Langan International Infrastructure Qualifications

Rion-Antirion Bridge

OVERVIEW
Langan International served as the Lenders' Technical Advisor for this €1 billion multi-span cable stayed bridge spanning the Gulf of Corinth in Greece. The project was built by a French-Greek concession consortium led by VINCI. It consists of a 3.2 kilometer long deck constructed in an area of deep sea waters (65 m+), marginal soils and high seismicity. Construction involved dry docks, wet docks, deep dredging, underwater high-voltage cable relocation, soil improvement, tension leg barges, and off-shore techniques for the float-out and final positioning of the 90-meter diameter pylon bases.
AWARDS
2014 International Federation of Consulting Engineers Award of Merit
2007 Deep Foundation Institute Outstanding Project Award
2006 International Association for Bridge and Structural Engineering Award for Outstanding Structure
2005 American Society of Civil Engineers Outstanding Civil Engineering Achievement Award
2005 American Council of Engineering Companies New York Diamond Award
2005 American Council of Engineering Companies National Grand Award

Location
Corinthian Straits, Greece

Clients
GEFYRA (VINCI-led concession consortium)
Bank of America
Bank of Tokyo-Mitsubishi (UK)

Services
Lenders Technical Advisory
Geotechnical
Site/Civil
Environmental

Strategic Partner
Parsons Transportation Group


Elefsina-Korinthos-Patras-Pyrgos-Tsakona (EKPPT) Motorway

OVERVIEW
Langan served as Lenders' Technical Advisor (LTA) for the design, construction, financing, operation, maintenance and exploitation of the EKPPT motorway in Greece, which was built by a trans-European concession consortium led by VINCI. The 365-km motorway links Athens and Korinthos to the western end of the Peloponnese, including the Rion-Antirion Bridge, and significantly improves the safety of the existing road between Korinthos and Patra.

Location
Greece

Clients
Olympia Odos (VINCI-led concession consortium)
Crédit Agricole (France)
Natixis (France)
Alpha Bank (Greece)
Eurobank (Greece)

Services
Lenders Technical Advisory
Geotechnical
Site/Civil
Environmental
Natural Resources & Permitting
Traffic & Transportation

Strategic Partners
VINCI (France)
HOCHTIEF (Germany)
J&P-ETETH (Greece)
AKTOR (Greece)
TERNA (Greece)


Chacao Bridge

OVERVIEW
Langan served as an Independent Engineer to provide design checking as part of Ammann & Whitney's team for this 2.5 km long suspension bridge. The project concession consortium was led by HOCHTIEF. The suspended bridge was planned to link the island of Chiloé with continental Chile through the Chacao Channel. When completed, it was supposed be the largest suspension bridge in South America.

Location
Chacao Channel, Chile

Clients
Chiloé Bicentennial Bridge (HOCHTIEF-led concession consortium)
Ammann & Whitney

Services
Design Checker
Geotechnical
Earthquake/Seismic

Strategic Partners
HOCHTIEF (Germany)
VINCI (France)
American Bridge (US)


Manzanillo International Terminal

OVERVIEW
The new construction required dredging of the adjacent bay for ship movements. In addition, a new 16-hectare container storage area was created within the existing bay. Deep foundation support of this area was not economically feasible. Consequently, a vertical wick drain system combined with fill surcharging was used to accelerate settlements to allow for near future construction while minimizing post-construction settlements.

Location
Colon, Panama

Client
Stevedoring Services of America

Service
Geotechnical


PortMiami Tunnel

OVERVIEW
The PortMiami Tunnel project was built in a public-private partnership (P3) and is the first large-diameter tunnel constructed in Florida's challenging soft sedimentary geology using a tunnel boring machine (TBM). The purpose of the PortMiami Tunnel is to relieve traffic congestion in downtown Miami by diverting car, truck, and bus traffic from nearby highways directly to the Port of Miami through twin 42-foot diameter tubes extending below the main ship channel. Langan evaluated the subsurface data to develop the geotechnical engineering parameters required for design of the bored tunnel and the TBM. We also observed and monitored early-phase testing consisting of foundation load testing and Cutter Soil Mixing for the U-wall and cut-and-cover portions of the project.
AWARDS
American Council of Engineering Companies Engineering Excellence Awards
Florida Engineering Society
American Society of Civil Engineers
American Road & Transportation Builders Association
Project Finance Magazine

Location
Miami, FL

Clients
Bouygues Construction
Jacobs Engineering Group

Service
Tender & Contract Phase Support
Geotechnical

Strategic Partners
Miami Access Tunnel Concessionaire
Florida Department of Transportation
Miami-Dade County
City of Miami


Goethals Bridge Replacement

OVERVIEW
Langan was the lead designer of a temporary access road that was required to provide a stable working platform to construct the new bridge. As the "Permitting Specialist" for the design phase of the project, Langan addressed a wide range of environmental management and permitting requirements. Engineering and environmental responsibilities included preparation of a draft Environmental Management Plan, wetland impact analysis for concept road plans, draft permit condition compliance reporting submissions, prepared permit modification packages for wetland permitting, and prepared new permit applications required for construction dewatering activities for New Jersey and New York.

