# Spain AP-4 highway third lane extension

> Live situation record from CLSTR: https://clstr.news/situations/spain-ap-4-highway-third-lane-extension
> Updated: 2026-08-06T04:01:01.000Z. Sources: 21. Developments: 3.

In late July 2026, business groups and local officials in Andalusia renewed pressure on the Spanish government to complete a third lane on the AP‑4 motorway between Seville and Cádiz. On 21 July, the Confederation of Employers of Cádiz condemned the absence of a construction timetable and demanded that the lane be extended to Jerez and Cádiz, citing severe congestion, traffic jams of up to 26 km, and a 50 % rise in daily traffic since the toll was lifted.

Two days later, on 23 July, the central government announced a formal review of a full‑length extension. A provisional technical approval and environmental impact study were issued for a 34.4‑km segment, and the project entered a public information phase for comments from administrations, businesses and private parties.

On 6 August, regional transport councilor Mario Muñoz‑Atanet sent an urgent letter to Transport Minister Oscar Puente requesting a meeting to discuss provisional measures. Acknowledging that design, approval and construction could take years, he proposed short‑term actions such as widening shoulders and the median to alleviate the current collapse of the highway. The councilor offered full institutional collaboration, underscoring continued regional pressure while the extension remains under technical review.

## Claims

- Mario Muñoz-Atanet sent a letter to Oscar Puente requesting an urgent meeting. (corroborated by 3 sources)
- The meeting aims to discuss provisional measures to improve traffic on the AP-4 highway. (corroborated by 3 sources)
- The AP-4 is a strategic highway for Andalusia and Spain, currently experiencing severe congestion affecting thousands of citizens. (corroborated by 3 sources)
- The drafting, approval and construction of the AP-4 expansion project may take years. (corroborated by 3 sources)
- Muñoz-Atanet proposes widening the shoulders and median of the AP-4 as short‑term solutions. (corroborated by 3 sources)
- Muñoz-Atanet offers full institutional collaboration to address the AP-4's collapse situation. (corroborated by 3 sources)

## Timeline

### 2026-08-06: Spain's Transport Minister Oscar Puente called to address AP-4 traffic congestion

Transport councilor Mario Muñoz-Atanet urged minister Oscar Puente to meet urgently on provisional steps to ease severe AP-4 traffic jams in Andalusia, while the long‑term expansion may take years.

9 sources. https://clstr.news/cluster/spains-transport-minister-oscar-puente-called-to-address-ap-4-traffic-congestion

### 2026-07-23: Spain studies extending AP-4 highway third lane to Cádiz

Spain is reviewing an extension of the AP-4 motorway’s third lane to Cádiz, with a €246.8 million plan for a 34.4 km segment now open for public comment amid regional complaints over post‑toll traffic.

5 sources. https://clstr.news/cluster/spain-studies-extending-ap-4-highway-third-lane-to-cdiz

### 2026-07-21: Spain's AP-4 highway delay sparks calls to extend third lane to Cádiz

Spanish employers, regional officials and Jerez's mayor demand the AP‑4 third lane be fast‑tracked and extended to Cádiz amid chronic congestion and claims of discrimination.

12 sources. https://clstr.news/cluster/dominican-republic-expands-solarled-highway-lighting-to-over-200-km

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Cite as: Spain AP-4 highway third lane extension. CLSTR, https://clstr.news/situations/spain-ap-4-highway-third-lane-extension