Project Summary
Coffey was appointed as Main Contractor for the refurbishment of the M9 River Avon Bridge near Linlithgow, West Lothian. The works involved concrete and drainage repairs, bridge waterproofing, new expansion joints, and resurfacing, delivered under live motorway traffic conditions using tidal contra-flow management.
Project Description
The project required extensive refurbishment of the M9 River Avon Bridge. Key works included replacement of expansion joints, hydro-demolition and repair of damaged concrete, drainage improvements, bridge waterproofing, new road restraint systems, precast kerbing, resurfacing, and road markings.
Drainage improvements involved filling existing gullies and constructing 40 new gullies offset from the carriageway. Concrete repairs were undertaken using hydro-demolition to expose reinforcement before reinstatement. Spray-applied waterproofing was completed with an SA1030 bond coat.
The overall works site extended for approximately 1,000 metres, with two temporary crossovers and a tidal contra-flow traffic management system to minimise disruption.
Scope of Works
The works included:
- Traffic management including tidal contra-flow and temporary crossovers.
- Hydro-demolition and repair of damaged bridge deck concrete.
- Replacement of expansion joints in compliance with BB33/94.
- Spray-applied bridge deck waterproofing and bond coat.
- Drainage repairs and construction of 40 new gullies.
- Installation of a new road restraint system and precast concrete kerbing.
- Resurfacing, road markings and studs.
Technical Highlights
- Complex motorway works completed within the original 7-week programme despite additional instructed works.
- Effective use of hydro-demolition for high-quality and durable concrete repairs.
- Smooth approval and implementation of traffic management designs in collaboration with Transport Scotland.
Added Value
- Project delivered on time despite significant additional scope.
- Positive working relationship with client design team through regular liaison.
- Proactive coordination with subcontractors ensured seamless delivery of specialist works.
Environmental, Safety or Community Measures
- Advance notice provided through variable message signs to inform motorists.
- Traffic disruption minimised using contra-flow and phased traffic management.
- Safe working environment maintained through close management of subcontractors and strict compliance with contract requirements.
To learn more about Coffey’s work in active travel and urban infrastructure, or to discuss future opportunities, please contact us at 091 844356 or info@coffeygroup.com.
