Sankey Tank Road Widening Final Report

Directorate of Urban Land Transport

August 2010

Sankey Tank Road Widening Report

Sankey Tank Road Widening - Report by DULT

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TABLE OF CONTENTS

1. INTRODUCTION................................................................................................................... 4

1.1 Current Roads scenario in Bangalore City ............................................................. 6 1.2 Vehicle Population in Bangalore City ..................................................................... 6

2. GENERAL REPORT - WIDENING OF SANKEY ROAD ...............................................6

2.1 Existing Traffic Flow Pattern: ................................................................................... 7 2.2 Segmental Arrangements of the study Area: ......................................................... 8

2.2.1 Segment A-B (from Cauvery Junction to Bhashyam Circle). ....................... 9

2.2.2 Segment B-C (Bhashyam Circle to Sankey Tank Park Entrance) .............. 12

2.2.3 Segment C-D ( Sankey Tank Park Entrance to Maramma Temple) ........ 13

2.2.4 Segment D-E ( Maramma Temple to C N R Rao junction) ......................... 14

3. CONCLUSIONS ....................................................................................................................16

LAND ACQUISITION: ............................................................................................................17

Estimates for the project: ......................................................................................................... 21


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LIST OF FIGURES

Sankey road

Existing traffic flow at Sankey road

Segment A- E(from cauvery junction to c n r rao junction)

Segment A-B (from cauvery junction to bhashyam circle)

Segment B-C ( bhashyam circle to Sankey tank park entrance)

On street parking

Segment C-D ( Sankey tank park entrance to maramma temple)

Underpass construction at cnr rao junction

Segment D-E ( maramma temple to c n r rao junction)


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1. INTRODUCTION

The City of Bangalore has been growing at a rapid pace on all fronts. It was Kempe-

gowda who was responsible for building the modern city of Bangalore (1537), erecting a

mud fort here to the north of the now existing fort which covered the area of Avenue

Road and its surroundings. New extensions were added to the old town by creating

Chamarajapet and Sheshadripuram in 1892. Two new bigger extensions, Basavanagudi

and Malleshwaram, Kalasipalyam (near the old fort) and Gandhinagar were laid out

between 1921-1931. During the post-independence period Kumara Park came into ex-

istence in 1947 and Jayanagar was inaugurated in 1948.

After Independence, Bangalore City was made the capital of Mysore State (renamed

as Karnataka state in 1973). Since Independence, Bangalore City has witnessed a phe-

nomenal growth in population and traffic.

The population in the Bangalore Urban Region and Municipalities has increased

from 29 lakhs in 1981 to 42 lakhs in 1991 and 90 plus lakhs in 2004, an increase of 45%

and 43% respectively during the mentioned period. The extent of developed area has

also increased considerably, in 1971 the area was 174.7 sq.kms and today it is about

437 sq.kms.

The city evolved as the garden city of the country due to its salubrious climate. To-

day it has grown into radial city with 9 road corridors forming the principal radial

arms, with concentric orbital corridors. The total road length of the city is about 4200

kms out of which arterial roads account for 500 kms. Most of the corridors carry traffic

volumes much above their capacity, though number of grade separators have been con-

structed and are being constructed, most of them are located in the developed part of

the city and causing a trigger of congestion at adjacent junctions


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The public transport system (bus) is overstressed carrying about 50 lakh commuters in a

daily basis. Congested streets and longer route lengths due to urban sprawl have only served to

reduce bus frequencies further.

Traffic Management measures such as one way systems, parking restrictions, junctions im-

provements etc., are being implemented to ease the congested street network. The ever increas-

ing traffic is fast deteriorating the limited improvement in level of service these traffic manage-

ment measures can offer.

Industrial activity in and around Bangalore City, particularly Information Technology and

Bio Technology related activities continues to grow and attract a large number of people to the

city. The rapid urban population growth with relatively small investments in transport (roads

and buses) has resulted in an increasing gap between the transport demand and supply

The number of motor vehicles registered in Bangalore increased from 2, 36,000 in 1983 to 6,

84,497 by 1992 and 21 lakhs by December 2004, a phenomenal rate of increase 289% and 278%

respectively during the mentioned period. Out of the total 21 lakhs registered vehicles in Banga-

lore, 15.42 lakh vehicles account for 2 wheelers and 3.3 lakhs vehicles account for cars, which

means that 88.17% of total vehicles are personal vehicles. This does not include the floating ve-

hicle population. The result is a low average speed on the network. Traffic management

measures such as one way systems are very much evident, but they too are facing capacity

problems. The sprawl of the city further loads the radial routes, as there have been rise in of

new layouts developed by Bangalore Development Authority.

