Published jointly by the Federal Highway Administration and the National Concrete Bridge Council
Dave Zanetell, Federal Highway Administration High performance concrete (HPC) is at the core of the successful construction of the Hoover Dam Bypass. The nearly 5-mile (8-km) long project includes eight separate and significant bridges including the centerpiece Colorado River Bridge
Read More >>The Colorado River Bridge at Hoover Dam—Overview
Jeff St. John, Obayashi/PSM Joint Venture In early-to-mid 2005, the joint venture of Obayashi Corporation and PSM Construction USA began assembling on the project site of the Colorado River Bridge. One of the chief topics of discussion amongst the team
Read More >>The Colorado River Bridge at Hoover Dam—Concrete Production and Placement
John Horn, Volkert Construction Services In August 2005, Hurricane Katrina decimated the Gulf Coast and nearly destroyed the 5.5-mile (8.9-km) long twin-span, I-10 bridges that connect South Mississippi with New Orleans across Lake Pontchartrain. The existing structures were quickly repaired
The following letter was received concerning the article titled “Measurement of Air Content in Concrete,” which was published in HPC Bridge Views, Issue No. 61, May/June 2010. EditorThe article describes various methods for measuring the air content of concrete. I think
Gina Ahlstrom, Federal Highway Administration In August 2008, a task group was formed under the American Association of State Highway and Transportation Officials (AASHTO) Subcommittee on Materials to review current specifications pertaining to alkali-silica reactivity (ASR). The task group was
Read More >>AASHTO Adopts Recommended Practice on Alkali-Silica Reactivity