Filter Icon
  • All Articles
  • ! Без рубрики
  • 1
  • 10 pachka
  • 2
  • 5
  • 6
  • 8
  • asian brides
  • asian dating
  • asian dating and marrige
  • asian women dating
  • Awards
  • beautiful women
  • best brides
  • Best Countries To Meet A Wife
  • Best Country To Find A Wife
  • best dating reviews
  • best dating sites
  • best interracial dating apps
  • best interracial dating sites
  • best mail order brides
  • Best Mail Order Brides Websites
  • Best Reviewed Dating Sites
  • best senior dating sites
  • Best Website To Find Women
  • blog
  • Bookkeeping
  • bride catalogs
  • brides
  • bukmacherzy legalni
  • Bukmacherzy Legalni w Polsce
  • Business
  • buy a bride online
  • casyno
  • chinese dating sites
  • chinese wife dating
  • chinese women dating
  • Conference
  • dating
  • Dating A Foreigner
  • Dating Agencies In Ukraine
  • Dating Asian Women
  • dating critic
  • Dating Foreign Women
  • dating over 40
  • dating reviews
  • dating sites
  • Dating Sites International
  • dating sites online
  • Dating Someone From A Different Country
  • Dating Tips
  • dating tips for men
  • dating, sex
  • dj tools guide
  • Dll
  • Download Stock Firmware
  • Driver Updater Software
  • Education
  • Expo News
  • Extentions Info
  • Fall In Love With Someone You Don't Share A Common Language
  • Feature
  • filipino brides
  • filipino women for marriage
  • find a bride
  • find a bride online
  • Find A Woman To Date
  • find brides online
  • FinTech
  • Firmware Download
  • foreign wife dating
  • Forex Trading
  • Game Emulator Roms For Android
  • ggbet
  • hookup sites
  • hot women
  • How Much Is A Russian Mail Order Bride
  • How To Date Someone Internationally
  • How To Have A Small Wedding
  • Industrial Fabrics Foundation
  • Install Drivers
  • Internet Bride
  • interracial dating
  • japanese brides
  • japanese mail order bride sites
  • japanese women
  • kasyno
  • klen
  • latin brides
  • latin dating sites
  • latin mail order brides
  • latin mail order wives
  • latin wife dating
  • latin wives
  • mail order bride
  • mail order bride services
  • mail order bride usa
  • Mail Order Brides
  • mail order brides catalog
  • mail order brides dating
  • mail order brides for sale
  • mail order brides pricing
  • mail order brides usa
  • mail order wife
  • mail order wives
  • Mailorder Brides Cost
  • Markets
  • Marriage Certificate Requirements
  • Marriage Certificate Versus Marriage License
  • meet brides online
  • meet mature women online
  • Meet Single Women
  • meet women
  • Meeting Russian Women
  • News
  • news, relatipnshop
  • online brides
  • online dating
  • online dating sites
  • order a bride online
  • order a wife onine
  • Overseas Long Distance Relationship
  • Pokemon Emerald Free Downloads
  • polish mail order wives
  • Press Release
  • Pretty Latina Girls
  • Products
  • senior dating
  • sex chat
  • sex sites
  • Should A Guy Pay On The First Date
  • Single Frauen Treffen
  • Single Women Dating
  • Single Women For Marriage
  • singles
  • singles dating sites
  • Software development
  • Standards And Expectations In Relationships
  • Successful Interracial Marriages
  • sugar daddy sites
  • Swatches
  • thai mail order wives
  • Ucategorized
  • Ukrainian Women Characteristics
  • Uncategorized
  • Uncategorized1
  • uncategorized4
  • vit
  • What's New?
  • Where To Find Single Women
  • whiskey reviews
  • wife finder
  • Windows
  • women for marriage
  • Агробизнес
  • Финтех
  • This page was printed from

    Geotextiles improve South Carolina highway

    Geosynthetics, Markets, Projects | December 1, 2008 | By:

    Geotextiles cut costs, protect the environment and increase safety on one of America’s deadliest highways.

    The warm summer sunshine, winding blacktop roads and pristine saltwater marshes of South Carolina are more often associated with car commercials than they are with car crashes. But in 2005, the South Carolina Department of Transportation (SCDOT) recognized U.S. Highway 17, a heavily traveled road in the eastern part of the state, as one of the deadliest roads in the nation. From January 1997 through February 2005, nearly 1,000 automobile accidents, including 33 fatalities, were recorded. The long-awaited U.S. 17 widening project was designed by state and county officials to improve safety for a stretch of highway from Gardens Corner to the Combahee River. The project became a priority for the SCDOT Commission after a series of fatal crashes.

