AASHTO has released its “Technical Manual for Design and Construction of Road Tunnels – Civil Elements, First Edition.” These guidelines provide recommendations for planning, design, construction, and structural rehabilitation and repair of the civil elements of road tunnels, including cut-and-cover tunnels, mined and bored tunnels, immersed tunnels, and jacked box tunnels. This 2010 publication is currently available only for pre-order. A delivery date estimate has not yet been announced.

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