Description
The State of Minnesota, Department of Natural Resources, is seeking proposals for the design, fabrication, and delivery of one modular, relocatable, temporary vehicle bridge system. The bridge must provide a minimum clear span of 34 feet and a clear roadway width of 14 feet, with no intermediate supports or in-stream piers. The system must be safe to erect and use, straightforward to maintain, and supported by complete sealed calculations, drawings, and an operations & maintenance manual. Responders must have demonstrated experience in bridge design and civil engineering with modular temporary bridges of similar span and capacity.
Key requirements include:
• A durable, reusable bridge system comprised of modules that can be transported on legal highway trailers, assembled and disassembled using conventional logging or construction equipment, and stored between uses without degradation
• A clear span of 34 feet and a clear roadway width of 14 feet, with no intermediate supports or in-stream piers
• Design and load rating in accordance with AASHTO LRFD Bridge Design Specifications
• Provision of a sealed calculation package and MnDOT load rating forms
• Compliance with materials and fabrication requirements, including structural steel or pressure-treated timber, and welding and inspection requirements
• Inclusion of all connection hardware, pins, bolts, lifting lugs, and guardrail components necessary for assembly
• Provision of spare fastener kit and deck planks/panels
• Compliance with environmental and safety regulations