I-70 MoDOT
Noise Abatement Wall

  • Location: City of O’Fallon, Missouri
  • Contractor: MoDOT
  • Size: 24,280 square feet
  • Purpose: To provide noise abatement wall to reduce noise for the homes along the interstate.

About this Project

 As anticipated by the Missouri Department of Transportation (MoDOT), the project to widen I-70 (Route K) in the City of O’Fallon, MO has caused the need for a noise abatement wall to reduce noise for the homes along the interstate. Wieser Concrete was contracted by Millstone Weber to manufacture a total of 24,280 square feet of precast concrete noise walls and posts to run along the north side of the westbound interstate lanes. The individual panels averaged 6’H x 24’L, while the posts were spaced at 25′ on center and were an average of 12′ tall. This was a new noise wall design for our Roxana, IL plant. 

MoDOT Noise Wall by Wieser Concrete
Wieser Concrete Project Profile

We designed a new precast post and longer panel to produce them more efficiently. Both the panels and posts have ashlar stone form-liner on each side. This project was also our first noise wall ever produced for MoDOT. After the I-70 widening project, many locations approached or exceeded the Noise Abatement Criteria in a study conducted by the City of O’Fallon. These areas included four subdivisions and a middle school, of which the Hilltop Manor subdivision was deemed feasible and reasonable for a barrier installation. MoDOT defines reasonableness as the ability for noise barriers to achieve a maximum of 1,300 square feet per benefitted receptor and must provide a minimum of 7 dBA for 67 percent of first-row receptors. The precast concrete products were produced in two months and they were installed in about five days.

MoDOT Noise Wall by Wieser Concrete
MoDOT Noise Wall by Wieser Concrete
MoDOT Noise Wall by Wieser Concrete
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