# Ayer Rajah Expressway

The Ayer Rajah Expressway (AYE) extends from the western end of the Marina Coastal Expressway (MCE) in the south of Singapore to Tuas in the west near the Tuas Second Link to Malaysia. Together with the MCE and the East Coast Parkway (ECP), it forms a second east-west link to complement the role played by the Pan Island Expressway (PIE).

## History

Construction on the expressway commenced in 1983, with the first two phases completed by 1988. This section involved the widening of several existing roads along the way, such as Ayer Rajah Road and Upper Ayer Rajah Road, as well as the construction of what was then the longest road viaduct, the Keppel Viaduct, from where the eastern end of the expressway commences. The road extends from Alexandra Road until Keppel Road. It ends at Teban Flyover along Jurong Town Hall Road.
With the construction beginning from 5 December 1993, the existing Jalan Ahmad Ibrahim from Tuas West Drive to Jurong Town Hall Road was widened and merged into Ayer Rajah Expressway which was opened on 18 November 1997. The expressway was extended to Tuas from Teban Flyover in conjunction with the opening of the Tuas Second Link to Johor on 2 January 1998. This construction, which followed the alignment of Jalan Ahmad Ibrahim, involved the expansion of the existing road to match with the width of the rest of the AYE, construction of "filter" roads on both sides of the expressway (which eventually took the name of Jalan Ahmad Ibrahim), and the building of five flyovers and two underpasses. It meets up with the PIE at the Tuas Flyover.
The eastern terminus of the AYE used to continue onto the western terminus of the East Coast Parkway (ECP). After the MCE was opened on 29 December 2013, the ECP was truncated and the MCE had taken over parts of the route, which connects AYE to the Kallang–Paya Lebar Expressway (KPE) and ECP.

## Proposed realignment

During the 2014 Singapore National Day rally, Prime Minister Lee Hsien Loong spoke of the possibility of realigning the stretch of the AYE near Jurong Lake Gardens south to allow for more space to build housing in the area. Government agencies later further explained that such a move would "integrate the Pandan Reservoir area with Jurong Lake District to form a larger and more cohesive development area".
National Development Minister Desmond Lee gave an update on this proposed realignment on 30 June 2024, sharing that "agencies are currently studying various options, including how we can make it easier for residents to move between Teban Gardens and Jurong Lake District", with more information to be made available when ready.

## Gallery

* Local bus heading west on Ayer Rajah Rd - 1945
* The Clementi section of the Ayer Rajah Expressway
* Another view
* Keppel Road
* A video taken from a car travelling west in the direction of Tuas, and exiting at Exit 9 (Clementi Road)

## List of interchanges and exits

| Location | km | mi | Flyover | Exit | Destinations | Notes |
| Outram | 0.0 | 0.0 | Keppel Viaduct | — | MCE (towards ECP/KPE) | Eastern terminus, expressway continues as MCE |
| Bukit Merah | 1.7 | 1.1 | Keppel Flyover | 2A | West Coast Highway Telok Blangah Road | Westbound Exit and entrance only |
| Bukit Merah | 2.3 | 1.4 | — | 2B | Keppel Road | Eastbound exit only |
| Bukit Merah | 2.9 | 1.8 | Radin Mas Flyover | 2C | CTE (towards SLE) | Eastbound exit and westbound entrance only |
| Bukit Merah | 3 | 1.9 | Lower Delta Flyover | 3 | Lower Delta Road Jalan Bukit Merah Telok Blangah Road | Eastbound exit and westbound entrance only |
| Queenstown | 6 | 3.7 | Gillman Flyover | 6 | Alexandra Road | Eastbound exit and westbound entrance only |
| Queenstown | 6.5 | 4.0 | Portsdown Flyover | 7A | Normanton Park Science Park Drive Portsdown Avenue one-north Avenue Queensway | |
| Queenstown | 7.1 | 4.4 | Portsdown Flyover | 7B | Normanton Park Science Park Drive Portsdown Avenue one-north Avenue Queensway | |
| Queenstown | 7.7 | 4.8 | Buona Vista Flyover | 8 | South Buona Vista Road North Buona Vista Road | |
| Queenstown | 9.7 | 6.0 | University Flyover | 9 | Clementi Road | |
| Clementi | 10.3 | 6.4 | Clementi Flyover | 10A | Clementi Avenue 2 (southbound) West Coast Road | Westbound exit and entrance only |
| Clementi | 10.7 | 6.6 | Clementi Flyover | 10B | Clementi Avenue 2 (northbound) | Eastbound exit and entrance only |
| Clementi | 11.4 | 7.1 | Pandan Flyover | 11 | Clementi Avenue 6 PIE (both bounds) West Coast Way | Access to West Coast Way from only westbound exit |
| Jurong East | 13.4 | 8.3 | Teban Flyover | 13 | Jurong Town Hall Road | |
| Jurong East | 14.4 | 8.9 | — | 14 | Jalan Ahmad Ibrahim Penjuru Road | Westbound exit and entrance only |
| Jurong East | 15.6 | 9.7 | Corporation Flyover | 15A | Jalan Terusan Corporation Road Jurong Port Road | Westbound exit and entrance only |
| Jurong West | 16.1 | 10.0 | — | 15B | Yuan Ching Road | Eastbound exit and entrance only |
| Boon Lay | 16.8 | 10.4 | — | 17 | Jalan Boon Lay Jurong Pier Road Jurong Island | Access via Westbound exit |
| Boon Lay | 18.2 | 11.3 | Jurong Hill Flyover | 17 | Jurong Pier Road Jalan Boon Lay Jurong Port Road Corporation Road | Access via Eastbound exit |
| Boon Lay | 18.6 | 11.6 | Pioneer Flyover | 18 | Pioneer Road North Pioneer Road Benoi Sector | Access via Westbound exit |
| Pioneer | 19.7 | 12.2 | Pioneer Flyover | 18 | First Lok Yang Road Pioneer Road Pioneer Road North | Access via Eastbound exit |
| Pioneer | 20.4 | 12.7 | Benoi Flyover | 20 | Benoi Road Gul Way | Access via Westbound exit |
| Pioneer | 21.5 | 13.4 | Benoi Flyover | 20 | Benoi Road | Access via Eastbound exit |
| Pioneer | 22.2 | 13.8 | Tuas Flyover | 22 | PIE (towards Changi) Tuas Road Tuas Port | Access via Westbound exit |
| Tuas | 23.4 | 14.5 | Tuas Flyover | 22 | PIE (towards Changi) Jalan Ahmad Ibrahim | Access via Eastbound exit |
| Tuas | 24 | 15 | Tuas West Underpass | 24 | Tuas Avenue 8 Tuas West Road | Access via Westbound exit |
| Tuas | 25.7 | 16.0 | Tuas West Underpass | 26A | Tuas West Road | Access via Eastbound exit |
| Tuas | 26.7 | 16.6 | Tuas Checkpoint Viaduct | — | Second Link | Western terminus, expressway continues as Second Link via Tuas Checkpoint |
| 1.000 mi = 1.609 km; 1.000 km = 0.621 mi Incomplete access Route transition |||||||