    Also known as the Ocean Highway, U.S. 17 runs 1,189 miles along the southeast coast from Virginia to Florida. More than 200 of those miles pass through South Carolina. Previous construction projects in the state improved 173 of those miles, but a 6-mile stretch of heavily traveled road from Beaufort County to Colleton County was left unimproved. In 2004, funding was provided to finish the highway project. To stay within budget and provide a safe and long-lasting road, the SCDOT turned to geotextiles.

    Geotextiles lower highway expansion costs

    The project is straightforward: the two-lane highway is being expanded to a four-lane highway, in three phases. The unique setting and budget constraints are what make this a challenging project. SCDOT Project Manager Chris Hernandez says the uniqueness of the area makes it vital to protect its natural beauty. Designers looked for ways to create a long-lasting road that would have little impact on the environment.

    The project was divided into three phases to accelerate construction and reduce the impact on motorists. Construction has begun for the three miles in Phase 1 and two miles in Phase 2; the preliminary design is currently underway for Phase 3. This 6-mile design and construction carries an estimated $80 million price tag and will have a significant impact on motorists. Project designers chose a woven polypropylene geotextile from Thrace-LINQ Inc., Summerville, S.C., to assure that no premature maintenance during the life of the road would be necessary.

    Because most pavements fail prematurely due to base contamination and the subsequent loss of strength and drainability, prudent designs today achieve quality construction by starting with a separation/stabilization geotextile beneath the road. The geotextile lowers initial project costs and reduces the need for future road maintenance.

    For the upgraded U.S. 17, two lanes of traffic in each direction are separated by a 100-foot wide median. Because of the weak, silty subgrade and the potential for high precipitation and groundwater levels in this marshy region, the geotextile was placed on the prepared subgrade. The road base aggregate was then placed directly onto the geotextile for improved stability and drainage.

    The geotextile layer enabled the permanent separation and filtration of the subgrade and base aggregate to keep the subgrade fines from migrating up into the aggregate base while allowing the base layer to drain. This important function maintains the long-term strength and drainability of the aggregate base. In addition, the added layer enhances the stabilization of both the subgrade and the base aggregate through confinement and local reinforcement.

    The design and cost benefits gained from using a geotextile are impressive. The geotextile layer used for this project costs no more than 1-2 inches of aggregate and provides significant life-lengthening and maintenance-saving qualities to the road. Weston Newton, chairman of Beaufort County Council and the Beaufort Country Transportation Advisory Group, says the widening of this stretch of U.S. 17 has been a priority for Beaufort County for some time and that the cost-effective long-term vision of this project is what made it possible.

    Protecting the environment

    U.S. 17 cuts through the lowland area known as the ACE Basin, where the Ashepoo, Combahee and Edisto rivers converge and meander past old plantation homes, cypress swamps and tidal marshes. This valuable habitat provides food and shelter to hundreds of different plants and animals. Additionally, the low country basin is one of the largest undeveloped estuaries on the East Coast. State and county authorities naturally wanted to preserve its pristine nature during reconstruction of the highway and in the realized design.

    Bald eagles, short-nosed sturgeon, loggerhead turtles and other endangered species are among the wildlife that call this area home. The nearby Nemours Plantation also protects a large 9,800-acre area of diverse habitats including remnant rice fields, fresh and brackish water marshes, pine groves, hardwood forests and large stands of cypress trees.

    In an effort to maintain the integrity of the habitat, part of this project will include a 100-foot median to preserve valuable tree canopies, says Hernandez.

    “We did a tremendous amount of tree surveys because this area has a large number of significant and specimen oak trees,” he says. “We made a commitment to save as many of those as possible.”

    Along the route, engineers will be installing several guardrails and possibly tree wells, which stabilize trees and protect their root structure. Silt fencing is also being installed, which will protect the area marshland by providing erosion control, Hernandez says.

    To allow animals to continue to migrate through the wetlands, two 100-foot flat slab bridges will be erected. Informally named “critter crossings,” these thoroughfares will be used by snakes, deer, armadillos and alligators.

    Former SCDOT project manager Wilson Elgin oversaw the development of the environmental documents and permitting at the beginning of the project.

    “I think it’s a worthwhile project because it addresses safety as well as the environmental concerns,” Elgin said.

    The agency coordination team included several state and federal agencies, such as the Environmental Protection Agency, U.S. Geological Survey, U.S. Fish and Wildlife, U.S. Department of Defense, and a local presence, including the ACE Basin Task Force.

    Jake Kulju is a freelance writer based in St. Paul, Minn. Jaclyn Deter of VantagePoint, Greenville, S.C., contributed to this article.

    Share this Story

    Leave a Reply