Abbott Northwestern Central Utility Plant

Project Details

Client: JE Dunn
Location: Minneapolis, MN
Services: Building Demolition, Earth Retention, Excavation, Site Utilities

Overview

In the spring of 2021, JE Dunn awarded Bolander the site work construction for the Abbott Northwestern Central Utility project. Once awarded, we worked closely with the client on the high-level planning required to execute this complicated project. Bolander’s work consists of Building Demolition, Earth Retention, Excavation & Site Utilities.

Located on the corner of Chicago Avenue and East 26th Street, the new Central Utility Plant will replace the hospital’s outdated energy and steam-producing equipment with more reliable and energy-efficient technology. The hospital currently relies on steam and energy equipment dating back to 1956.

The project started with the demolition of the existing Harriet Walker and the Education buildings. Standing 6-Stories tall, the Harriet Walker building was a perfect opportunity to utilize the Liebherr R960 High-Reach Demolition Excavator. This machine has multiple configurations and the ability to reach 108’!

The Earth Retention portion of our work includes drill & set H-Pile and lagging, tie-backs, internal bracing, as well as soil solidification. Given the proximity to existing structures that are to remain intact as well as active medical facilities, vibration was a significant concern. Bolander worked with our engineering consultant to develop a plan to alleviate these concerns.

This project shows our ability to coordinate and collaborate with the general contractor as well as the other project partners and stakeholders.

Essentia Hospital – Vision Northland

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Project Details

Client: McGough Construction
Location: Duluth, MN
Services: Building Demolition, Earth Retention, Excavation, Site Utilities

Overview

Essentia has been an exciting project with its success rooted in our partnership with Northland Constructors of Duluth. Starting in 2019, Northland took the lead on excavation and utilities while Bolander began demolition, deep foundations and earth retention.

The demolition has been unique to both the client and the structure involved.

“Essentia is an active hospital,” explained Evan Mackey, Demolition Division Manager, “Bolander worked closely with the general contractor and Essentia to implement means and methods that reduced noise, dust and vibration to mitigate impact to sensitive medical equipment, patients and pedestrian traffic.” Additionally, Bolander crews worked on demolition of a post-tension parking ramp. This included de-tensioned and re-tensioned structural cables.  Demolition crews also dismantled two existing skyways.

Foundation crews had to account for topographical challenges, as the site drop 110’ towards the shore of Lake Superior. Their work included five separate earth retention systems retaining as much as 62 vertical feet of rock and soil.  To maintain the aggressive schedule, our crews showed true commitment working long hours and even drilling through Thanksgiving weekend. Furthermore, Bolander drilled 100 foundation rock anchors and is scheduled to install 32 drilled piers.

Essentia has been an exciting project where Bolander, with our talented leadership and crews, overcame several obstacles to complete our scope of work safely and on time.  This project has sparked a great relationship with Northland Constructors which will lead to more opportunities for us in the Duluth market.

Mayo Kellen Research

Project Details

Client: Knutson Construction
Location: Rochester, MN
Services: Building Demolition, Earth Retention, Excavation, Site Utilities

Overview

Bolander was selected by Knutson Construction to perform the site construction for the Kellen Research project in the Spring of 2021. Our work was headed up by Bolander’s Rochester Division.

Once complete, the Kellen Research Building will be 11 stories and 176,000 Square Feet. The project is located at the intersection of Third Street SW & Fourth Avenue SW with connections to Mayo Clinic’s Opus and Baldwin buildings.

The most technical aspect of this project was creating a deep excavation for the new foundation immediately adjacent to the existing Opus Building and City streets on two sides of the proposed building.

To achieve the required excavation depths, Bolander worked with Braun Intertec to develop an earth retention system which was composed of H-Piling/Timber Lagging, Tie-Backs, and Shotcrete.

Due to the concern of any vibrations that could result in damage to the adjacent structure, Bolander installed the H-Piling using a Drill & Set method. Other than the installation of the earth retention system, Bolander’s work consisted of Excavation, Drilled Foundation Piers & Site Utilities.

This project was a prime example to demonstrate Bolander’s ability to seamlessly combine our multiple disciplines together and deliver a quality product to our clients.

RBC Gateway Tower

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Project Details

Client: McGough Construction
Location: Minneapolis, MN
Services: Building Demolition, Earth Retention, Excavation, Site Utilities

Overview

The 37-story Gateway Tower has been a masterful display of Bolander’s dominance in the Twin Cities urban construction market.  This project utilized our full suite of capabilities and construction services to deliver the 55-ft deep excavation.

The project began with the installation of an H-Pile earth retention system followed quickly by the removal of over 130,000 cubic yards of rock and soil and the installation of 113 drilled piers extending an additional 48-ft deeper into rock.  To minimize disruption to the heavily trafficked Hennepin Avenue corridor, pipe jacking was elected as the least invasive way to connect site utilities into the city’s infrastructure.

“Extensive logistical planning was necessary to execute this project properly,” said Senior Project Manager John Caroon, “In addition to coordinating our work with other trades we also had to consider the city’s plans for the reconstruction of Hennepin Avenue and an adjacent tower, 270 Hennepin.”

The 22-story tower, 270 Hennepin, also became a Bolander project marking 2019 as the year Bolander teamed to change the skyline.

The Abbey

Project Details

Client: Yellow Tree Construction
Location: Minneapolis, MN
Services: Building Demolition, Earth Retention, Excavation, Site Utilities

Overview

In the Fall of 2020, Bolander was awarded the Yellow Tree project, The Abbey, consisting of building demolition, excavation, and underground utilities in preparation for a new apartment building.

This project began with the separation and demolition of an addition to the original H. Alden Smith mansion in the Loring Park neighborhood in Minneapolis.

Given the mansion’s status on the National Register of Historic Places, the building separation required the highest level of protection and attention to quality. Much to the delight of our client, our talented demolition crew members executed this surgical building separation without incident.

After demolition was complete, Bolander began the task of excavating for the new apartment building foundation. Early on in the excavation phase, Bolander crews discovered a great deal of unforeseen buried building elements as well as contaminated soils. The contaminated and debris laden soils required landfill disposal.

The underground utility scope of this project consisted of a water main service, sanitary sewer service and storm sewer work. This work included three street connections.

The Abbey was a challenging project that folded together several of the services in which Bolander provides. This was yet another prime example displaying how Bolander overcomes project obstacles by working together.