Dewberry recently received two awards from the American Council of Engineering Companies (ACEC) of Virginia during the 2020 Engineering Excellence Awards gala.
Dewberry’s raw water transmission main (RWTM) project
for Loudoun Water received an honor award. The 5.5-mile long, 36- to 48-inch
diameter raw water transmission main provides Loudoun Water with a sustainable
and resilient water supply that serves more than 75,000 households in Loudoun
County. The firm exceeded Loudoun Water’s goals, completing its work for just
80% of the approved construction management budget. The RWTM supports an
innovative water banking program allowing water storage in future abandoned
quarries for use during low flows on the Potomac River. The welded steel
pipeline features a robust cathodic protection system and special coatings to
achieve a 100-year lifespan. It includes 12 trenchless crossings to minimize
land disturbance and 20 air-vacuum valve vaults that protect the pipeline from
surges.
The Route 606 Loudoun County Parkway/Old Ox Road
Widening and Reconstruction project earned a merit award. The design-build
project included the reconstruction and widening of Route 606 from the Dulles
Greenway to just south of Dulles West Boulevard from a two-lane undivided road
to a four-lane divided road. A new bridge carrying Route 606 over the Horsepen
Dam auxiliary spillway was designed, the principal spillway (box culvert) was
lengthened, the dam embankment was widened and raised, and the auxiliary
spillway was improved and realigned. A new access point to the National
Oceanographic Atmospheric Administration (NOAA) weather facility, three noise
barriers, and pedestrian facilities were added. Dewberry provided engineering
design services, including roadway, hydraulic, structural, traffic, and
electrical engineering; dam modification design; environmental permitting and
monitoring; engineering field surveys; and construction engineering inspection
for the $119-million project.
