# Asturias-Aucalsa highway toll and safety dispute

> Live situation record from CLSTR: https://clstr.news/situations/asturias-aucalsa-highway-toll-dispute
> Updated: 2026-08-23T03:00:00.000Z. Sources: 5. Developments: 3.

The regional government of Asturias has initiated disciplinary proceedings against Aucalsa, the concessionaire of the AP-66 highway, seeking fines totaling approximately €1.1 million. The penalties consist of €1 million for failure to provide full service and €100,000 for deficient signage during road works that affect nearly 40 percent of the route. Additionally, Asturias has filed a Supreme Court challenge to nullify the 2000 decision extending the highway concession until 2050.

A jurisdictional dispute has emerged following the Spanish Ministry of Transport and Sustainable Mobility’s request to join the proceedings as an interested party. Beatriz González Prieto, Vice-Counselor for Citizen Rights, questioned whether the Ministry’s intervention aims to protect citizens or the private concessionaire. The Asturian Consumer Service is evaluating the legal validity of this intervention.

The conflict intensified following a concrete slab collapse in the Negrón tunnel, which forced a total highway closure and diverted traffic through the Pajares pass. Asturias President Adrián Barbón argued the incident demonstrates the road is not in adequate condition to justify current tolls, which cost passenger vehicles €16.20 for the full route from Campomanes to León. He also noted that maintenance and construction works are reportedly over a year behind schedule. The Ministry of Transport defended its response, stating the road was reopened in “record time” and that structural experts will evaluate the site, suggesting the collapse was a “normal occurrence during construction.”

## Timeline

### 2026-08-23: Asturias and Spanish government clash over AP-66 highway safety and tolls

A tunnel collapse on the AP-66 highway has intensified a dispute between Asturias and the Spanish government over road safety, construction delays, and the continued collection of tolls.

2 sources. https://clstr.news/cluster/asturias-and-spanish-government-clash-over-ap-66-highway-safety-and-tolls

### 2026-08-19: Asturias disputes Ministry intervention in Aucalsa toll investigation

The Spanish Ministry of Transport has requested to join a disciplinary case against highway concessionaire Aucalsa, sparking tension with the Asturias regional government over toll disputes on the AP-66.

3 sources. https://clstr.news/cluster/asturias-disputes-ministry-intervention-in-aucalsa-toll-investigation

### 2026-07-26: Asturias transporters face toll fine on highway operator and tax‑driven service cuts

Asturias’ government proposes a €1.1 million fine on Aucalsa over full toll charges, while transporters pause trucks to avoid exceeding the €125k tax‑module limit, stressing regional logistics.

2 sources. https://clstr.news/cluster/asturias-transporters-face-toll-fine-on-highway-operator-and-taxdriven-service-cuts

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Cite as: Asturias-Aucalsa highway toll and safety dispute. CLSTR, https://clstr.news/situations/asturias-aucalsa-highway-toll-dispute