I-80 / Central Avenue Operational Improvements Phase 1

Ghirardelli Associates was selected by CCTA to provide construction management services for this project which improves the traffic operations at the I-80/Central Avenue interchange and along Central Avenue between Rydin Road and San Pablo Avenue. The project will be completed in two phases. Phase 1 redirects left turns from westbound (WB) Central Avenue onto I-80 WB to the adjacent I-580 eastbound onramp at Rydin Road during weekend peak hours; and installs traffic signals at the I-580 ramps. The project also included installing 17 new ADA curb ramps along Central Avenue between Highways 80 and 580.

Ghirardelli Associates staff inspected the signalization of two 4-way stop intersection, the installation of four new variable message signs and overhead sign structure, the removal and replacement of 17 new ADA compliant curb ramps and the removal and installation of 100-feet of new barrier rail over the Union Pacific Railroad (UPRR) and Highway 580. We monitored compliance with the contract plans and specifications, as well as recorded and reported all construction activities and maintained reports in a project file. We maintained construction diaries that included documentation of the work progress, materials tested, and any other pertinent information in a daily diary for permanent record of events.
Photographs of project progress were taken on a regular basis and kept for permanent records to verify quality for acceptance.

The project also processed a million-dollar change order to remove and replace 3,000 tons of asphalt concrete along Central Avenue between Pierce Street and the I-580 overcrossing.
This project included many different inspection disciplines including, structures, civil, and electrical and required coordination with multiple different entities including, Contra Costa Transportation Authority, City of Richmond, Caltrans, East Bay Municipal Utility District, AT&T, UPRR, Stege Sanitation, and PG&E. The project staff, especially our field inspector, work very hard to make this project a success for both Ghirardelli Associates and our client.

Client: Contra Costa Transportation Authority (CCTA)
Location: Richmond, CA

GAI Awarded Construction Management Services for Slope Stabilization Project


Ghirardelli Associates was selected by OCTA to provide construction management services for the Los Angeles – San Diego – San Luis Obispo Rail Corridor (LOSSAN) Right of Way (ROW) Slope Stabilization Project.
The scope of work requires working within an active rail corridor and brings a unique set of challenges that require a combination of both methodical planning and the ability to adapt to the types of unforeseen conflicts typical of underground construction.
The LOSSAN rail corridor serves Metrolink, Amtrak, as well as Union Pacific and BNSF freight trains and is identified as the second most heavily traveled intercity passenger rail corridor in the nation. With combined annual ridership in excess of 7 million passengers, and the transport of countless tons of cargo, the maintenance and operation of this corridor is a key element in the functionality of the region’s overall transit system. The LOSSAN Slope Stabilization project is intended to repair previous erosion damage and to prevent future issues via a combination of enhanced drainage facilities and slope armoring.
Key Project Elements include:

  • Selective Slope Grading and Geosynthetic Armor Installation
  • Install Shotcrete along Slopes Close to Tracks
  • Railway Coordination
  • Utility Protection and Carrier Coordination
  • Underdrain Construction
  • Gunite Channel Construction
  • Rip-Rap Energy Dissipation Installations
  • Storm Water Pollution Prevention Planning (SWPPP) and Execution
  • Site Management Per SCRRA Requirements
  • Federal Transit Administration Funded Project

Client: Orange County Transportation Authority (OCTA)
Location: Orange, CA

GAI Awarded Washington District Sustainable Community Infrastructure Project


Due to its age and the demands of urban development, additional strain has been revealed in the Washington District’s infrastructure, including inadequate water, sewer, storm drain, and transportation backbones. Substantial utility and street improvements are needed in order to accommodate existing and alternative modes of travel in the neighborhood.
Ghirardelli Associates was selected by the City of West Sacramento to provide construction management services for the District project to correct infrastructure deficiencies. Sidewalks will be made more accessible, bike lanes added, and several roadways will be re-evaluated for more efficient multi-modal traffic flow. Large street canopy trees will be preserved, and new street trees will be planted. The project will also be designed to handle a future streetcar extension that will circulate along the Third Street corridor, jogging west to 5th Street and then east on C Street and over the new bridge to connect to Railyards Boulevard in Sacramento. Water, sewer, and storm lines will be upsized and replaced, and overhead utilities will be placed underground where feasible.
Construction is currently underway and is expected to be completed by January 2019. The funding sources will be a $4.2 million climate investment fund grant awarded by the California Strategic Growth Council for Infrastructure, the state Active Transportation Program (ATP), and local match by the city of West Sacramento’s community investment fund and sewer impact fees. The estimated design and construction cost is $5.7 million.
Client: City of West Sacramento
Location: West Sacramento, CA

Toll Booth Removal Phase 1


In 2014, TCA converted all the toll collection facilities along State Routes 73, 133, 241, and 261 from a cash/electronic toll collection to strictly electronic toll collection through a project called All-Electronic Tolling (AET). After AET was completed, TCA determined additional toll booth removals were needed where dual-lane ramps were encountered.
Work included removal of the toll booths, concrete barriers, and related equipment (including reconstruction of pavement), as well as restriping and re-signing, as required, to bring the roadway configuration to a standard condition.
The project comprised 13 total locations – 11 of them weekend closures. Originally the two non-weekend closures were to be performed at the end of the project, however, Ghirardelli recommended doing these two locations first, of which TCA approved, for they were not tied to the restrictive time constraints. Because the scope of work for the two locations was very similar to the weekend closures, we were able to monitor and refine the multiple activities of the work on an hourly basis to determine the best method to be used for the weekend closures.
The result was all 11-weekend ramp closure work were completed and reopened to traffic (on average) ~4 hours before time constraint limit. The project was delivered as promised to the public on time and the Contractor avoided heavy financial penalties.
Client: Transportation Corridor Agencies (TCA)
Location: Orange County, CA

