Client: Barletta Heavy Division
Contract Value: $200 Million
Description: Geometric and Survey Support for Pre-stressed Concrete Viaduct Construction

As part of Boston's massive Central Artery/Tunnel Project, Barletta Heavy Division had the contract to construct the roadways that would connect Logan International Airport to several major highways in East Boston. Included in the project were six cast-in-place concrete viaducts totaling nearly a mile in length. In support of this work, Civil Geometrics provided survey data for structure layout and grading including plan layout and cambered digital terrain models of the structures. This information drove virtually all survey operations on the project and was critical to one of the more challenging tasks, the computation of heights for the 8,000 shoring legs that comprised the falsework on which the viaducts would be built. A unique marriage between CAD layouts of the shoring and digital terrain models of the structures enabled us to easily generate the exact configuration of each shoring tower and the required settings of its adjustment screws. As is often the case, the real savings comes not from savings in engineering effort; rather it comes from the increased efficiency of operations resulting from careful information generation and application.