• Rolling Prairie, Minnesota, Beneficial Use Area: A 100-Year Plan for Multiuse Land Management and Restoration Using Dredged Sediment

    Purpose: Inland waterway dredged sediment management is challenged by a lack of capacity in existing dredged material confined disposal facilities (CDFs) and a lack of available land to place sediment near frequently dredged navigation channels. Navigation operation and maintenance (O&M) dredging, material management, and coordination costs are increasing, and alternative long-term solutions are required. In response, the US Army Corps of Engineers (USACE), St. Paul District has addressed the challenge by investigating regional sediment management and beneficial use of dredged material when updating navigation pool–specific dredged material management plans (DMMP). The recently completed Pool 5 DMMP planning identified a 950 acre (384 ha)[1] placement site consisting of several land parcels available from willing sellers that will accommodate a “100-year plan” for dredged material management (USACE 2019). This technical note describes the multiple-use site plan that creates sand prairie and wetland habitat, provides public access to sand stockpiles, and implements agriculture studies with the University of Minnesota to evaluate the benefits of dredged material (i.e., sand) amendments in alluvial cropland soils, which has not been widely investigated. The Rolling Prairie site will demonstrate benefits of “distributed DMMPs” in which thin-layer placement on agricultural land near dredging locations can supplement traditional disposal methods. It also shows the advantage of having a large placement site to achieve multiple objectives.
  • Additive Regulated Concrete for Thermally Extreme Conditions

    Abstract: This study details a multiprong effort to validate the Cold Regions Research and Engineering Laboratory’s solution for concrete construction and repair in cold weather, Additive Regulated Concrete for Thermally Extreme Conditions (ARCTEC). ARCTEC is the product of several years of research and consists of a testing and simulation workflow which generates scenario-sensitive guidance for use of accelerating admixtures in concrete. This report details efforts to validate ARCTEC using real-world, full-scale, field demonstrations. These demonstrations were used to collect data on the behavior of concrete obtained through conventional supply chains, to assess the accuracy of the simulation component of the workflow, and test efficacy of ARCTEC guidance in achieving frost protection. Results indicate that ARCTEC is at a high level of maturity, and provides additive dosage guidance that ensures frost protection and strength development in concrete placed where overnight lows fall as low as 0°F. The effort and cost required to implement ARCTEC as a cold weather protection strategy is minimal, and significantly less burdensome than conventional methods. Any cold region installation with a winter construction or repair needs and access to conventional concrete supply chains could field ARCTEC, and reduce the cost and schedule constraints associated with winter construction.
  • The Kansas City District’s Regulatory Program: a balance between the environment, development and public interest

    Ever wonder what the Regulatory Branch does? We asked several program and project managers and David Hibbs, chief, regulatory program branch, to tell us about the work they do; they do a lot that you might not know about.
  • Corps seeks public comments on Port Fourchon draft Environmental Assessment and draft FONSI

    The U.S. Army Corps of Engineers is requesting public comments for the proposed deepening of the federal navigation channel at Port Fourchon, Louisiana.
  • USACE Jacksonville awards contract for maintenance dredging of Atlantic IWW in vicinity of Sawpit Creek

    U.S. Army Corps of Engineers, Jacksonville District, awarded a $6.9 million contract yesterday to Southwind Construction of Evansville, Indiana, for maintenance dredging of the Atlantic Intracoastal Waterway (IWW) federal navigation channel in the vicinity of Sawpit Creek, Nassau County, Florida.
  • The Chicago District is ready to deliver on additional $27.8 million in Fiscal Year 2024 Civil Works appropriations.

    The Chicago District is geared up to put an additional $27.8 million to work from the Fiscal Year 2024 Civil Works appropriations. Congress allocated a hefty $8.681 billion for the Army Civil Works Program, spreading across various crucial areas like Investigations, Construction, Operation and Maintenance, Mississippi River and Tributaries, and Formerly Utilized Sites Remedial Action Program.
  • USACE Philly District supports Key Bridge collapse response

    In the aftermath of the collapse of the Francis Scott Key Bridge in late March 2024, the U.S. Army Corps of Engineers mobilized and began working with a unified team of federal, state, and local agencies with the goals of assessing the damage and, ultimately, restoring maritime navigation. The challenge has been historic as an estimated 50,000 short tons of steel and concrete fell across the total collapsed span of the bridge.
  • The Corps Environment – Spring 2024 edition now available

    The Spring 2024 edition of The Corps Environment is now available! This edition features diverse initiatives focused on protecting and preserving our environment.
  • Test blast to happen this afternoon at the Kilohana temporary housing site

    KIHEI, Hawai‘i – The U.S. Army Corps of Engineers and its contractors are planning to do a test
  • Huntsville Center’s commander throws first pitch at Trash Panda Armed Forces Game

    Col. Sebastien Joly, Huntsville Center’s commander, and Joshua Gaines, Huntsville Center engineer, each threw out first pitches before the announced crowd of 6,668.