In order to reduce traffic congestion and ensure smooth Transportation Management major

projects such as construction of Fly-overs, Widening of existing road, construction of

Sub-ways/ Grade Separators and Pedestrian Sub-ways needs to be undertaken. Along with this

there is also a need to improve Public Transportation by introducing Metro Railway and Mass

Rapid Transits facility. Certain short term initiatives such as One-way system, Junction

improvement and Restriction on certain type of vehicles is also necessary to make Bangalore

City free from traffic jams and to ensure safe environment.


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1.1 Current Roads scenario in Bangalore City

Two important National Highways passes through Bangalore City. They are NH-4, from

Tumkur to Kolar and NH-7 from Anathapur to Hosur. Apart from this Mysore Road which

forms the Bangalore-Mysore Highway Corridor is also part of city roads. Bangalore City has

also major arterial roads such as, Kanakapura Road, Bannerghatta Road, Magadi Road and Sar-

japura Road which connects Bangalore City from the other rural areas.

Inside the city center important roads such as, Sankey Road, M.G.Road, Cubbon Road,

J.C.Road, Kempegowda Road, Sheshadri Road, Richmond Road, Residency Road etc., forms the

core traffic areas. Majority of the roads in Bangalore City are operating at above capacity level.

The capacity volume ration in most of the roads is above one.

1.2 Vehicle Population in Bangalore City

Year 19

80

1985 1990 1995 2000 2002 2003 2004 200

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Total

Vehicles

17

5325

3065

89

6010

59

8706

59

1438

057

1738

929

1912

341

2157

480

227

2239

As on 31-03-2010 vehicle population of Bangalore stands on 34, 90,565.

2. General Report - Widening Of Sankey Road

Name of work: Widening of Sankey Road (From Yeshwanthpur circle to Kaveri theatre

junction on Bellary road)

Authority: Government of Karnataka Notification No: UDD 154 BEM RUPRA 2004 dt

8.01.2005. Notification by BMP No KDTP/RW/Phase-1 Sector-2/C2/PR2/2004-05 dt.

02.03.2005.

Cost Estimate: Rs 3320.00 Lakhs


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The road from Yeshwanthpur circle (NH 4) to Bellary Road (NH 7) at Kaveri Junction is

connecting both the Highways via C V Raman circle. Maramma temple and Sankey Tank Road.

The traffic coming from Tumkur side and Mattikere M S Ramayya Nagar and Mekri Circle is

passing via this road; there by the traffic moving in this road is very high considering the exist-

ing road width of 8.00 mtr to 11.00 mtr with dual two carriage way up to professor CNR Rao

circle. Hereafter 11.50 m single lane carriage way up to Sankey tank.

Figure 1: Sankey Road

BBMP has notified to widen this road to 30.00m with dual three lane carriage way of 11.00

m with drain and footpath on both sides and median of 1.20m vide notification No

UDD/154/BEMRUPRA2004/dated 18.01.2005. As per the traffic study conducted at Ye-

shwanthpur Bus stop, Total commercial vehicles passing in 24 hours are 38135 Nos/43645.60

PCU. Further according to revised master plan 2015, the road width from Yeshwanthpur circle

to Pro. CNR Road circle 45 mts has been approved. The alignment plan is revised accordingly.

2.1 Existing Traffic Flow Pattern:

The existing traffic flow around the Sankey road is as reflected in the figure 2 below. The

Ramana Maharishi road is a two way road which takes the maxium load of the traffic .Sankey


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road is a two way road with a magic box at the kaveri junction, the adjacent road next to the

Sankey tank which connects to the CV Raman Road is partially one way. The 15th main road

which starts from Bhashyam circle is a one way along with Sampige road.

Figure 2: Existing traffic flow at Sankey Road

2.2 Segmental Arrangements of the study Area:

The Sankey road was divided into different segments, for detail justification of the road

widening as shown in figure 3 i.e. Segment A-E from Cauvery Junction to C N R Rao Junction.

The segments are as follows:

A. Segment A-B (from Cauvery Junction to Bhashyam Circle).

B. Segment B-C ( Bhashyam Circle to Sankey Tank Park Entrance)

C. Segment C-D ( Sankey Tank Park Entrance to Maramma Temple)

D. Segment D-E ( Maramma Temple to C N R Rao junction)


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Figure 3: Segment A- E (From Cauvery junction to C N R Rao junction)

2.2.1 Segment A-B (from Cauvery Junction to Bhashyam Circle).

This segment starts from Cauvery junction to Bhashyam circle .This segment has a under

pass or the other name given by BBMP as the Magic box which takes the flow of traffic from

Bhashyam circle towards the Winsor Manor.

