The South Luzon Tollway Extension Project consist of the rehabilitation and expansion of the existing toll road from Alabang to Calamba (28.53 km.) and the construction of the extension of the SLEX to Sto. Tomas, Batangas (5.81 km.) with the associated spur to the Southern Tagalog Arterial Road (1.79 km.).
The project consists of three (3) phases:
1. Project Toll Road 1 – entail the repair and widening of the 1.2 kilometer Alabang Viaduct to improve the volume capacity, riding quality and structural integrity of the superstructure and to replace the bridgedeck from the current 6-lanes, to a new 8-lane bridgeway.
2. Project Toll Road 2 – consists of the rehabilitation and widening of the existing 15-kilometer expressway from Filinvest to Sta. Rosa in Laguna from the existing 4 lanes to an 8-lane expressway and the rehabilitation and widening of the existing 12 kilometer expressway from Sta. Rosa to Calamba from the existing 4 lanes to a 6-lane expressway.
3. Project Toll Road 3 – is a new 7.6 kilometer, 4-lane expressway from Calamba to Sto. Tomas in Batangas. TR3 will also link SLEX to the Southern Tagalog Arterial Road (STAR), which presently leads to Lipa City and is being extended to Batangas City.
4. Project Toll Road 4 – A new four (4)-lane toll road from Sto. Tomas, Batangas to Tayabas/Lucena City in Quezon, 66.74 km. long.
Php 21.600. Billion (Php 8,5 Billion [Toll Roads 1-3] and 13.1 Billion [Toll Road 4 )
Supplemental Toll Operation Agreement
South Luzon Tollway Corporation (SLTC)
Toll Roads 1-3: Operational
Toll Road 4: Under construction (based on workable areas)
Package TR4A: 1.49%
Package TR4B: 21.30%
Package TR4C: 35.31%
Ongoing ROW acquisition by the DPWH