Cell towers in Saint-Brieuc (Côtes-d'Armor)

1 water tower and 7 buildings, 7 pylons and 1 church or religious building carry the commune's antennas.

Declared locations include La Croix St Lambert, 115 boulevard de l'Atlantique, 67 rue Théodore Ribot, 4 Rue du Combat des Trente, 3 rue Ampere/rue Leverrier and 2 Avenue Louis Aragon.

13 systems were switched on in the past 12 months. ANFR has approved one new site that is not live yet, plus additions on 3 existing masts. New: Bouygues Telecom (3G, 4G and 5G, including 5G at 3.5 GHz) at rue de la Ville Guyomard and SFR (2G, 3G, 4G and 5G, including 5G at 3.5 GHz) at rue de la Ville Guyomard. 11 Bouygues Telecom 5G transmitters are listed as technically operational — installed, but not yet declared commercially in service.

The highest support stands 56 m at 13 rue de St-Malo (building). The median is 29 m, slightly below the Côtes-d'Armor median of 34 m.

2018 was the busiest year, with 52 new systems, most of them 4G. Free Mobile switched on the first 5G here in March 2021; SFR followed in January 2022, Bouygues Telecom followed in February 2022. The oldest transmitter still listed here goes back to 1998.

Of the 16 masts in the commune, 2 masts carry all four networks, and Orange is the only carrier on 5 masts.

By mast count, Saint-Brieuc is 3rd of the 30 Côtes-d'Armor towns that have five or more. With 16 masts for 44,364 residents, or 4 per 10,000, it has fewer masts per inhabitant than the median for those towns (13).

3.5 GHz 5G is declared by Orange on all 11 masts, Bouygues Telecom on 5 of its 6 masts, Free Mobile on 5 of its 7 masts and SFR on 5 of its 6 masts. 100% of the town's masts carry 5G, more than across Côtes-d'Armor towns with five or more masts (86%).

2.2 km to the north, neighbouring Plerin has only 10 masts.

Supports leave a gap of about 1.5 km to the east of the centre.

Source: operator declarations to ANFR, as of October 2026. Projects that are only approved are left out of the totals.