Location
Elizabeth, NJ / Staten Island, NY

Clients
Parsons Transportation Group
Kiewit-Weeks-Massman, AJV

Services
Natural Resources & Permitting
Geotechnical
Site/Civil

Strategic Partner
The Port Authority of New York and New Jersey


Moynihan Station Redevelopment – Phase 1

OVERVIEW
Langan provided geotechnical, site/civil, land surveying, and 3D laser scanning and modeling services during the initial phase of the Moynihan Station development project. The project expands the nation's busiest train station, Pennsylvania Station, across Eighth Avenue into the historic James A. Farley Post Office Building, and first phase project components included construction of the West End Concourse, pedestrian plazas, and new subway access corridors.
AWARDS
2018 Urban Land Institute New York Excellence in Development Awards, Civic Space
2018 ACEC New York Engineering Excellence, Diamond Award
2018 Greater New York Construction User Council Outstanding Projects, Infrastructure

Location
New York, NY

Client
Skidmore, Owings & Merrill

Services
Geotechnical
Site/Civil
Terrestrial Scanning/BIM
Traditional Surveying

Strategic Partners
Moynihan Station Development Corporation
Amtrak


Ultimate I-4 Expansion

OVERVIEW
Langan provided mobile mapping, video logging, field video capture, and geospatial data integration services in support of the major expansion of a 21-mile stretch of U.S. I-4, which includes the addition of four new express lanes, and reconstructed interchanges and bridges.

Location
Orlando, FL

Client
Skanska/Granite/Lane JV

Service
Mobile Mapping/UAS Mapping


Golden Gate Bridge, North Approach Viaduct Seismic Retrofit

OVERVIEW
Langan provided geotechnical services during the seismic retrofit of the north approach viaduct of the Golden Gate Bridge. The retrofit included replacing the four steel towers, which supported the approximately 1000-foot-long, six-lane-wide north viaduct approach.

Location
San Francisco, CA

Client
Balfour Beatty Construction

Service
Geotechnical


Union Station – Capital Improvements

OVERVIEW
Langan was retained to perform multiple services at this busy landmark Amtrak facility for future proposed improvements including a mixed-use overbuild project, below-grade parking, and track service improvements. Langan performed a boundary, topographic, and utility survey to facilitate the design and permitting of site demolition work; and construction of a substation, parking lot improvements, and several new catenary structures. Langan also performed a 3D laser scan of the Amtrak rail lines and surrounding parcel features from an adjacent lot, as well as geotechnical and civil engineering services to support the permitting and construction of the improvements.

Location
Washington, DC

Clients
Burns Engineering, Inc.
Amtrak

Services
Site/Civil
Geotechnical
Traditional Surveying
Terrestrial Scanning/BIM


Chalmette Loop Levee

OVERVIEW
The Chalmette Loop Levee is a primary flood protection component of the Army Corps of Engineer's mission to protect the City of New Orleans. The Bayou Bienvenue to Bayou Dupre Reach LPV 145 is a 6-mile stretch of levee flood protection improvement adjacent to the Mississippi River Gulf Outlet waterway. The improvement consists of a 10- to 14-foot reinforced concrete T-wall to be constructed atop the existing levee to improve the flood protection to a 100-year event. Langan's role included pile foundation and subgrade stabilization design, constructability reviews, temporary bridge structural foundation design, and value engineering.

Location
New Orleans, LA

Client
Chalmette Levee Constructors (Kiewit/Massman/Traylor JV)

Service
Geotechnical

Strategic Partner
US Army Corps of Engineers


VTA Parking Structures – Milpitas & Berryessa Stations

OVERVIEW
Langan is providing geotechnical engineering services for two parking structures at Milpitas and Berryessa stations. The two individual projects each include the construction of a 1,200-space, 432,500 GSF structure constructed with cast-in-place, post-tensioned concrete beams and slabs. The Milpitas Station parking structure will be a 6-level at-grade structure. The Berryessa Station parking structure will be a 3-7 level at-grade structure. Both sites are underlain by clay with interbedded layers of sand.

Location
Milpitas, CA

Client
Santa Clara Valley Transportation Authority

Service
Geotechnical


Selected Projects