.0 m wide carriageway. Small section of project road of about 200m length is 4 lane divided carriageway near Malai Mahadeshwara Temple. The earthen shoulder width varies from 0.5m to 1.5m through the alignment. About 8kms of project length has paved shoulders on both sides. Width of paved shoulder varies from 0.5 m to 3.0 m. Roadway Geometrics: The existing road is having substandard geometry in sections which does not conform to IRC:SP:73-2015. Road Intersections: There are 7 major roads (3 in outside sanctuary area and 4 inside the sanctuary area) and 19 minor road/village roads (16 in outside sanctuary area and 3 inside the sanctuary area) connecting the project road. All the junctions outside the sanctuary area have been proposed for improvement as per IRC guidelines and junctions within the sanctuary area will be improved within the available ROW without disturbing the existing trees, if any. Existing Bridges / Structures: There are 9 minor bridges, 2 Causeways and 157 culverts (73 Hume pipe, 4 box culverts and 80 slab culverts) along the project road. There is no existing Major Bridge along the project road. Railway Crossing: There is no Railway Crossing along the Project Road. Pavement Condition: The existing pavement is flexible and the composition of layer predominantly consists of bituminous layers laid over granular base / WMM and granular sub base/river material with boulders / moorum present at some locations. The bituminous surfacing varies in the range of 20 mm to 120 mm and the Granular Base/sub base layer varies from 60 mm to 380 mm.