AASHTO LRFDCONS-4, LRFD Bridge Construction Specifications, Fourth Edition (2017), contains 33 sections on the construction of highway bridges and is used together with the LRFD Bridge Design Specifications. The sections begin with structure excavation and backfill, removal of existing structures, and temporary works, then continue through driven foundation piles, drilled shafts, ground anchors, and earth-retaining systems. Concrete structures, reinforcing steel, and prestressing follow, along with steel structures, steel grid flooring, and painting. Stone masonry, concrete block and brick masonry, and timber structures with preservative treatment are also specified. Sections typically address working drawings, materials, construction requirements, and measurement and payment. The specifications are intended for bridge contractors, construction engineers, and agency staff who administer bridge construction contracts.