Innovative tunnel solutions

Tunnels are an important, if often unseen, component of the nation's infrastructure.

As many older tunnels require repair and improvement, modern technology holds the promise that even more impressive, modern underground structures hold to help solve pressing congestion and development challenges.

HNTB has in-depth experience providing innovative solutions and managing risks on tunneling projects in the highway, transit, rail, aviation and water resources markets. Projects range from small-diameter excavations to the largest machine-bored tunnel in the world. Some of the nation’s most complex underground projects have benefited from the firm’s award-winning planning, design and support services, including the Devil’s Slide Tunnel in San Mateo, Calif., the Washington Dulles International Airport tunnels and the SR 99 Alaskan Way Viaduct and Seawall Replacement project in Seattle. 

Key questions to address include:

• How can project controls, public-private partnerships and alternative delivery techniques to meet the demanding schedules and tight budgets of today’s tunnel infrastructure?