Presently, the through traffic flow on the Ramana Maharishi road i.e. adjacent to the Palace

ground is diverted towards left on the Sankey road and provision to take a ‘U’ turn is made on

top of the Magic box which creates chaos at the entrance of the stretch. It is observed on the

ground reality that there is smooth flow of traffic once the magic box is crossed.


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Though BBMP is widening the Ramana Maharishi road to 45 meters and the work is under

progress along with the proposal of underpass at the Kaveri junction is in line, once these things

are completed the conflict of ‘U’ turn will get eliminated and the problem will be solved. Hence,

as per DULT’s observations, road widening at segment A-B is not required and BBMP should

have a second thought on the same.

Figure 4: Segment A-B (from Cauvery Junction to Bhashyam Circle)

As per the BBMP survey total numbers of trees on this stretch are 57 out of which 37 trees

could be saved and 18 trees will be removed. Since, this stretch should not be widened consid-

ering the proposals in line, the entire trees on this stretch can be saved.

Details Of Trees From Kaveri Junction To Bhashyam Circle Of Sankey Road

Sl.

No

Details of trees on Left side Details of trees on Right side Details of trees on both sides

1

Total

No of

trees

No of

trees

could be

saved

No. of

trees to be

removed

Total

Number

of trees

No of trees

could be

saved

No of trees to

be removed

Total

No of

trees

No. of trees

could be

saved

No. of trees to be

removed

41 25 16 32 14 18 57 39 18

Note: As per BBMP Total Number of trees that will be saved on this stretch .i.e. on Segment A-B is 39 out of 57 and 18 trees will be re-

moved but as per DULT’s proposal entire 59 trees will be saved as widening is not required .

2.2.2 Segment B-C (Bhashyam Circle to Sankey Tank Park Entrance)

The segment starts from Bhashyam Circle to Sankey Tank Park Entrance. This is one of the

most critical segments as it lies on the tank bund. The upstream side of the road is the Sankey

tank and the downstream is the government land and some unauthorized structures have come

up in the course of time. In other words the downstream land which belongs to government has

been illegally encroached.

When this stretch is compared to the segment A-B, the dissimilarity of road width from 33m

to 11m can be noticed, creating the bottle neck and thus resulting in long traffic queues during

the peak hours.

As per the ground reality this segment has to be widened up to decongest the traffic flow.

Slight changes in alignment have to be done to protect some of the trees on the upstream side.

The positive part of this stretch is that no property acquisition is required as the property be-

longs to the government. The only land to be acquired is about 600 sqm (as per the BBMP rec-

ords the 600sqm land is also illegally encroached). This is as shown in figure 5.

Figure 5: Segment B-C (Bhashyam Circle to Sankey Tank Park Entrance)


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2.2.3 Segment C-D (Sankey Tank Park Entrance to Maramma Temple)

This segment starts from Sankey Tank Park Entrance to Maramma Temple. This is the

stretch where in the decision has to be made carefully, as per the details explained earlier, upon

detailed study, this segment which lies between the segments B-C and D-E which as per the

ground reality one segment has to be widened and the other is already widened. Thus making

this segment a bottle neck. For this segment of road two options are proposed as mentioned be-

low:

On street parking is observed on this Stretch which takes away almost one lane Of the

road thus causing reduction in carriage way and leading the v/c ratio to reach <1.

As a short term measure on street parking should be removed.

Since the other two segments out of which one is already widened the other has to

be widened. It is not pragmatic to have a bottle neck between the two wide stretches,

considering the long term future projection and growth of the Bangalore traffic this

road has to be widened.


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Figure 6: Segment C-D (Sankey Tank Park Entrance to Maramma Temple)

2.2.4 Segment D-E ( Maramma Temple to C N R Rao junction)

The segment starts from Maramma Temple to CNR Rao junction. In this segment an under

pass is under construction at CNR Rao junction. This has already led for chopping of the trees at

one side. Once the underpass commences trees at both the sides will have to be chopped off.

The utility shifting is under progress. The road is already widened. The details are as shown in

the figure 7

Figure 7: Underpass construction at CNR Rao Junction


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Figure 8: Segment D-E (Maramma Temple to C N R Rao junction)


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3. Conclusions

Short Term Measure:

Ban On street parking on Segment C-D which is causing loss in road space of almost 1

lane of the road.

