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Trusted Innovative Underground Solutions

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Trusted Innovative Underground Solutions TRUSTED INNOVATIVE UNDERGROUND SOLUTIONS The HNTB Companies Infrastructure Solutions INNOVATIVE TUNNEL SOLUTIONS HNTB experts have the insight and knowledge to provide innovative solutions on a wide range of tunnels, including cut-and-cover, tunnel boring machine (TBM) tunnels, conventional tunneling, NATM, immersed tube tunnels, shaft construction and micro-tunneling. Our long history in planning, program management, design, construction management and technical services for tunnel structures includes award-winning projects on some of the country’s most complex tunneling projects. Recipient of numerous national and international awards including the International Tunneling Award, Advisor/ Program Manager of the year and the Tom Lantos Tunnels at Devil’s Slide UCA of SME Project of the Year Award. San Mateo County, California Crenshaw/LAX Transit Corridor Istanbul Strait Road Tunnel Project Los Angeles Istanbul, Turkey HNTB is the principal engineer and The project was challenged by architect for Walsh/Shea Corridor the area’s varied geology and Constructors on an 8.5-mile, eight- propensity for earthquakes, high station, light rail design-build project water pressure below sea level that will connect the Los Angeles and the tunnel’s large-diameter/ County Metropolitan Transportation double-deck lane configuration. It Authority’s existing Green Line with the was recognized as the ITA Project Expo Line and integrate Los Angeles of the Year. International Airport into the regional rail network. Sound Transit University Link COMPREHENSIVE TUNNELING EXPERIENCE INCLUDES: (U-LINK) Extension Seattle • Soft ground tunnels • Ground/structure interaction • Rock tunnels • Seismic design and seismic retrofit of tunnels HNTB’s role included design of • Caverns • Geotechnical and structural instrumentation more than 3 miles of twin-bore • Shafts • Ground improvement tunnel and two underground stations. Project complexity included twin-bore • SEM/NATM • Geohydrology/groundwater modeling segmental tunnels in a seismically • Cut-and-cover structures • Dewatering active, urban environment; 18-foot • Immersed tunnels • Waterproofing 10-inch inside diameter, single-pass • Micro-tunneling and pipe jacking • Blast design and monitoring lined tunnels. • Tunnel condition survey, inspection • Fire life safety and rehabilitation • Tunnel ventilation • Geotechnical engineering • SES and CFD analyses • Rock mechanics and engineering geology • Feasibility and alternative analysis • Geotechnical and geophysical investigations • Program management • GDR, GIR and GBR • Construction management and resident engineering • Liner design • Underground construction and engineering services • Excavation support • Risk management • Underpinning, support and protection • Peer and value engineering review of existing structures • Constructability/construction phasing • Settlement analysis and mitigation • Visualization and 4-D virtual construction Presidio Parkway San Francisco HNTB served as lead designer and provided construction design services for Phase II of the Presidio Parkway design- build project, which links San Francisco to the North Bay in the heart of the Golden Gate National Recreation Area. B&P Tunnel Replacement Project Baltimore HNTB is the project management consultant to Amtrak for the delivery of the Baltimore & Potomac Tunnel replacement project. The existing B&P Tunnel is more than 143 years old and is approaching the end of its useful life. While the tunnel currently remains safe for rail transportation, it requires substantial maintenance and it does not meet current design standards. The project will include four new high-speed (100+ MPH) tracks, is projected to cost approximately $5 billion and take 10 years to complete. SR 99 Alaskan Way Viaduct and Seawall Replacement Seattle HNTB is lead designer for the Washington State Department of Transportation’s SR 99 Alaskan Way Viaduct and Seawall Replacement project. The design- build project is constructing the largest tunnel in the world with a two-level roadway to replace the aging, earthquake-damaged Alaskan Way Viaduct. Elizabeth River Tunnels Norfolk, Virginia HNTB is providing construction quality control services as part of the design-build contract for the Elizabeth River Tunnels public-private partnership project in Norfolk, Virginia. A component of the project, the new Midtown Tunnel is an all- concrete, immersed-tube tunnel adjacent to the 50-year-old Midtown Tunnel. Minneapolis-St. Paul International Airport Light Rail Transit Tunnels and Lindbergh Station Minneapolis Washington Dulles International Airport Tunnels The 10-mile multi-tunnel is the longest Chantilly, Virginia airport airside tunnel system to accommodate a new baggage handling Leading design and construction, HNTB used multiple system, underground tugs, utilities and methods and designs to mine twin light-rail tunnels. The pedestrians. It was constructed using tunnels are the largest in the state and are believed to TBM, NATM and cut-and-cover methods. be the first large-diameter tunnels bored under an active commercial airfield. For more information, please contact: Sanja Zlatanic, PE Chair, Tunnel Practice Senior Vice President HNTB Corporation Empire State Building 350 Fifth Avenue, 57th Floor New York, NY 10118 USA Direct (212) 294-7567 Mobile (646) 652-9440 [email protected] The HNTB Companies Infrastructure Solutions hntb.com ­­© 2018 HNTB Companies. All rights reserved. Reproduction in whole or in part without written permission is prohibited. HC126.
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