TVC is proud to have played a key role in the successful completion of the A465 Sections 5 and 6—a project widely regarded as one of the most technically challenging infrastructure undertakings in the UK.

Spanning 11 miles (17.7 km) between Dowlais Top and Hirwaun, this section of the A465 has been transformed into a 70mph dual carriageway with six new junctions, replacing the outdated 3-lane single carriageway. The upgrade is part of a wider £2 billion commitment to enhance 40km of the A465 corridor.

Working in the rugged terrain and unpredictable climate of the region was no small feat—our team often joked that you could experience all four seasons in a single day! But through determination and adaptability, we delivered.

The project also included:

• New side roads and active travel routes
• Multiple bridges, retaining walls, and culverts
• Infrastructure designed to support both connectivity and sustainability.

We’re incredibly proud of our team’s contribution to this landmark project, which will improve travel, safety, and economic opportunity across South Wales for generations to come

To learn more about this project please view the project page.