What is the diameter of the Legacy Way tunnel?

Legacy Way Tunnel: Dimensions and Design

Legacy Way, an urban road tunnel in Brisbane, Australia, consists of two twin tunnels, each spanning 4.25 kilometers. These tunnels are designed to facilitate smooth traffic flow in the city.

Diameter:

The outer diameter of each tunnel is 12.4 meters. This ample size allows for the construction of a spacious internal road measuring 11.3 meters in diameter. This generous width ensures adequate space for vehicles to travel comfortably and safely.

Design Considerations:

The Legacy Way tunnels were meticulously engineered to meet rigorous urban use standards. The following key design considerations were incorporated:

• Robust Structure: The tunnels are constructed with durable materials to withstand the demands of heavy traffic and potential geological disturbances.
• Efficient Ventilation: Sophisticated ventilation systems ensure a continuous supply of fresh air within the tunnels, improving air quality for vehicle occupants.
• Lighting: Tunnels are equipped with advanced lighting systems to enhance visibility and ensure driver safety.
• Safety Features: Numerous safety features, such as emergency call boxes, fire suppression systems, and traffic monitoring, are integrated to ensure the well-being of motorists.

Construction and Maintenance:

The construction and maintenance of the Legacy Way tunnels were managed as a comprehensive project. The construction phase involved meticulous planning and skilled execution to ensure the tunnels met the highest standards. Following construction, a 10-year maintenance contract was awarded to ensure the tunnels remain in optimal condition and continue to operate efficiently.

In conclusion, the Legacy Way tunnels, with their impressive diameter of 12.4 meters and internal road width of 11.3 meters, are designed to provide efficient and safe traffic flow in Brisbane. Their robust construction, sophisticated design, and ongoing maintenance ensure that the tunnels continue to serve as vital infrastructure for the city.