With the ground thawing and the temperature rising, Holland Engineering prepares to move forward with three significant projects slated for construction this year.
The first likely project to break ground will be a segmental block retaining wall located in South Haven Michigan. The Edward W. Thompson American Legion Post 49 is located on the bluff overlooking Lake Michigan and the Scenic South Haven Harbor. Over the past several years, members have been noticing significant erosion of the bluff. HEI developed several options to stabilize the bluff and then presented these options to a committee made up of post members and then to the entire post. A two-tiered segmental block design was chosen and the walls were engineered and permitted before the construction was sent out for bid. After more than a year of planning, the construction is scheduled to begin early this spring with completion prior to the seasonal kick-off Memorial Day holiday. HEI will be providing construction staking and engineering services throughout the construction process.
HEI is also preparing for the ground breaking of the West Michigan Park Dry Fire Line System. HEI will be providing construction staking, construction engineering and project management services on behalf of Park Township for this project. Park Township and the West Michigan Park Association are currently discussing the timing for construction of this project.
Thirdly, HEI is also preparing for the ground breaking of the Thompson River Bank Stabilization. The Thompson River is an active river located in Harrison County, Missouri. Over the course of the last several years, the river has eroded its banks at an accelerated rate at this particular oxbow. This erosion is causing a local farmer to lose a significant amount of property and crops and is also quickly approaching two high pressure natural gas transmission lines. In order to mitigate the risk of the lines being exposed, TransCanada contracted with HEI to design and permit a solution to the erosion through the US Army Corps of Engineers. HEI teamed with the nationally renowned river engineering firm, River Research and Design, to develop several different bank stabilization alternatives and present them to both TransCanada and the US Army Corps of Engineers. The chosen design utilizes a combination of Bendway Weirs, Stone Keys, and Longitudinally Peaked Stone Toe Protection in place of hard bank armoring to protect the bend from further erosion. These bank armoring methods have been developed and thoroughly tested by the Corps of Engineers along the Mississippi River and its tributaries and have proven to be both a cost effective and an environmentally friendly technique to stabilize oxbows and prevent continued river migration. To better coincide with the summer low flows and to protect the fish spawning that takes place in this section of the Thompson River, construction will not begin on this project until June 1, 2011. During construction, HEI will provide construction staking, construction engineering and as-built services on behalf of TransCanada.