A detailed outline of the Standard Gauge Railway master plan.

1. 1
Route alignment Nairobi – Naivasha SGR development
Media briefing
on Nairobi –
Naivasha SGR
approved route
Nairobi Serena
A. K. Maina
Managing
Director
13-09-16

2. Contents
EA SGR Master plan
Progress made in Kenya (general)
Development of Phase 2A (Nairobi –
Naivasha)
Alignment through Nairobi National Park
Mitigation measures for conservation
Next stages of development
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3. The EA SG Railways Master plan
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4. Approved by the EA Community Secretariat
Each country to develop railways within its territory
Kenya, Uganda, Rwanda and South Sudan have
signed and ratified the SGR protocol for developing
the railway connecting Mombasa to Kampala, Kigali
and Juba
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The EA SG Railways Master plan

5. 1. Mombasa – Nairobi = Construction in progress;
due for commissioning 1st
June, 2017
2. Nairobi – Naivasha = Financing identified; in
the process of fulfilling the conditions precedent
for first disbursement.
3. Naivasha – Kisumu (including New Port at
Kisumu) = Commercial Contracts signed;
financing identification in progress.
4. LAPSSET Railways (Lamu – Isiolo – Nakodok
and Nairobi – Isiolo – Moyale) = Feasibility
Studies in progress
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Progress made by Kenya Railways
(general)

6. Development of Phase 2A (Nairobi
– Naivasha section)
Part of the Mombasa – Kampala – Kigali – Juba SGR
Fast tracked to serve proposed Industrial Parks planned for
locations within Navaisha Sub County and Narok County.
Industrial Parks strategically located within geothermal steam
fields and electricity generation
Locations targeting industries requiring large quantities of
cheap steam and quality electricity supply (such as leather and
textiles)
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7. Phase 2A route
Description
Starts from the West end of the Nairobi South Hub (end point of the
Mombasa – Nairobi SGR);
Turns south-westwards through the Nairobi National Park and west
past Twala and Ongata Rongai Towns;
Crosses Magadi Road next to the Adventists University and Ngong
Road at Embulbul;
Descends into Rift Valley through a tunnel located North-West of
Ngong Hills;
Proceeds North-West to the proposed Industrial Parks at Mai Mahiu
and Suswa
Crosses B3 at Duka Moja
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8. 8

9. Passenger and freight exchange
Stations
Ongata Rongai – behind Ongata Rongai Town
Ngong – along Gataka Road, one (1) kilometre East of
Embumbul Township
Mai Mahiu – approximately 10 kilometres South of Mai
Mahiu Township
Suwsa – within Suswa Township
Proposed Industrial Parks – at proposed Mai Mahiu
Station (Naivasha sub-County) and Suswa Township
Station (Narok County)
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10. Options considered for alignment across
NNP
1. Kibera route – route considered originally for convenient
connection to Nairobi South Station;
2. NNP forest and Langata/Karen route –shorter than Kibera route
and used in the preliminary designs;
3. Savannah route – across savannah of NNP
4. Modified Savannah route – approved by KWS
5. South-East Route – considered due to less sight intrusion
6. Modified South-East Route – considered due to even less sight
intrusion
7. Athi River route – considered due to less interference with the
active part of NNP.
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11. 11
Seven route options through the Nairobi National Park

12. 12
Alignment Route
length (Km)
through
NNP
Route length
(Km) outside
NNP up to
Ngong'
Tunnel
Estimated
construction
cost up to
Ngong’
(Tunnel US$
million)
Estimated
annual extra
cost of
operations
compared to
‘Savannah
Option’ (US$
Million)
1. Kibera 8.5 32.5 674 0
2. NNP Forest/
Langata/Karen
(Preliminary
Designs Option)
16.4 23.0 615 0
3. NNP Savannah
Option (Initial
Preferred
Option)
6.4 28.8 523 0
4. Modified NNP
Savannah
Option Initial
Preferred
Option)
6.0 30.2 543 0
Summary of routes details and cost
estimates

13. 13
Alignment Route
length
(Km)
through
NNP
Route length
(Km) outside
NNP up to
Ngong'
Tunnel
Estimated
construction
cost up to
Ngong’
(Tunnel US$
million)
Estimated
annual extra
cost of
operations
compared to
‘Savannah
Option’ (US$
Million)
5. South-East
NNP 6.5 35.0 611* 3.55
6. Modified South-
East NNP 5.8 38.1 635* 4.22
7. Athi River
Option 10.6 64.3 832* 12.34
Summary of routes details and cost
estimates (cont)
Note: Above three options will require major modification to the Nairobi
South Hub to permit reverse movement of trains from and to Naivasha - cost
estimated at 200 million not included in the construction cost. There will also
be need to excise 50 Ha from NNP required for the modification.

