From the archives: Construction of Saudi Arabia's Riyadh Metro
Check out how Riyadh Metro's construction programme has grown since ground was broken on the billion-dollar megaproject four years ago in April 2014
This month marks four years since ground construction began on Saudi Arabia's Riyadh Metro.
Pre-construction activities began in 2012, and ground was broken on the billion-dollar megaproject on 3 April, 2014.
Six metro lines, named Blue, Red, Orange, Yellow, Green, and Purple are being developed as part of the project, which is worth approximately $23bn (SAR86.3bn).
The lines are respectively 38km, 25.3km, 40.7km, 29.6km, 12.9km, and 30km long.
A total of 85 stations will be developed for the metro network, and the facilities will use solar technology to save around 20% of the power required for air-conditioning and lighting, according to Arriyadh Development Authority (ADA), the agency tasked with Riyadh Metro's development.
As the team behind the one of the Gulf's largest transport hubs powers through with its construction programme, check out ConstructionWeekOnline's archives to revisit the historic project's development progress over the years.
NEXT PAGE: The beginning (2012)
The beginning (2012)
NEXT PAGE: Taking shape (2013)
Taking shape (2013)
NEXT PAGE: Laying base (2014)
Laying base (2014)
Saudi Electricity signs $682.5mn Riyadh metro deal
ACTS wins geotechnical contract on Riyadh Metro
Lloyd's Register made Riyadh Metro safety assessor
Riyadh Metro construction 'will be a challenge'
Train design unveiled for $22.5bn Riyadh Metro
NEXT PAGE: Paving the way (2015)
Paving the way (2015)
L&T wins $161m deal for Saudi's Riyadh Metro lines
Alstom begins train production for Riyadh Metro
NEXT PAGE: Teeming with teams (2016)
Teeming with teams (2016)
Pfaff-silberblau signs Riyadh Metro lifting deal
Contract awarded for Riyadh Metro lines 1 and 2
NEXT PAGE: Tangible progress (2017)
Tangible progress (2017)
Otis wins 445-unit deal for Saudi Arabia's Riyadh Metro
NEXT PAGE: Latest updates (2018)
Latest updates (2018)