The scope of work included the use of Water Cad Model Software to evaluate the maximum flow required to maintain proper water storage at the McElvey storage tank farm.

McElvey Transmission Main

Bay County, FL

Creating an Emergency Above Ground Water Main Solution

When Hathaway Bridge was constructed in 2003 to replace the Saint Andrews Bay Bridge, a 24-inch ductile iron pipe was constructed and supported within the bridge spans. In early 2018, a water leak developed in the 24-inch ductile iron transmission main near the east end of the bridge. Under an emergency work order and under contract from Bay County with our design-build teaming partners at Marshall Brothers Construction, we evaluated feasible alternatives to construct a temporary bypass transmission water main that would allow Bay County to assess the extent of the water leak and alternatives for repairs, while at the same time provide a backup water supply.

We were tasked with designing the temporary bypass line to convey peak water demand to the Panama City Beach McElvey storage pump station, evaluate various pipe materials for construction, and develop construction drawings. The proposed alignment for the temporary bypass transmission main included approximately 6,000 feet of water main with a portion of the water line to be buried, but the majority of the pipe to be laid on top of the concrete sidewalk and pedestrian bridge deck along the bridge span. Pipe expansion joints were also incorporated near the bridge expansion joints.

Search Term:
McElvey Transmission Main
  • Bridges
  • design-build
  • Marshall Brothers Construction
  • West Bay
  • Panama City Beach
  • water main
  • Bay County
  • Florida
  • Southeast
  • State/Local
  • site/civil
  • McElvey Transmission Main
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24-inch

existing ductile iron pipe

16-inch

temporary ductile iron pipe

14 days

to complete the design

7.2 feet per second

of maximum velocity

24-inch

tapping saddle and valve

Services

  • Alternative Delivery
  • Site/Civil Engineering

Markets

  • State/Local

Regions

  • Southeast
  • Bridges
  • design-build
  • Marshall Brothers Construction
  • West Bay
  • Panama City Beach
  • water main
  • Bay County
  • Florida
  • Southeast
  • State/Local
  • site/civil
  • McElvey Transmission Main

Location

Bay County, FL

Completion Date

2018

Client

Bay County, Florida

Cost

$100,000
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