Tributary 7 of Potash Brook flows through the Butler Farms and Oak Creek Village (OCV) neighborhoods. The brook passes beneath City streets via culverts in four locations before flowing into the Wheeler Nature Park located to the north of the neighborhood. The OCV Culvert Replacement project involved replacing the two existing culverts on Moss Glen Lane in the OCV neighborhood.
When the culverts under Moss Glen Lane were originally designed, permitted and constructed they met the current requirements for culvert sizing. However, over time these standards have evolved and the original culverts are considered undersized relative to the standards in use today. Under current standards, new culverts must have sufficient capacity to pass stream flow during a 25-year storm event (4.0 inches of rain in a 24 hour period).
This project included replacing the existing corrugated metal pipe culverts in both locations under Moss Glenn Lane with precast concrete box culverts that are 3.5 feet tall by 16 feet wide. The new culverts provide sufficient capacity to allow the stream to pass under the road without overtopping during the 25-year storm event. This project improves stream health and reduces the chance of flooding in the neighborhood during large storm events. It also improves the ability of aquatic organisms to move in the stream.
Best Management Practices
Replacement of undersized and aging drainage infrastructure with new appropriately sized drainage infrastructure.
Installation of the new culverts was completed in 2017.
This project has received $300,000 in funding support from the Transportation Alternatives Grant Program administered by VTrans. The remaining project costs will be paid using stormwater utility capital project funding.
Page last updated: 3/9/18