Demolition and site work for a civil project in Alton, Illinois. Conceptual plans call for the demolition of a bridge / tunnel; for site work for a bridge / tunnel; and water / sewer project.

RFP Melvin Price Locks & Dam Direct Acting Cylinder Installation, Lock Wall Grating Replacement, and Handrail Anchorage Connection Rehabilitation Project POINT OF CONTACT: Tracy Tenholder, Contracting Officer - tracy.n.tenholder@usace.army.mil General Site Description Estimated Range $5,000,000-$10,000,000 Melvin Price Locks and Dam is located on the Mississippi River near Alton, Illinois, approximately 21.3 river miles upstream from St. Louis and 200.8 miles above the mouth of the Ohio River. The project consists of a main lock and an auxiliary lock; a dam containing nine Tainter gates; and a fixed submersible dike reaching the Missouri Side of the River. The main lock is 1200 ft by 110 ft with a lift gate at the upstream end and a miter gate at the downstream end of the lock chamber. The auxiliary lock is 600 ft by 110 ft with a set of miter gates at the upstream and downstream ends. Project Scope Description The work will consist of furnishing all labor, equipment, operators, supervision, supplies and materials, and incidentals necessary to perform the Melvin Price Locks & Dam Direct Acting Cylinder Installation, Lock Wall Grating Replacement, and Handrail Anchorage Connection Rehabilitation Project. The work is anticipated to be accomplished with traditional river marine construction equipment, such as floating plant and barge mounted crane, and staged inside the auxiliary lock chamber. The structural work on the project includes but is not limited to the following: Removal of existing grating and framing, demolition of existing concrete, placement of new concrete, and installation of new grating and framing at the existing auxiliary lock miter gate machinery recesses to create new miter gate machinery recesses for the new direct acting cylinder. Installation of new direct acting cylinder, including anchorage to concrete at the new auxiliary lock miter gate machinery recesses. Contractor must be able to perform work in accordance with AWS D1.5 and hydraulic structural steel specifications. Modifications to existing miter gate leaves to receive new direct acting cylinder strut arm, including careful demolition of existing upstream top girder flange, removal of existing strut box, and installation of new strut box. Contractor must be able to perform work in accordance with AWS D1.5 and hydraulic structural steel specifications. Removal of existing grating and framing, demolition of existing concrete, placement of new concrete, and installation of new grating and framing at auxiliary lock culvert valve pits and bulkhead slots. Protection and reattachment of existing mechanical and electrical systems in auxiliary lock culvert valve pits during construction. Removal of existing guardrail system for reuse, demolition of existing concrete and embedded metal sleeves at base of existing guardrail posts, placement of new concrete, and reinstallation of existing guardrail system with new base plate at lock walls and guide walls, excluding the bridge and dam. Intent is to replace all embedded guardrail post connections with surface-mounted connections. The mechanical work on the project includes but is not limited to the following: Demolition of existing miter gate machinery including the removal of the hydraulic cylinder assembly, rack gear, sector gear assembly, strut arm, roller guide assemblies, and associated lubrication system. Removal and relocation of bubbler system compressed air pipe to the new miter gate machinery recess. Demolition of hydraulic power systems for the culvert valve and miter gate systems. Demolition will include removal of pipes, fittings, ball valves, surge relief valves, counterbalance valves and directional control valves. Installation and testing of new hydraulic power system for the miter gate and culvert valve including installation of pipe, hydraulic hoses, ball valves, surge relief valves, counterbalance valves, fittings, and the miter gate directional control valves. Disassembly, inspection, and rehabilitation of six existing government furnished direct acting cylinder assemblies. Disassembly, inspection, and rehabilitation of eight existing hydraulic power units powering the culvert valves and miter gate machinery on the auxiliary lock. Rehabilitation will include, but not be limited to replacement of all wear parts, rebuild of pump, and draining and cleaning of the oil reservoir. The electrical work includes but is not limited to the following: Removal and replacement of various miter gate limit switches and associated cabling and conduit Removal and replacement of hydraulic fluid line pressure transducers and associated cabling and conduit Installation and wiring of hydraulic cylinder integrated measuring system unit. CAPABILITY STATEMENT SUBMITTAL