The Outer Ring Road System, or more commonly known as ORRS, is a network of major arterial roads in Singapore that forms a ring road through the towns along the city fringe. The ORRS is a semi-expressway, just like the West Coast Highway. Since 1994, roads along the ORRS have been upgraded in stages to provide a smoother route to travel across the island. Roads and interchanges along the ORRS are constantly being upgraded to cater to the ever increasing traffic demand. It starts as Portsdown Avenue in Queenstown and ends as Tampines Avenue 10 in

Tampines Tampines () is the regional centre of the East Region of Singapore. With a population of 265,340 living across its five subzones, it is the second-most populous planning area in Singapore, according to the DOS Population Trends 2022. It is h ...

. The series of roads passes through the areas of Queenstown,

Bukit Timah Bukit Timah, often abbreviated as Bt Timah, is a planning area and residential estate located in the westernmost part of the Central Region of Singapore. Bukit Timah lies roughly from the Central Business District, bordering the Central Wa ...

Central Catchment Nature Reserve The Central Catchment Nature Reserve (; ms, Hutan Simpanan Kawasan Tadahan Air Tengah; ta, மத்திய நீர்ப்பிடிப்பு இயற்கை ரிசர்வ்) is the largest nature reserve in Singapore, occ ...

Bishan Bishan most commonly refers to Bishan, Singapore, a residential town in Singapore's Central Region, and its associated places. Bishan may also refer to: Places Singapore * Bishan, Singapore ** Bishan MRT station, a MRT interchange station along t ...

Toa Payoh Toa Payoh (, ta, தோ பாயோ) is a planning area and matured residential town located in the northern part of the Central Region of Singapore. Toa Payoh planning area borders Bishan and Serangoon to the north, the Central Water Catc ...

Geylang Geylang is a planning area and township located on the eastern fringe of the Central Region of Singapore, bordering Hougang and Toa Payoh in the north, Marine Parade in the south, Bedok in the east, and Kallang in the west. Geylang is perha ...

and

Route

The route of the ORRS forms a semi-circle shape, connecting several expressways and major arterial roads. Travelling from west to east in a clockwise direction, the route begins at Queenstown with a connection to the

Ayer Rajah Expressway The Ayer Rajah Expressway (AYE) extends from the western end of the Marina Coastal Expressway in the south of Singapore to Tuas in the west near the Tuas Second Link to Malaysia. Together with the Marina Coastal Expressway and the East Coast ...

. The route continues northward through the residential areas of

via Farrer Road and Adam Road, with the first connection to the

Pan Island Expressway The Pan Island Expressway (Abbreviated as: PIE) is the oldest and longest expressway in Singapore. It is also Singapore's longest road. The expressway runs from the East Coast Parkway near Changi Airport in the east to Tuas in the west and ha ...

. The route continues east through Bukit Brown,

and

Bartley Bartley is a family name and a given name. Notable people with the name include: Surname * Barrington Bartley (born 1980), Jamaican-American cricketer * Charles Bartley (1921–1996), American scientist * David M. Bartley (born 1935), American po ...

, via the MacRitchie Viaduct and Lornie Viaduct and a connection to the Central Expressway. From here, the route travels eastwards to

Kaki Bukit Kaki Bukit ( Jawi: كاكي بوكيت; ) is a small town in Perlis, Malaysia. It has an estimated population of 3,000. Kaki Bukit is located 26 kilometres (16 miles) north of the state capital, Kangar and a few miles away from Padang Besar, the ...

and

through a series of viaducts.

Benefit

With the ORRS, traffic volume on city-bound roads will be reduced. It also provides an alternative route east-west travel for motorists without going through the city. Since ORRS is extensively linked to

expressways Expressway may refer to: *Controlled-access highway, the highest-grade type of highway with access ramps, lane markings, etc., for high-speed traffic. *Limited-access road, a lower grade of highway or arterial road. *Expressway, the fictional slide ...

and other arterial roads, such as

Bukit Timah Road Bukit Timah Road (; ms, Jalan Bukit Timah; ta, புக்கித் திமா சாலை) is a major road in Singapore extending from the city centre to Woodlands Road on the way to Johor Bahru in Malaysia. The road has a length of 25& ...

, motorists can get from one traffic route to another easily.

Upgrading projects

The first upgrading project started in 1994, with two intersections along Farrer Road being the first to be upgraded. The upgrading projects had to be carried out in stages to minimise disruption to traffic. The completion of the Portsdown Flyover, Queensway Flyover and Queensway Underpass marks another milestone in the realisation of the ORRS. The Farrer Road section of the upgrading project completed in 2009.

Interchange along ORRS

: Only

arterial roads An arterial road or arterial thoroughfare is a high-capacity urban road that sits below freeways/motorways on the road hierarchy in terms of traffic flow and speed. The primary function of an arterial road is to deliver traffic from collector roa ...

and major roads will be mentioned. Minor roads will not be mentioned.

References

Outer Ring Road System (ORRS)

Opening Of Extension Of Queensway To The AYE And Queensway/Commonwealth Avenue Interchange

* ttp://www.channelnewsasia.com/stories/singaporelocalnews/view/336291/1/.html Braddell Road/Thomson Road/Lornie Road Flyover to open in July {{Expressways of Singapore Roads in Singapore Ring roads

Route

Benefit

Upgrading projects

Interchange along ORRS

See also

References