The prefabricated concrete beams of a 74-foot-long bridge reconstructed this summer in Stowe, Vt., are cracking. The cracks have been filled with epoxy and Richard Tetreault, chief engineer at the Transportation Agency, says there's no near-term danger of collapse. However, he is worried that its lifespan could be less than the expected 100 years.
A new type of concrete capable of repairing its own cracks has the potential to significantly lower the cost of maintaining a structure, experts say. Instead of fracturing as it ages, the concrete creates hairline cracks that heal with the help of light rain. The material now costs three times as much as traditional concrete, but experts say the higher expense is recovered because less maintenance is required. They also say the bendable concrete eliminates the need to install devices to counter seismic activity.
GC Constructors, a joint venture of contractors commissioned to replace the Highway 90 Bridge over Biloxi Bay in Mississippi, has won a $5 million early completion bonus for finishing the first two lanes of the bridge before the Nov. 13 scheduled completion date. The completion was less than 18 months after the contractor received the notice to proceed, and the rest of the bridge is expected to open ahead of the April 16 completion date.
Hotel developer Tyler Hospitality has purchased a development site in Brooklyn, N.Y., for $11.9 million and on which it plans to build a 14-story, 250-room Holiday Inn. The company is currently building a 300-room hotel in Times Square and another close to JFK airport.
Developer Sheldon H. Solow has agreed to set aside hundreds of apartments for low-income and working-class tenants in a high-rise development proposed on a former Con Edison property on the East River in New York City. Solow bought the land from the power company in 2000, and the proposed project would include a 1.5-million-square-foot office tower and six residential towers.