Operator
|
Route
|
Year
|
Date
|
Service changes
|
 (Current) Known as prior to 1 November 2001
|
Toa Payoh ↔ Bedok Rd
|
1974
|
3 February
|
Re-numbered from Service 155A between Toa Payoh Town Ctr Ter and Bedok Rd Ter under 1974 Bus Rationalisation.
|
Toa Payoh ↔ Upp Changi Rd 8¼ ms
|
10 November
|
Amended to Upp Changi Rd 8¼ ms (13.3 km) Ter.
|
1975
|
2 March
|
Amended to ply Sims Ave towards Bedok Rd Ter with the conversion of Geylang Rd to one-way traffic.
|
1976
|
18 July
|
Amended to skip Tanah Merah Besar Rd and Nicoll Dr on Sundays and Public Holidays.
|
30 December
|
Amended to ply Sims Ave/Geylang Rd and the extended Tg Katong Rd, skipping Guillemard Rd.
|
1979
|
TBC
|
Relocated to Upp Changi Rd 15.5km Ter.
|
Toa Payoh ↔ Somapah Depot
|
1980
|
16 June
|
Amended to Somapah Depot.
|
28 December
|
Amended to ply Upp Changi Rd East, skipping Upp Changi Rd.
|
Toa Payoh ↔ Marine Parade
|
1981
|
21 June
|
Shortened to Marine Parade Ter.
|
Marine Parade ↺ Circuit Rd
|
1983
|
26 December
|
Shortened to loop at Circuit Rd from Marine Parade Ter and amended to ply Marine Parade Rd, skipping East Coast Rd.
|
Marine Parade ↔ Ang Mo Kio
|
1987
|
19 April
|
Extended to Ang Mo Kio Int.
|
1994
|
TBC
|
First bus from Marine Parade Ter brought forward to 0545 hrs on weekdays and Saturdays.
|
135Ang Mo Kio ↺ Siglap Rd 135AAng Mo Kio → Siglap Rd
|
2001
|
16 September
|
Amended to loop at Siglap Rd from Ang Mo Kio Int with the closure of Marine Parade Ter.
|
135AIntroduced from Ang Mo Kio Int to Siglap Rd (Opp Mandarin Gdns), operating after the last bus of Service 135 daily.
|
2002
|
24 March
|
Amended to Ang Mo Kio Temp Int.
|
TBC
|
Serves new pair of bus stops after Sommerville Rd and after Sunshine Lodge along Upp Serangoon Rd.
|
2003
|
16 March
|
Amended to ply Eunos Ave 5 and Eunos Rd 8 with the partial closure of Paya Lebar Rd to facilitate the construction of station on the Circle Line.
|
TBC
|
Serves new bus stop outside Victoria Sch along Marine Parade Rd.
|
TBC
|
Serves new bus stop outside Shell Kiosk along Tg Katong Rd.
|
135Ang Mo Kio ↺ Siglap Rd 135AAng Mo Kio → Marine Parade Rd
|
2005
|
25 April
|
135AExtended to terminate at Marine Parade Rd (Victoria Sch).
|
2007
|
28 April
|
Amended to Ang Mo Kio Integrated Transport Hub.
|
2009
|
23 August
|
Amended to ply the reinstated Paya Lebar Rd, skipping Eunos Ave 5 and Eunos Rd 8.
|
22 November
|
Serves new bus stop opposite MacPherson Stn along Circuit Lk.
|
2011
|
7 March
|
Designated wheelchair-accessible bus service (WAB).
|
26 June
|
Amended to ply Lor Bengkok with the closure of Circuit Lk to facilitate the construction of station on the Downtown Line.
|
2016
|
16 October
|
Amended to ply the reinstated Circuit Lk, skipping Lor Bengkok.
|
2017
|
12 March
|
Amended to ply Upp Serangoon Rd and the diverted Upp Aljunied Rd.
|
2018
|
23 September
|
Amended to ply ECP and Bedok Sth Ave 1 with the partial closure of Siglap Lk to facilitate the construction of on the Thomson–East Coast Line.
|
2020
|
22 March
|
Amended to ply the reinstated Siglap Lk, skipping ECP and Bedok Sth Ave 1.
|
Ang Mo Kio ↔ Jln Kembangan
|
2021
|
28 February
|
Amended to terminate at Jln Kembangan (Kembangan Stn) via Telok Kurau Rd, East Coast Rd and Frankel Ave and converted to bi-directional service, skipping Siglap Rd and a portion of Marine Parade Rd.
|
135ADiscontinued with the amendment of Service 135 to Jln Kembangan (Kembangan Stn).
|
2025
|
13 April
|
Amended to ply Haig Rd and Dunman Rd, skipping a section of Tg Katong Rd.
|