Lusoponte will shut down southbound traffic on the Ponte 25 de Abril for two hours this Sunday morning, May 31, as part of a cycling festival marking the structure's 60th anniversary.
Why This Matters
• Complete closure of the Almada-to-Lisboa direction from 8:30 AM to 10:30 AM on May 31, forcing drivers to reroute via Ponte Vasco da Gama or ferry services.
• One lane closed in the Lisboa-to-Almada direction from 8:00 AM to 10:30 AM, potentially causing delays for early travelers.
• Historic cycling event celebrating the bridge's diamond anniversary through a non-competitive bike tour.
• Alternative routes available: Ponte Vasco da Gama remains open; Transtejo/Soflusa ferries offer additional river crossings.
Commemorative Bike Tour Takes Over Bridge
The bridge concession operator confirmed that the Pedala Portugal Bike Tour will use the bridge for the morning of May 31, creating a significant traffic disruption for a recreational event tied to the structure's 60th anniversary. The southbound direction will be entirely closed to motor vehicles between 8:30 AM and 10:30 AM, while northbound traffic will lose one lane starting at 8:00 AM.
Opened on August 6, 1966, the Ponte 25 de Abril typically handles substantial daily traffic volumes, making it one of the most critical arteries in the Portugal transport network. The Sunday morning slot was deliberately chosen to minimize impact, as traffic volumes are lower on weekends.
Infraestruturas de Portugal (IP), the state entity managing the bridge, has coordinated a commemoration program tied to the bridge's 60th anniversary. The cycling tour represents a key element of this campaign, celebrating Portuguese engineering heritage.
Event Details
The Pedala Portugal organizers have designed a non-competitive route connecting cities in the Lisbon area, with the main tour departing from Almada and a shorter option available for Lisboa residents. Both groups will traverse Avenida da Índia and proceed along the riverside areas as part of the event.
The event is scheduled as a one-time exception to commemorate the bridge's milestone anniversary. Lusoponte has emphasized that such cycling events would not become a regular occurrence, preserving the bridge's primary function as a high-capacity vehicular corridor.
What This Means for Drivers
Motorists planning to cross the Tagus estuary on Sunday morning face a straightforward choice: delay departure until after 10:30 AM, or divert to alternative crossings. The Ponte Vasco da Gama, located approximately 10 kilometers east, remains fully operational and can absorb additional traffic. Transtejo and Soflusa ferry services connect multiple Margem Sul terminals to central Lisboa, offering an alternative.
Because the closure occurs on a Sunday morning with a two-hour window, disruption is expected to be minimal. Lusoponte has advised drivers to monitor real-time traffic updates via its official channels and to plan routes in advance.
Porto Edition Scheduled for June
A second Pedala Portugal tour will take place in northern Portugal on June 21. That route will involve the historic Ponte D. Luís I—a double-deck metal arch bridge inaugurated in 1886—and will not require a full bridge closure, as the lower deck already accommodates vehicles.
The inclusion of two landmark bridges underscores the organizers' intent to highlight Portugal's engineering heritage while promoting cycling culture. Both structures rank among the country's most photographed landmarks and carry deep cultural significance.
Impact on Residents and Visitors
For residents of Almada and other Margem Sul municipalities, the closure represents a minor inconvenience offset by the symbolic value of opening the bridge to non-motorized traffic. Many locals have expressed enthusiasm about the rare opportunity to experience the deck from a cyclist's perspective.
Visitors to Lisboa should note that areas along the cycling route may see increased activity as the event takes place.
The Infraestruturas de Portugal anniversary program will continue through August, with additional events and exhibitions to be announced in the coming weeks. The bridge itself remains a critical piece of infrastructure, carrying road traffic and lower-deck rail services that link the Margem Sul to Lisboa's urban network.
