Bay Area Infrastructure

Learn more about Langan’s experience with infrastructure projects in the Bay Area.

SFO Long Term Parking Garage No. 2

OVERVIEW
The design-build SFO Long Term Parking Garage 2 provides capacity for 3,600 vehicles. The 6-story, 1.2-million-SF parking structure was designed to be most technologically advanced structure of its kind with an Automated Parking Guidance System and infrastructure for 20% electric vehicle charging. The structure is a certified green Parksmart garage, and will achieve net-zero energy consumption via the use of photovoltaic panels, potentially non-potable water in the concrete mix, and other sustainability features. This facility includes a pedestrian and vehicle bridge that connects to the adjacent garage.
AWARDS
American Society of Civil Engineers – Region 9, Airports & Ports Project Award (2019)
American Society of Civil Engineers – San Francisco Section, Airports & Ports Project of the Year (2019)
San Francisco Collaborative Partnering Steering Committee (SFCPSC) – Best of Buildings and Collaborative Partnering Award (2019)
Engineering New Record (ENR) California, Best Project North, Airport Transit (2019)

Location
South San Francisco, California

Clients
DLR Group | Kwan Henmi
Nibbi Brothers

Services
Geotechnical
Earthquake/Seismic
Environmental

Architects
DLR Group | Kwan Henmi
FMG Architects
Adrienne Wong & Associates

Strategic Partner
Watry Buehler Collaborative


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


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


Carquinez Suspension Bridge

OVERVIEW
Langan provided geological and geotechnical services for the new Carquinez suspension bridge constructed just west of the existing southbound bridge. The work was performed for the California Department of Transportation (Caltrans).

Location
Crockett, California

Client
Department of Transportation

Service
Geotechnical


Lambert Bridge Replacement

OVERVIEW
Langan provided geotechnical services for a new 240-foot pre-stressed concrete open spandrel arch spanning Dry Creek to replace a historical pinned through truss bridge. The new bridge will provide two 11-foot lanes with two 3-foot shoulders, replacing the 16-foot wide single lane bridge. We developed foundation recommendations and seismic design parameters in accordance with Caltrans Standards.

Location
Sonoma County, California

Client
OPAC Consulting Engineers

Services
Geotechnical
Earthquake/Seismic


Mission Bay Infrastructure

OVERVIEW
Langan is the geotechnical consultant for the majority of the public infrastructure improvements within Mission Bay — a 303-acre redevelopment. Projects neighborhood parks, utilities that tie into the existing City and County of San Francisco utility system (including replacement and rerouting of a 66-inch sanitary sewer force main), new roadways and sidewalks, parks, foundations for light poles and Muni Light Rail System power poles, temporary and permanent pump stations, and jack-and-bore pits under existing roadways.

Location
San Francisco, California

Client
Mission Bay Development Group

Service
Geotechnical


Pine Hill Road Bridge Replacement

OVERVIEW
Pine Hill Road Bridge crosses over Swain Slough and is a 63-foot long three span timber bridge built in 1955. After being identified as structurally deficient by Caltrans and the Federal Highways Administration, the bridge was replaced with a 70-foot-long reinforced concrete bridge in accordance with the Caltrans Seismic Design Criteria Version 1.7. Since site-specific determination of ground motions was required for design of the new bridge, Langan performed a ground response analysis.

Location
Eureka, California

Client
SHN Consulting Engineers & Geologists, Inc.

Service
Earthquake/Seismic


Penitencia Water Treatment Plant

OVERVIEW
The Penitencia Water Treatment Plant (PWTP) is owned by Santa Clara Valley Water District. The existing PWTP was built in 1974 and has recently undergone extensive reconstruction. The site is underlain by a deep landslide. Plans are to construct a 3,535 SF, single-story maintenance building that will be made of lightly loaded concrete block or masonry unit. We developed foundation design criteria for the maintenance building and evaluated the potential for geologic hazards such as landslides.

Location
San Jose, California

Client
Santa Clara Valley Water District

Service
Geotechnical

Architect
Winzler & Kelly


Selected Projects