The new Riyadh-Jeddah single track line will be approximately 950 km long. Proposed conjunction for this line is from a point about 30 km from Riyadh on the old line (in order to avoid built up areas). It will then head towards the Riyadh-Jeddah expressway and run, for a greater part, parallel to it until Al Muwayh al Jadid. From this point onwards it will pass north of Makkah and Taif.

This line, in conjunction with the existing Riyadh-Dammam line, will be primarily used for the transport of container traffic to and from the port of Jeddah to the Port of Dammam in the Arabian Gulf for further shipment to and from the UAE, Iran, Kuwait, etc. (i.e. a land-bridge) and for inland destinations (i.e. a mini-bridge). The line will also be used to transport passengers between Jeddah and Riyadh.