Túnel do Grilo lane restrictions begin on Monday for 60 days
Lighting work in the IC17/CRIL tunnel begins on 19 October, reducing normal daytime capacity and requiring additional lane closures overnight.
Archived after its publication day. Search retains this original briefing for background and accountability.
Archived 12 September 2026Drivers should allow extra time and follow the signed lanes. The published arrangement keeps traffic moving but may reduce each gallery from four lanes to two, and sometimes one at night.
- The work is scheduled to start on 19 October and last about 60 days.
- Two lanes per gallery are planned with a 50 km/h limit during the works.
- Between 22:00 and 06:00, further closures can reduce circulation to one lane.
Lighting work changes tunnel capacity
Infraestruturas de Portugal is replacing lighting inside the galleries and near the tunnel portals. The work zone will be signed, and the reduced speed and lane layout apply for safety while crews and equipment occupy the site.
The 60-day period is an expected duration, not a promise that every night will have the same arrangement. Weather and operational needs can change the active lane pattern.
Check conditions before an important journey
Use live traffic information before setting out, particularly for airport, hospital or timed connections. A route that is usually predictable may need a larger margin during overnight closures.
Do not change lanes late at the portal or stop in the tunnel to check directions. Follow signs and emergency instructions even when a navigation app suggests a faster line.
What you can do now.
- 01
Allow extra time from 19 October.
- 02
Check live traffic before a timed journey.
- 03
Observe the temporary 50 km/h limit and signed lane layout.
Have a place we should experience?
Invite the Hub for a hosted visit, propose a story, plan a clearly labelled campaign or apply for a business profile.