Provide Auto bays / off street auto stand at the junction of Malleshwaram 18th cross.

Traffic Management schemes like one ways can be adopted in consultation with traffic

police.

Junction improvements to be taken up at Micro level at Kaveri Junction, Bhashyam Cir-

cle and at the Sankey tank park entrance.

Long Term Measure:

Road widening is not required for the Segment A-B. Redesign of the segment is required

as per the ground reality.

Road widening has to be done for the segments B-E with some changes in the alignment

drawings.

Segment D-E is already been widened due to the on going under pass construction.

Segment C-D is a narrow stretch with lesser carriage way width, simple enforcement can

be done on short term measure. Considering that Sankey tank road is wide enough at

both the ends i.e. from segment A-B and D-E, but the middle stretch is required widen-

ing to avoid bottle neck.

As per RMP 2007-15 it is suggested for 30m-45m wide road and also Bangalore CTTP

report by RITES suggest for the same.

Alignment drawings have to be changed slightly to avoid tree cutting, particularly on

the tank bund near the park entrance.


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Annexure:

Land Acquisition:

The adjoining property along with this road mainly belongs to Indian Institute of Science,

State Forest and Education Departments up to Sankey Tank. Total area of land required is

39280.00 sqm in which private property of 600.00 sqm and Government Land 38680.00 sqm.

NAME OF ROAD: SANKEY ROAD

From Yeshwanthpur circle to Prf C N Rao circle

Details of property/Land required for widening of Road for 45.00 Mtrs & 30.00 Mtrs

Sl.No Private

property

GOI GOK BBMP

Property

Grand Total

Total

Nos

Area in

Sq m

Total

Nos

Area in

sqm

To-

tal

Nos

Area in

Sqm

Total

Nos

Area in sqm Total

Nos

Area in

Sqm

1. L/S - - 4 12600.00 2 2700.00 2 600.00 8 15900.00

2. R/S 4 600.00 5 11020.00 2 2800.00 2 8960.00 11 23380.00

Total 4 600.00 9 23620.00 4 5500.00 4 9560.00 19 39280.00


From Yeshwanthpur Circle to Prf C N Rao Circle Details of Property/Land required for widening of Road for 45.00 Mtrs & 30.00 Mtrs

L/S STATEMENT

Sl.

No

CHAINAGE OWNER MEASURE

URE-

MENT IN

Mtrs

AREA Sq

mtrs

REMARKS

GOI

1. 0 500 IISC 500X10 5000.00 0.00 to 950.00 mts 45

mts ROW condition

thereafter 30mts

2. 500 900 IISC 400X12 4800.00

3. 900 1050 POSTAL

DEPARTMENT

150X7 1050.00

4. 1050 1300 IISC 250X7 1750.00

GOK

5. 1300 1500 FOREST DEPARTMENT 200X6 1200.00

6. 1500 1800 FOREST DEPARTMENT 300X5 1500.00

7. 1800 2500 SANKEY TANK 700X10 - Tank Area

BBMP

8. 2500 2600 SHIVAJI SMARAK (BBMP) 100X5 500.00 JN 1 MPR

9. 2630 2650 PRIVATE PROPERTY 20x5 100.00 JN 1 MPR

10. 2650 3150 AREA NOT REQUIRED - - Width available

11. 31

50

33

38

- - Recently widened

Total 15900.00 Sqm


From Yeshwanthpur Circle to Prf C N Rao Circle Details of Property/Land required for widening of Road for 45.00 Mtrs & 30.00 Mtrs

R/S STATEMENT

Sl.No CHAINAGE OWNER MEASURE-

MENT IN Mtrs

AREA Sq

mtrs

REMARKS

GOI

1. 0 500 IISC 500X10 5000.00 From CH 0.00 to 950.00 Mtrs

45 mts ROW is considered

thereafter 30.00 mtrs

2. 500 640 IISC 140X10 1400.00

3. 640 900 BHEL 260X9 2340.00

4. 900 1000 BHEL 100X6 600.00

5. 1000 1280 BHEL 280X6 1680.00

6. 1280 1540 MAHARANI COLLEGE 240X7 1680.00 GOK

7. 1540 1700 PUC BOARD KARNATAKA

EDUCATION BOARD

160X7 1120.00 GOK

8. 1700 1780 PARK BBMP 80X7 560.00 BBMP

9. 1780 2500 SANKEY TANK 700x12 8400 BBMP

10. 2500 2600 EDUCATION SOCIETY 100X5 500 JN 1 MRP

PVT 11. 2630 2650 BHARATH PETROL BUNK 20X5 100.00 JN 1 MRP

12. 2650 3150 - - -

13. 3150 3338 UNDER PASS

CONSTRUCTED

- ROAD WIDEN

Total 23380.00 Sqm

Estimates for the project:

The estimate is prepared in six reaches:

1. First reach from CH 0.00 to 500.00 mtrs is having ROW of 45 mtrs: In this portion dual

three lane main carriage way of 11.00 mtrs, with both sides service roads of 7 mtrs, 2.5

mtrs median, RCC drains and footpaths are proposed as per detailed cross section.