GAI Awarded Bay Area Rapid Transit (BART) On-Call Construction Management Contract

On June 14, 2018 at 12:50pm, the Bay Area Rapid Transit (BART) Board unanimously voted on awarding eight companies each $25 million On-Call Construction Management Contracts. The Ghirardelli Associate’s team will be one of the eight teams awarded to deliver projects for the $3.5 billion General Obligation Bond—Measure RR—over the next five years. This work will help rebuild and upgrade the backbone of the Bay Area transportation system. BART originally carried 100,000 people per week, but now serves roughly 440,000 riders per weekday, and ridership is expected to increase 75% by 2040. The 44-year-old system is showing its age. Reinvestment is necessary to keep BART safe and reliable, to reduce crowding, and to keep cars off the road. Ghirardelli Associates will be there to help BART rebuild their aging system.
Funds must be spent on specific infrastructure programs:

  • Replace 90 miles of rail that has been severely worn down over 44 years of use
  • Repair tunnel walls damaged by water
  • Modernize BART’s 1960s-era electrical infrastructure
  • Enhance BART’s ability to withstand an earthquake
  • Prevent breakdowns and delays by replacing antiquated train control systems

eBART Ribbon Cutting Ceremony

Ghirardelli employees riding eBART
BART held a community ribbon-cutting celebration on Friday, May 25, 2018 at the new Antioch Station featuring free preview train rides and local entertainment. The BART to Antioch extension (eBART) began carrying riders in East Contra Costa County on Saturday, May 26, 2018.
The new service between the Pittsburg/Bay Point Station and Antioch is 10 miles long, adds two new stations, and provides much needed congestion relief on State Route 4. The extension will be able to carry an estimated 2,400 riders in each direction, per hour, during rush hours.
Ghirardelli Associates, Inc. is proud to have a continued presence on the construction and roll-out of the project since 2010 providing civil and electrical inspectors, office engineers, quality assurance auditors, assistant resident engineers and much more. A big thanks to those that played an active role in the project.

GAI Awarded Lower Berryessa Creek, Phase I and II


Ghirardelli Associates was selected by Santa Clara Valley Water District to provide construction management services for the Lower Berryessa Creek Phase I and Phase II project in Milpitas. It will provide 100-year flood protection to approximately 1,800 homes, schools and businesses in Milpitas.
Phase 1 included work on Lower Berryessa Creek from Penitencia Creek to Abel Street, which was divided into two reaches (A and B) for a total length of 2,400 feet. Phase 1 – Lower Berryessa Creek (Penitencia Creek to Abel Street): Raised the existing levee on the southwest bank, replaced the existing levee on the northeast bank with concrete floodwalls, constructed new headwalls, and raised and reconstructs a pedestrian bridge.
Phase 2 consists of improvements to Berryessa Creek from Abel Street to Calaveras Boulevard, which is divided in five reaches (C, D, E, F, and G) for a total of 6,000 feet. Phase 2 also includes improvements on the lower reaches of Calera Creek and Tularcitos Creek for a total of 3,000 feet. Lower Berryessa Creek (Abel Street to Calaveras Boulevard) raises levees, constructs floodwalls including spread footing and cast-in-drilled-hole (CIDH) piles foundation on both sides of the creek, reconstructs pedestrian bridge, constructs transitions structures and headwalls, constructs access roads and on-ramp and off ramps from access roads, including Armorflex paving, removes vegetation and re-vegetation, utility relocation, and outfall repairs.
This project requires permits from the U.S. Army Corps of Engineers (Clean Water Act Section 404 permit), California Department of Fish and Game (Streambed Alteration Agreement), California Public Utilities Commission (Application for General Order 88-B Approval and compliance with CPUC General Order 26-D), the San Francisco Bay Region Water Quality Control Board (Clean Water Act Section 401 certification of Section 404 permit), U.S. Fish and Wildlife Service, and Caltrans encroachment permits for work within state right-of-way. The project also requires encroachment permits from the City of Milpitas, the Santa Clara Valley Transportation Authority, Caltrans, Union Pacific Railroad, San Francisco Public Utilities Commission, as well as temporary construction easements and permanent easements from the City of Milpitas, the Milpitas Unified School District, and local property owners.
Client: Santa Clara Valley Water District
Location: Milpitas, CA

SR241 Wildlife Protection Fence Project Wins Award

​The Wildlife Protection Fence Project wins The Innovative Transportation Solution Award at the Annual WTS-OC Awards Gala. The $10 million fence project consists of 6.5 miles of fence on both sides of SR241 with heights ranging from 10 to 12 feet depending on the terrain and location. The anticipated fence effectiveness is a 90%-95% increase in undercrossing utilization which will decrease the vehicle-wildlife collisions along this state route.
Ghirardelli Associates provided Construction Management services to the Transportation Corridor Agencies for this project. Congratulations to Scott Fabel (Resident Engineer) and Jay Ryan (Field Inspector) of Ghirardelli Associates.
Who is the Transportation Corridor Agencies? TCA are two joint powers authorities formed by the California legislature in 1986 to plan, finance, construct, and operate Orange County’s toll roads. TCA consists of two local government agencies the San Joaquin Hills Transportation Corridor Agency which oversees the San Joaquin Hills Toll Road and the Foothill/Eastern Transportation Corridor Agency which runs both the Foothill Toll Road and the Eastern Toll Road.