The highways specialist will ship 5 design and construct packages throughout the A38 hall below a contract with North Somerset Council.
The broader scheme covers 9 places between Barrow Tanks and the M5 J22 Edithmead Roundabout, aiming to spice up journey reliability, security and lively journey hyperlinks.
Works embody new cycle and strolling routes, upgraded crossings and junction enhancements.
Somerset Council will appoint its personal contractor for the 4 websites south of Sidcot.
Octavius highways operations director Chris Hudson stated the agency would work carefully with native stakeholders to minimise disruption and maximise group advantages throughout supply.