River Lock Rehab: A Winter's Tale

by James T. Passage, Project Mgr.; Harza Engineering Co., Chicago, Ill.,
John H. Plump, Jr., Project Mgr.; Design Branch, St. Paul District, U.S. Army Corps of Engineers, St. Paul, Mo.,


Serial Information: Civil Engineering—ASCE, 1984, Vol. 54, Issue 5, Pg. 44-47


Document Type: Feature article

Abstract:

Lock & Dam �1 on the Mississippi River between Minneapolis and St. Paul had deteriorated badly but the U.S. Corps of Engineers determined that replacement with a new structure was not feasible financially. Rehabilitation of one lock cost less than a quarter of estimated replacement costs, but keeping it open during normal shipping seasons meant that construction was done during the winters. Controlled blasting to remove portions of the old concrete, management and scheduling techniques, and use of precast concrete speeded construction to meet the time limitations.

Subject Headings: Locks (dam) | Winter | Rivers and streams | Rehabilitation | Precast concrete | Locks (waterway) | Ecological restoration

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