Masjid Jamek LRT station

Opened on 16 December 1996 as part of the first phase of the then STAR system (Phase 1), the Ampang and Sri Petaling Line station was constructed directly above a bridge along Jalan Tun Perak that crosses the Klang River shortly before the Klang River-Gombak River confluence: Its elevated tracks and side platforms are suspended above Jalan Tun Perak, while the ticketing concourses are located over the Klang River, at street level.

The station, similar to surface-level stations from the Chan Sow Lin-Ampang route, has one ticketing concourse for each of the two platforms. The two concourses and their exits are located on both sides of Jalan Tun Perak, and were previously not integrated with each other. The northern concourse and platform is designated for trains bound for either the Ampang and Putra Heights (previously, Sri Petaling station) stations, while the southern concourse and platform are designated for trains bound for the Sentul Timur station at the northern end of the line.

The second Masjid Jamek rapid transit station was opened on 1 June 1999 as part of the second phase of the Kelana Jaya Line (then known as PUTRA LRT) (known as Section 2).

The Kelana Jaya Line station, like other stations along the subway stretch of the Kelana Jaya Line, is an underground rapid transit station that consists of a single island platform (separated from the tracks by platform screen doors) connected to a single ticketing concourse via stairways, escalators and an elevator.

The main entrance of the Kelana Jaya Line station was situated directly north of the Ampang and Sri Petaling Lines station, exiting into Jalan Melaka, and Jalan Melayu via a footbridge over the Klang River. This access has now been converted into the transit plaza and is directly connected with the former concourse for Platform 2 (Ampang- and Putra Heights-bound platform) of the Ampang and Sri Petaling Lines. A secondary access point was located south from the Ampang and Sri Petaling Line station on the other side of Jalan Tun Perak, connected to the station's ticketing concourse via a long tunnel that passes underneath Jalan Tun Perak. The tunnel has since been converted into the paid or restricted area connection for transfers between the Kelana Jaya Line and Platform 1 (Sentul Timur-bound platform) of the Ampang and Sri Petaling Lines. As such, the former exit at the end of the tunnel to Jalan Benteng has been closed. (see below)

Despite the proximity of the Masjid Jamek Ampang and Sri Petaling Line and Masjid Jamek Kelana Jaya Line stations, they were essentially two separate stations operating independently from each other and which did not provide any transfer convenience to passengers switching from one line to the other. In fact, even passengers on the Ampang Line and Sri Petaling who wanted to change their direction of travel at this station could not do so without exiting the turnstiles at the concourse of one side of Jalan Tun Perak, crossing Jalan Tun Perak, and then buying a new ticket at the concourse on the other side of the road to resume their journey.

When Syarikat Prasarana Negara Berhad took over the ownership of both the Ampang Line and Kelana Jaya Line, the opportunity came to properly integrate the two lines physically and in terms of ticketing systems. In November 2006, construction of a plaza over the Klang River which would eventually create a physical linkage between the Kelana Jaya Line station with the concourse of Platform 2 of the Ampang and Sri Petaling Lines station began. Called Phase 1 of the Integrated Masjid Jamek station project, the works were completed in October 2008 and the plaza was opened to the public on 15 November 2008.[1] However, as the two lines still had two separate ticketing systems, the actual physical linkage could not be opened and both stations still had separate entrances.

Phase 2 of efforts to integrate the two Masjid Jamek stations, which began in April 2010, then saw the physical linking up of the plaza with the concourse for Ampang- and then Sri Petaling-bound trains of the then Ampang Line (Platform 2); the reconfiguration of the entrances, turnstiles and ticketing office of this councourse; and the raising of the floor level of this concourse to be the same level as the plaza. The station was also upgraded to include lifts and ramps to make it accessible to the disabled.

The final steps in the integration process involved the relocation of the turnstiles for the Kelana Jaya Line from Level B1 to the Ground Level Transit Plaza. This essentially converted the entire Level B1 of the Kelana Jaya Line station into a paid area (previously, it was partially paid and unpaid) while part of the Ground Level Plaza became a paid area with the new entrance into the Kelana Jaya Line (as well as the entrance for Ampang- and then Sri Petaling-bound trains of the Ampang Line) being relocated to this level. The underpass which previously allowed passengers to access Jalan Benteng without needed to cross Jalan Tun Perak from the Kelana Jaya concourse Level B1 was converted into a paid area for passengers transferring between the Kelana Jaya Line and the Ampang Line Station Platform 1 (Sentul Timur-bound). As the underpass was now a restricted area, access to and from Jalan Benteng was sealed-off. The Kelana Jaya Line ticketing office on Level B1 was then closed and integrated with what was previously the Ampang Line ticketing office at the Ground Level Plaza.

On 28 November 2011, the integration process was completed and for the first time, passengers from the Kelana Jaya Line could transfer onto the Ampang and Sri Petaling Lines and vice versa without needing to buy new tickets.