Main Street Flood Control Project

Project Description:

Over the last few years there have been a few large rainfall events on the Main Street drainage basin that have caused significant runoff events and flooding along Main Street. The two most recent flooding events occurred on July 13, 2018 and August 11, 2018.

Washington City hired Bowen Collins & Associates (BC&A) to analyze the existing storm drainage system within the Main Street drainage basin and develop recommendations for infrastructure improvements to mitigate this flooding along Main Street. Preliminary flood mitigation alternatives were presented to the Washington City Council in a work meeting on August 21, 2018.

At the meeting the City Council requested the BC&A evaluate the following three flood mitigation alternatives further:

  • Alternative 1 – Construct new detention basins at Main Street and Buena Vista Blvd
  • Alternative 2 – Construct road and storm drain improvements along Main Street
  • Alternative 3 – Construct a new flood channel from the intersection of Main Street and Buena Vista Blvd to Mill Creek

This project addresses recommendations from Alternative 2 and includes reconstruction of Main Street to prevent local storm event flooding south of I-15. The project will use the existing Main Street right-of-way to incorporate curb and gutter, inlets to storm drain pipelines, sidewalks, and modifications to the existing roadway cross-section.  The City held a public open house and received comments regarding the proposed project on April 4.  A link showing the concept of the selected road cross-section is below.

Update 12-2-2019: The project is on schedule, the bid opening is being held on Thursday December 5th with award at the December 11th council meeting. We anticipate work to begin sometime in December.

Update 12-24-19: The project was bid and awarded to Interstate Rock. Work will begin on January 7th with a completion date of July 1, 2020.

Update 1-8-2020: Interstate Rock Product, Inc.  has begun construction on the Main Street Flood Mitigation & Improvements Project.  This project will include work on Main Street from Telegraph Street to Buena Vista Blvd.  Interstate has started work and is focusing on the 300 North and 400 North blocks.  They are digging test holes to locate existing utilities in the roadway.  These test holes will help them as they start placing underground improvements as part of the project.  They hope to begin placing underground improvements next week.

Update 01-21-2020

This week the contractor will be focusing on finishing potholing for existing utilities, installation of ne gravity feed irrigation. There will be temporary road closures and detours through the project.

Update 01/30/2020

The Contractor is making good progress on the Main Street construction.  Currently they are working on constructing the new gravity irrigation system to replace the old pipes and ditches that carry irrigation water.  Something new this week is that the Contractor has started to install storm drain pipe to help carry stormwater.   The Contractor will again need to trench across Main Street.  Please avoid the project area if possible.  If you cannot avoid the project area please drive slowly and follow the detour routes.  The detours are put in place to keep people safe.

 

Update 02/24/2020

The Contractor is continuing work on the gravity irrigation system. They are also installing culinary water and pressurized irrigation water main from 400 N to the south. New culinary water services are being installed as well as new irrigation services for future use. Construction will be going on in multiple areas along Main Street from Telegraph to Buena Vista.  Due to the multiple work locations, Main Street will be closed to through traffic from Telegraph to Buena Vista.  Residents that live on Main Street should drive slowly and be aware of construction equipment as they access their homes.  Residents and Contractors safety is the top priority. 

Update 03/09/2020

The Contractor has finished the gravity irrigation system and it is now in operation. They are continuing to install culinary water and pressurized irrigation water mainlines and services. Construction will require that the segment of Main Street under I-15 to close.  Be prepared to find alternate routes to get from one side of I-15 to the other.  Residents that live on Main Street should drive slowly and be aware of construction equipment as they access their homes.  Residents and Contractors safety is the top priority.

 

Update 03/26/2020

The Contractor is over half way through installing culinary water and pressurized irrigation water mainlines and services.  While they are installing the culinary water and pressurized irrigation water mainlines they are also installing conduit for communication lines.  When the culinary water and pressurized irrigation water mainlines are completed the Contractor will then move up Main Street to the north side of the Freeway to start installing a new sanitary sewer line.  This phase of the construction will require that the segment of Main Street under I-15 to close.  Be prepared to find alternate routes to get from one side of I-15 to the other.  Residents that live on Main Street should drive slowly and be aware of construction equipment as they access their homes.  Residents and Contractors safety is the top priority.

Update 4/1/2020

The Contractor has installed the culinary water and pressurized irrigation water mainlines along Main Street from I-15 to 100 North.  They hope to be down to Telegraph Street by the end of the week.  After they are finished to Telegraph they will then move up Main Street to the 400 North to start installing a new sanitary sewer line.  It is anticipated that the section of Main Street that runs under I-15 will close as early as Monday 4-6-20 to install the Sanitary Sewer Line.  Be prepared to find alternate routes to get from one side of I-15 to the other.  Residents that live on Main Street should drive slowly and be aware of construction equipment as they access their homes.  Residents and Contractors safety is the top priority.

 

Schedule:

Design Completion: November 2019

Construction Start: January 2020

Construction Complete: June 2020


Project Information:

Exhibits-MAIN 6-18-2019-1.pdf - (pdf 11.04 MB)



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