Tunnel and 4 Flyovers at Thumamah–Othman Bin Affan Intersection

The Royal Commission for Riyadh City (RCRC) has announced the start of construction on a new tunnel and flyover at the intersection of Al Thumamah Road and Othman Bin Affan Road. The project comprises an 850-meter tunnel along Al Thumamah Road and four flyovers with a total length of approximately 2,000 meters. Works are set to commence on Wednesday, April 16, 2026. The project is part of Riyadh Main and Ring Road Axes Development Program, and aims to ease traffic movement and strengthen connectivity along two of Riyadh’s major arterial corridors.

RCRC stated that these projects represent a continuation of its ongoing efforts to modernize infrastructure and strengthen the efficiency and sustainability of the road network in line with Riyadh’s accelerating urban expansion. In coordination with the relevant authorities, an integrated traffic management plan has been implemented to manage traffic diversions during the construction phase. Digital mapping systems and navigation applications have also been updated to help ensure seamless traffic flow.

Click here for more details about the Thumamah–Othman Bin Affan Roads Intersection Development Project and the announced traffic detours.