Highways & Roads
Engineered noise barriers, retaining walls, and safety hardware tested for the demands of modern transportation infrastructure.
Learn more about Highways & RoadsProject Overview
The heavily traveled highway to the Anchorage Airport bordered a quiet community that enjoys the scenic views of the local Chugach Mountain range. To alleviate the highway noise for the nearby residential neighborhood, EKHO provided a noise wall solution that would not take away from the scenery.
OwnerAlaska Department of Transportation
ContractorWilder Construction Company
Design / BuildAlaska DOT & Land Design North Inc. & Durisol Ltd.
A Scenic Highway Challenge
Incorporating many unique design features, the lower portion of the wall was completed in EKHO panels with a natural stone pattern. They were complimented well by the EKHO's post facings that connected directly to the galvanized steel posts ground-mounted and structure-mounted in some areas.
The upper portion of the wall utilized EKHO's Transparent Noise Barriers as large windows that would allow light and the stunning mountain views in all day long. With variations of clear and tinted panels, sections of the wall were complete with integrated light fixtures so to illuminate a bike path.
Exceeding Acoustic Project Requirements
Interestingly, the ADOT had originally specified the entire wall as a 60% absorptive noise wall, with a light transmittance minimum requirement of 80%.
The required Noise Reduction Coefficient (NRC) could not be achieved with a fully transparent wall. And so, the EKHO team proposed the wall design as you see it today.
With the incorporation of the EKHO noise absorbing base, an NRC of 0.80 could be reached (well beyond the 0.60 required). And, no views were compromised in the newly proposed. In fact, the Transparent panels contributed to the noise absorption AND allowed a whopping 93% light transmission.
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