TEC Tunnel Engineering consultants

Project description

The river Daugava divides the city of Riga into two parts, the west bank and the east bank. The Daugava Tunnel project is an 8 km highway link, starting at the east bank with an approach road of 2250 m with several junctions and connections to the existing road network, an immersed tunnel part with a length of approximately of 1300 m and an approach road on the west bank of the river of 4500 m, also with several connections and crossings with the existing road network. Both a concrete immersed tunnel as a steel shell tunnel was designed.

Scope of work

Design Engineer and Employer’s representative for all the aspects of the project during the feasibility phase and the tender preparation phase, including:

• Quick scan of a high cable stayed bridge, bored tunnel and an immersed tunnel
• Preliminary design
• Basis of design
• Employer’s requirements for the Approach roads
• Employer’s requirements for the Tunnel Civil Structures
• Employer’s requirements for the Tunnel Electrical and Mechanical Installations
• Employer’s requirements Definition Drawings
• Employer’s requirements, Quality System