ACO offers several solutions and products for the drainage in portal areas, that are adjusted for the specificl challenges at ramps. The drainage systems of the driveways have to collect and drain the rainwater before it finds its way into the tunnel. Especially ramps and trough structures present high challenges for the drainage of surfaces. The traffic inside the tunnel may not be disturbed even at heavy rain. For this specific use case ACO supplies products for the cross drainage, line drainage and point drainage. The ACO tunnel team will be pleased to assist you with dimensioning and design of your ramp drainage.