– Embedded barrier over structures
– Cost-efficient foundation options
– Permanent access to bridge joints
– Low maintenance requirements
– Bridge spans less than 30m
Concrete barrier embedded within an asphalt cradle at structures is an innovative concept to reduce overall construction costs and alleviate the need for the concrete foundation of a concrete barrier system across a bridge deck.
Embedded CB at Structures has been enhanced to allow construction and maintenance teams access to bridge joints, where previously concrete barrier would be placed permanently across. This provides a low maintenance and cost efficient solution for bridges as the removable SB expansion joints give essential access to bridge joints where under previous circumstances the barrier would be broken out and replaced during the bridge maintenance schedule.
As Technical Construction File: Issue 6 highlights, the SB expansion joints can accommodate up to 100mm of movement and the concrete barrier element across the span can be reduced to 12.2m.
Please refer to Use of CB at Structures within the Technical Construction File: Issue 6 for further information and construction guidance.
|Certified to EN1317-5:2007
|Containment level – H2
|Working Width – W2*
|ASI – B
|* The barrier would be deemed as H2W1 under the requirements of EN1317-5:2010 with a vehicle intrusion of VI2.
Highway Solution Benefits
- A tested and complete solution
- CE mark on installed ‘as-tested’ solution
- Minimal Maintenance
- Serviceable life of at least 50 years (for CB)
- High containment (H2) reduces risk of crossover accidents
- Economic and sustainable
- Rapid and easy installation
- Space saving
- Low whole-life cost
- Reduced traffic congestion – fewer lane closures
- Designed to redirect errant vehicles
- Variety of solutions
- Improved worker safety – fewer interventions for repair
- Reduced risk of impact injuries to motorcyclists because of its smooth face