Credit: Photo: Advanced Drainage Systems

Crews installed a watertight drainage system using Nyloplast structures and N-12 corrugated high-density polyethylene pipe—both available from Advanced Drainage Systems Inc.—along Idaho's US 95.
Following Suit in Washington

Now that the revolution has started, remaining state transportation departments will likely look to these examples in determining how to meet their future drainage needs. “The Washington State DOT is always looking to the future and using better products,” said Witecki.

Combined with state DOT approvals, the future may already be here. “The WSDOT approval carries a lot of weight in the state,” said Jay Christiansen, hydraulics designer with WSDOT. “Most city, county, and other agencies look to us as ‘the' approving agency. If a product gains WSDOT approval, they use it.”

Hank Keith, superintendent of Crestline Construction, is hoping for more approvals in Oregon. “I would be more than happy to install both the N-12 pipe and the Nyloplast drainage structures again,” said Keith. “We finished installation three times faster than we do with concrete and steel and with better long-term results. Really, it's a better drainage system.”

Ron Schmidt, manager of Crestline agrees. “One guy can pick up these structures and carry them by hand to the site. It's much easier for the installation crew and it's easier on the bottom line without the cost of machine installation.”

Now that transportation departments are beginning to have a better understanding of the advantages of using alternative materials, they're reaping a benefit private contractors have known for some time: The best solution is the one that fits their needs completely.

Mary Beth Vrees is a writer with Dublin, Ohio-based Wentworth Group International; Tony Radoszewski is president of the firm.