2. Second reach from CH 50.00 to 920.00 mtrs is having ROW of 45 mtrs: In this portion

dual three lane main carriage way of 11.00 mtrs with both sides service roads of 7 mtrs

median. RCC drains and footpaths are proposed as per detailed cross section.

3. Third reach from CH 920.00 to 1800.00 mtrs having ROW 30 mtrs: In this portion dual

three lane main carriage way of 11.00 mtrs, with 1.2 mtrs median, RCC drains and foot-

paths are proposed as per detailed cross section.

4. Fourth reach from CH 1800.00 to 2200.00 mtrs is in tank portion, the widening is pro-

posed up to 11 mtrs to have dual three lane carriage way of 11 mtrs. It is proposed to

detain the existing carriage way of 11 mtrs to accommodate three lane is proposed on

D/S side of the tank at 3 mtrs below the existing road level by widening the embank-

ment. To minimize the embankment and accommodate the road within the existing toe

line of tank an RCC retaining wall is proposed.

The road from CH 1800.00 to 1900.00 mtrs is proposed for widening towards up-

stream side (parking) to avoid temple’s area. The road from CH 1900.00 to 1975.00 mtrs

is having down ramp with 4% gradient to negotiate the road levels. And thereafter up to

2500.00 mtrs same level is maintained. From CH 2500.00 to 2575.00 the road up ramp

with 4% gradient is proposed which joins the existing road level.

The retaining wall with required section, height ranging from 3 mtrs to 7 mtrs is

proposed with M 15 concrete. Reinforcement at 6 kg/sqmt is provided. The bottom

width of wall is proposed minimum of 0.6 times the height of wall. Filter media of 0.5 m

thick is provided by the side of the wall. A longitudinal drain along junction of slope

and road of size 500mm X 900 mm is proposed with RCC M 20 grade concrete including

reinforcement. To drain out the water from drain. Hume pipe of 250 mm diameter em-

bedded in concrete is also proposed. The embankment slope being steep (1:1), granite


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slabs of 100mm thick is provided with pointing to cover the earth surface. In this portion

median is not proposed as the carriage ways are in different level.

5. Fifth reach from CH 2200.00 to 2600.00 mtrs is in tank portion, the widening is proposed

upto 11 mtrs to have dual three lane carriage way of 11 mtrs. It is proposed to retain the

existing carriage way with footpath on either side. Widening and construction of anoth-

er carriage way of 11 mtrs to accommodate three lanes is proposed on D/S side of the

tank at 3 mtrs below the existing road level by widening the embankment. To minimize

the embankment and accommodate the road within the existing toe line of tank an RCC

retaining wall is proposed. From CH 2500.00 to 2575.00 the road up-ramp with 4% gra-

dient is proposed which joins the existing road level.

6. Sixth reach from CH 2600.00 to 3338.00 mtrs having ROW 30 mtrs:

In this portion dual three lane main carriage way of 11.00mtrs, with 1.2 mtrs median,

drains, ducts and footpaths are proposed as per detailed cross section.

The median has been proposed to be constructed with M20 concrete using kerb, be-

tween walls of media it is proposed to fill up with selected earth, for planting flower bed

and shrubs. The side drains will be constructed with RCC covered with RCC slab. Foot-

path beyond drain portion is proposed by laying interlocked paver blocks over dully

filled with suitable materials.


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SANKEY ROAD (FROM YESHWANTHPUR CIRCLE TO KAVERI JUNCTION)

LIST OF UTILITIES

Sl.No DETAILS Left Side Right Side

1. No. of Light Towers 1 0

2. No. of Light poles 64 68

3. No. of Telephone Poles 15 11

4. No. of Tele Junction Boxes 8 3

5. No. Of Electric Poles 32 31

6. No. of KEB Junction Boxes 22 13

7. No. of Transformers 2 2

8. No. of traffic signals 13 18

9. No. of Trees 320 516

10. No. of man holes 15 6

Total 492 668

Documents

Sankey Tank Road Widening Final Report