Driving at night in Panama City is already complicated, but navigating the roads will become even worse now due to these upcoming partial lane closures.
Geotechnical drilling tied to the Cuarto Puente construction will force partial lane closures on the Pan-American Highway starting Wednesday, September 16, according to Panama’s Ministry of Public Works (MOP). The overnight work runs through Monday, September 21, from 9:00 p.m. to 4:00 a.m. daily.
The affected stretch sits in the westbound lanes heading toward Panama City, specifically between the Puma station and the access road to the Bridge of the Americas in Ancón. Traffic authorities have already issued the necessary permits for the operation.

Cuarto Puente Construction Drives Overnight Traffic Restrictions
The MOP confirmed the closures are part of the larger “Design and Construction of the Fourth Bridge over the Panama Canal” project. Crews will conduct soil testing along the corridor, a critical step before advancing structural work on the crossing.
Drivers should expect single-lane closures rather than full road shutdowns. The Land Transit and Transportation Authority (ATTT) approved the work schedule, which avoids peak daytime hours to minimize disruption.

Traffic Control and Safety Measures in Ancón
National Police units and flaggers will direct vehicles through the work zone. The MOP has installed preventive signage and asked motorists to reduce speed when approaching the area.
“We apologize for the temporary inconvenience,” the ministry said in a statement, urging drivers to follow instructions from authorized personnel on site.

Project Timeline and Regional Impact
The Fourth Bridge project represents one of Panama’s most significant infrastructure investments in recent years. Once completed, the structure will provide a new crossing over the canal and ease congestion on the existing Bridge of the Americas.
Geotechnical surveys like the one starting this week inform foundation design and soil stability calculations. The results will guide engineering decisions for the bridge’s support structures.
Commuters traveling toward the capital during overnight hours should plan for minor delays. The MOP recommends using alternate routes where possible, though no detours have been formally announced for this phase of work.