14. 14
SGR crossing the Park
1. SGR crosses the park on a single line bridge
spanning the total width of the Park (6.0 Km);
2. Average height of the bridge above the ground = 18
metres – starting from 8 metres at the entrance into
the Northern side of the Park and 41 metres at the
exit Southern end of the Park;
3. Bridge ensures the Park remains undivided;
4. Clearance under the bridge considered adequate for
smooth flow of Wildlife across the bridge and tourists
traffic;
5. The bridge is similar to that applied across the
Tsavo River where there is evidence wildlife have
already got used to passing under the bridge;

15. Bridge pillar foundations dug deep in the ground to reduce
ground vibration during the operations
Noise deflectors installed on the bridge to reduce noise from
passing trains
Bridge abutments to be outside the park to prevent human
trespass and wildlife escaping
Bridge colour to be chosen for blending with the
environment.
Bridge pillars to be at least 32 metres apart for unrestricted
movement of wildlife in the Park
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Railway crossing the Park: Bridge
specifications

16. 16
Railway crossing the Park: Mitigations at
construction
1. KWS and KR to agree on applicable rules during
construction and conduct periodical sensitization to
construction staff;
2. Bridge to be constructed in three (3) stages ensuring
adequate space for wildlife and tourists traffic
• First stage (2.2 Km) near the Northern Boundary of the
Park; wire mesh fence to be erected enclosing the working
area leaving the rest of the corridor free for passage of
Wildlife
• Second stage (2.1 Km) within the centre of the park; wire
mesh fence to be erected enclosing the working area;
mesh fence of first stage removed again for free passage
of Wildlife.
• Third stage (1.7 Km) - with wire mesh fence for first and
second stages removed.

17. 17
1. The fence enclosing construction area designed and
constructed according to KWS specification to minimise
construction workers/wildlife conflict;
2. Movement of construction equipment and road vehicles
restricted within the fenced out working areas;
3. Armed police and security guards stationed at the
entrance and exit of the working area;
4. Regular patrols for the integrity of working area fencing
immediate repairs.
5. All staff transported outside the Park after working
hours; for clarity, no staff to remain inside the Park after
18.00 hours;
6. No construction activity after 18.00 hours;
Railway crossing the Park: Mitigations at
construction

18. 18
Modified Savannah option: Mitigations
(cont.)
1. Excavated soil to be leveled within the Right of Way.
2. Where excavated soil is to be disposed outside the
Right of Way, KR will request for permission from
KWS and disposal will strictly adhere to KWS and
NEMA guidelines
3. Slurry waste from drilling will be disposed of timely by
the contractor to the satisfaction of KWS;
4. Spoil piles may be landscaped as required by KWS;
5. Portable toilets shall be used inside the Park and only
within the fenced working area;
6. At completion of constructions, the sites shall be
restored to the satisfaction of KWS.

19. 19
Proposed mitigation at operation stage
Noise deflector
Bridge pillars of extra strength and on deep foundation transmitting
minimal vibrations to the surrounding ground during operations

20. 20
Bridge abutment
Proposed mitigation at operation stage
Bridge abutment is located outside the park boundary and park
fencing starts inside the bridge to discourage human trespass and
Wildlife escaping
Unrestricted underpass for wildlife

21. Next stages of development following
approval of the route
Environmental and Social Impact Assessment E&SIA along
the entire route
Stake holders consultations along the route
Land acquisition process
Payments and releasing the corridor
Contractor mobilisation and start of construction
(Construction expected to take 54 months formed by the
length of time to be taken drilling the Ngong Hills Tunnel)
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THANK YOU