Porto Metro's Linha Rubi Walks Out of the PRR Today as Castro Almeida Confirms a 22-Month Slip — €352 Million Project Now Funded From Fundo Ambiental and the State Budget

Economy and Cohesion Minister Castro Almeida confirmed on 7 May that Porto Metro's Linha Rubi — the new Casa da Música to Santo Ovídio crossing under the Douro — is being removed from the Recuperação e Resiliência envelope and will instead be funded from the Fundo Ambiental, the State Budget and (if available) the Sustentável 2030 programme. The decision lands four months before the PRR's hard 31 August 2026 expenditure deadline.

The 22-month deadline gap

The line's full mechanical and civil works are now scheduled for completion on 22 July 2028 — almost two years past the PRR window. Internal IP / Metro do Porto sequencing puts the Porto-side tunnel finish at March 2027, the Gaia-side tunnel at April 2027, and the new Douro bridge — Ponte D. Antónia Ferreira — at April 2028. Dynamic testing begins May 2028, pre-operation June 2028. With those dates locked, the August-2026 PRR endpoint is mechanically unreachable, and the only way to preserve the project on its current schedule is to take it out of the EU envelope and reassign the funding line.

What had been allocated

The PRR had earmarked €351.99 million for the Linha Rubi corridor, of which €130.86 million has already been disbursed — predominantly on civil works contracts already in progress on the Casa da Música and Santo Ovídio approaches and on the Douro-bridge advance procurement. Castro Almeida's statement confirms that the disbursed €130.86 million remains within scope; only the residual €221 million of unspent envelope is being reallocated.

The route — 6.4 kilometres, 8 stations

Linha Rubi runs 6.4 kilometres from Casa da Música in central Porto south across the Douro to Santo Ovídio in Vila Nova de Gaia, with eight intermediate stations and the new Ponte D. Antónia Ferreira as the river crossing. It is the first Porto Metro extension into Gaia south of the existing Linha Amarela terminus and is the structural backbone of Metro do Porto's 2030 expansion plan.

The replacement funding stack

The Ministry of Economy and Cohesion will substitute the PRR envelope with three sources: the Fundo Ambiental (the State's environmental investment fund, used for the Lisbon Metro's Linha Rubi-equivalent expansion in 2024), the OE2026 capital budget for Metro do Porto, and — pending European Commission approval — the next-cycle Sustentável 2030 programme. Castro Almeida's quoted statement: "Not being possible to complete the Ruby Line expansion within the PRR timeframe, the project will exit the Plan's scope."

What it means for porto residents

For Porto and Gaia residents, the practical message is unchanged: the new Douro crossing and Casa da Música-to-Santo Ovídio service will arrive in mid-2028, with the bridge completion in April 2028 the gating event. The funding swap means no change to project timeline and no risk of works pause. For PRR-watchers, this is the second high-visibility metro project to step out of the envelope this year — after Lisboa Metro's Linha Vermelha airport-extension reshuffle in February — and reinforces the broader pattern flagged by Brussels last week, where Portugal has completed 16% of its 84 reform measures and is increasingly using non-PRR national-fund routes for infrastructure that won't hit the 2026 deadline.

Sources: Ministry of Economy and Cohesion statement (7 May 2026); ECO; Metro do Porto.