Overview
- Crews closed one lane in each direction on Calle Alcalá on Monday, a reduction city officials say will remain after construction.
- The final layout provides two general lanes plus a bus lane per direction, a 3.8‑metre central promenade, wider sidewalks and a segregated south-side bike lane.
- UNESCO and local heritage bodies endorsed the project, which seeks to restore the historic street alignment and improve access to the Puerta de Alcalá.
- City hall budgets €6.1 million and targets completion in the first quarter of 2027, concentrating the heaviest traffic disruptions in summer.
- A municipal mobility study forecasts limited overall impact on traffic despite the permanent lane reduction.