Detailed design for the drainage of venetikos tunnel, egnatia motorway, grevena prefecture, west macedonia, north greece

The diverse terrain crossed by the Egnatia Motorway together with the special environmental conditions encountered imposed the construction (provision for) 73 twin-bore road tunnels of an overall combined length of 100km (measured as single carriageway) measured at 50km of single carriageway. Veneticos tunnel was a 700 m long double bored tunnel lying immediate afterwards the Veneticos Bridge. The hydraulic design included the following: (a) surface road drainage and (b) drainage system to prevent flooding from upstream catchment areas along with the design of the necessary hydraulic structures (ditches, culverts, etc).
Veneticos tunnel was a 700 m long double bored tunnel lying immediate afterwards the Veneticos Bridge. The hydraulic design included the following: (a)water drainage system of the Venetikos tunnel (b) drainage system to prevent flooding from upstream catchment areas along with the design of the necessary hydraulic structures (ditches, culverts, etc).