The Louisville, Ky., district of the Army Corps of Engineers allowed resumption of Ohio River traffic through the 1,200-ft Markland Lock chamber on March 1 after an expedited 155-day, $6-million emergency repair operation. Corps crews worked two 12-hour shifts each day through “wretched weather conditions to get this lock back in operation,” says Col. Keith Landry, district commander. A malfunctioning control-valve solenoid is blamed for allowing excessive water flow that wrenched one of the chamber’s 450-ton leaves from its mountings and damaging its partner during a locking operation on Sept. 27. Corps employees Sean Bennett (front) and Charles Smith endured
The market is generally healthy and steadily growing, and margins are up for large specialty contractors. Further, advances in design tools and owner demand for collaboration are giving subcontractors a seat at the table early on in projects.