Autumn  2016
Beach Bridge
Santa Barbara, California

The Goleta Slough serves as the only access to a local beach in Santa Barbara that hosts more than 1 million visitors per year. Constructing a bridge across this slough---- a tight space in an environmentally sensitive and busy area---- is challenging, to say the least, but with thoughtful planning and careful monitoring, the foundation work for the Goleta Beach Park Bridge will come to a successful conclusion this month.
 
The foundation of this bridge consists of 15 drilled shafts up to 90 feet deep and 6 feet in diameter. Oscillators were used in conjunction with a Bauer BG40 drilling rig to install the full depth temporary casing required due to the loose beach sands. Space restrictions required that concrete be pumped across the water during the installation of the drilled shafts north of the slough. 
 
The new bridge is scheduled to open in August 2017 and will include two traffic lanes, shoulders, a sidewalk, and a bike lane. 
 
For more information, please contact Kyle Sansing at ksansing@malcolmdrilling.com
Night Shift
Fremont, California

The Niles Boulevard Bridge, which spans the Union Pacific Railroad and BART tracks at the Fremont/Union City border, was in need of a seismic retrofit after the Loma Prieta earthquake. After considering the cost and restrictions of retrofitting the existing structure, it was determined that a replacement bridge was the best option. The new cast-in-place, prestressed concrete box girder bridge is being built adjacent to the existing bridge, allowing all tracks to remain in operation during construction.
 
Malcolm's scope on the new bridge was to install three drilled piers 9 feet in diameter and 100 feet in depth. The proximity of the piles to the existing tracks and the loose ground conditions required the use of full depth temporary casing installed using the oscillator method.
 
This project required a very detailed work plan with drawings that documented every position and movement of the equipment hour by hour when the trains were not running and minute by minute when trains were running. Additionally, any work or equipment that could potentially foul the existing track had to be at least 25 feet away from the rails when trains were active. With this in mind, Malcolm performed the majority of its work during weekend nights when the trains were not in operation.
 
Even with all of the unique challenges presented by this project, Malcolm delivered a quality, integrity-tested product on time and on budget. The bridge is expected to be complete in spring/summer 2017.
 
For more information, please contact Eleazar Sotelo at esotelo@malcolmdrilling.com
Smooth Shoring
Seattle, Washington

In the heart of the rapidly expanding South Lake neighborhood of Seattle, a 40-story mixed-use high-rise with four levels of underground parking is well under way and on track for a timely completion. The final structure will have 461 residential units, 374 parking stalls, and more than 15,000 square feet of retail space. Malcolm was selected by Holland Partner Group to do the shoring work on this challenging site that is bound by three city streets and an 8-story concrete structure to the north. 

Malcolm's work began prior to demolition of the previous structure---- "Ducky's Building"---- when post tensioned soil nails were installed through the 10-inch foundation walls on two separate levels. Once demolished, the foundation design required both the north and south walls be underpinned with 60-foot soldier piles. To the west (alley side) of the site, a total of 66 tie-rods were drilled, each 28 feet in length and drilled from the 970 Denny site through the alley and into a previously cored 9-inch hole inside the adjacent underground parking structure. In addition to the temporary shoring, Malcolm installed six deep water wells 12 inches in diameter, targeting the lower confined aquifer. 

The project team encountered several challenges throughout construction, yet managed to beat the contractor's schedule by several weeks.

For more information, please contact Chase Chappelle at cchappelle@malcolmdrilling.com
Mountain West Debut 
Salt Lake City, Utah

Redevelopment of the Salt Lake City International Airport has been under way for a couple of years now and is on track for completion in 2020. Malcolm is proud to have their newest regional office, Mountain West, contracted to provide ground improvement, shoring, excavation, and dewatering services for a new terminal building and concourse structure on this impressive $20 million design build project.
 
For this ground improvement scope, a seismic design is required to mitigate soil liquefaction. This will include more than 7,500 stone columns that are 3 feet in diameter and will range in depths from 29 to 44 feet. To meet the demands of the project schedule, Malcolm added two new stone column vibrator systems and three new duty cycle cranes to its already large equipment fleet, allowing four stone column machines to be in operation simultaneously. The cranes, two new Liebherr HS 8100s and a new Bauer MC64, are outfitted with state-of-the-art data acquisition controls, giving the Malcolm team all the information they need to maximize performance on their largest stone column installation to date. 
 
For more information, please contact Rick Hanke at rhanke@malcolmdrilling.com
Expanding the Blue
Driven by industry demand for more ground improvement technologies, such as soil mixing, jet grouting, vibro compaction, and slurry wall construction, Malcolm has expanded its ground improvement competencies to all of its regional offices. Now its complete scope of deep foundation, earth retention, and ground improvement services will be offered throughout the United States at its Northern California, Southern California, Southeast, Northwest, Midwest, and Mountain West locations. 

To learn more about this expansion and how Malcolm can bring its expertise to your next project, contact  Peter Faust at  pfaust@malcolmdrilling.com
Heading to the Big Apple
Malcolm is pleased to be exhibiting at the  Deep Foundations Institute's 41st Annual Conference├é on Deep Foundations in New York, October 12-15. 

If you're attending the conference, please stop by and visit us at  Booth #508!
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