33rd street outfall phase 4 - denver...phase 4 of the 33rd street outfall project will increase...
TRANSCRIPT
Phase 4
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BASIN RUNOFF
We’re installing a stormsewer system with a five-year capacity to service Five Points, Whittier, City Park West and Cheeseman Park.
Our goal is to improve drainage during storm events and address areas where significant flooding could occur.
WHAT
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BLAKE
33RD
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TMARR
We’re installing a storm sewer system with a five-year capacity to service Five Points, Whittier, City Park West and Cheeseman Park.
Our goal is to improve drainage during storm events and address areas where significant flooding could occur.
This project includes additional improvements to connecting systems upstream in areas to the east, which are also at increased risk of flooding.
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This is a map of the Phase 4 project and all steps included.
WHAT
36th & Walnut
Welton & Washington
Welton & 27th
WHY
The new storm system will carry storm runoff and snowmelt safely to the South Platte River, reducing the risk of damage to residential and commercial properties.
These are some examples of the worst flooding in the neighborhood.
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FLOODING DEPTH IN100-YEAR EVENT
6” to 12”12” to 36”+
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WORSTINTERSECTIONS
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MARRTR IN LLUTHHER KING JJR
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These are photos of some of the existing 100-year-old brick storm vaults — they are severly undersized and contribute to flooding issues.
Phase 4 of the 33rd Street Outfall project will increase capacity throughout the whole system, taking pressure off of older structures like these.
WHY
The existing storm system underneath the streets in these neighborhoods is severly undersized — some are only 18 inches wide, which contributes greatly to flooding.
The new box culverts we will be installing are 10 foot wide by 8 feet deep — that means almost 43 times as much water can flow through this new and improved system.
EXISTING 18" CIRCULAR STORM DRAININ MLK JR BLVD (CROSS-SECTIONAL
AREA = 1.8 SQUARE FEET)
NEW 10'x8' CONCRETE BOX IN MLK JRBLVD (CROSS-SECTIONAL AREA = 78.0
SQUARE FEET)
EXISTING SYSTEM NEW 5-YEAR SYSTEMTWO 6'-TALLCONSTRUCTION
WORKERS
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To safely perform this extremely
HOW complicated construction, we will need to close this intersection for approximately 3 months. We will be providing ample warning, workarounds and detour route
This project is very information repeatedly throughout large and complex, and the project.this will cause impacts — which we will work Our goal is the safety of the to minimize. traveling public, and that of the
residents in the surrounding As you can see, the neighborhood — hence the structure underneath necessity of this closure.the intersection of Downing and MLK is incredibly massive and complex.
DOWNING STREET, LOOKING SOUTH
PROPOSED TRENCH
HOW
In addition to this massive structure that we are installing, we have to navigate around and relocate an incredibly dense network of utilities.
PROPOSEDPRECAST STORM DRAIN
EXISTINGSANITARY SEWER
WATER LINE
EXISTINGSTORM DRAIN
EXISTINGSANITARY SEWER
EXISTINGFIBER OPTIC
GAS LINE
20 TO 40 FEET WIDE
27
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LOCAL DETOURS
REGIONAL DETOURSWHERE
Detours will be in place throughout the duration of the project. Signage will clearly define and direct the detour routes, and we will be sending out weekly impact / detour maps in our email updates — so be sure to sign up for these crucial emails.
Access to businesses and residents inside the project will always be open.
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I-70 PROJECT
WHERE
The project team is actively coordinating with the I-70 project engineers — no conflicts between the two projects are currently known.
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WHEN
Phase 4 of the 33rd St. Outfall project will take approximately32 weeks. Each project segment is shown here, with approximate timeframes for each segment.
A1
PPROXIMATELY6 WEEKS
A2
PPROXIMATELY14 WEEKS
A3
PPROXIMATELY12 WEEKS(PERFORMED BY
MULTIPLE CREWS)
Stay informed!
Visit the project website:denvergov.org/33rdStreetOutfall
Call the project hotline at 720.295.9761 for weekly updates,
and to leave a message with questions or concerns.
Other contacts:
David Shaw, Project Manager303.446.3456 / [email protected]
Dustin Clark is the Project Superintendent for the contractor,Concrete Works of Colorado.
303.419.3837 / [email protected]
Thank you!Please stick around for a 1-on-1questions and answer session.