251 Starkey Street, St. Paul, MN 55107 info@bolander.com (651) 224-6299 Heartland Trail Home > Our Projects > Heartland Trail Project Details Capabilities: Earth Retention | Earthwork | Slope Stabilization This Minnesota Department of Natural Resources project is a link in the new state trail system between Detroit Lakes, MN and Frazee, MN. In the process, Bolander stabilized a 40’ tall slope directly between Acorn Lake and Highway 10. Accessing this job was no easy task; prior to starting, Bolander designed a temporary access road along the lake which allowed issuance of a MnDNR work in waters permit. Once the trees were cleared and the access road installed, we worked along the lake shore to install a 440′ long sheet pile wall which was later enhanced with over 100 tie-back anchors. Flanking the sheet pile were two big-block retaining walls, each over 200′ long. Above the trail, on the upper part of the steep slope, Bolander installed over 2500 percussion anchors in a large reinforced zone. Throughout the duration of the project, Bolander moved no less than 25,000 CY of soil and installed numerous storm water structures. Finally, the trail itself was paved, the site seeded and landscaped – now ready to connect visitors with the outdoors. Photos Location: Detroit Lakes, Mn 251 Starkey Street, St. Paul, MN 55107 info@bolander.com (651) 224-6299

251 Starkey Street, St. Paul, MN 55107 info@bolander.com (651) 224-6299 RBC Gateway Tower, Changing the Skyline Home > Our Projects > RBC Gateway Tower, Changing the Skyline Project Details Capabilities: Deep Foundations | Earth Retention | Earthwork | Environmental | Utilities The 37-story Gateway Tower has been a masterclass display of Bolander’s dominance in the Twin Cities urban construction market. This project utilized our full compliment 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. In addition to coordinating our work with other trades our project management team also had to take into account the city’s plans for the reconstruction of Hennepin Avenue and an adjacent tower, 270 Hennepin. The aforementioned 22-story tower, 270 Hennepin, also became a Bolander project marking 2019 as the year Bolander teamed to change the skyline. Photos Location: Minneapolis, Mn 251 Starkey Street, St. Paul, MN 55107 info@bolander.com (651) 224-6299