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17th and Main Storm Drainage Improvements

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Project Update

In early June, the contractor will begin installing storm sewer main line at the northeast corner of 17th and Main. This work will proceed north along the east side of Main Street for several weeks.


Overview

The existing storm drainage system along 17th Avenue east of Main Street and along the east and west sides of Main St north of 17th Avenue leads to drainage issues and standing water after large storms.

That existing system is beyond its useful life and insufficient to support the existing intersection. It will be replaced and additional storm drain inlets will be installed.

Goals and Planned Improvements

Aging storm sewer infrastructure is being replaced and additional storm drain inlets are being added. This work includes installation of storm lateral crossing, connecting to the existing storm sewer system, and installing manholes, inlets and additional storm pipe.

Schedule

Construction work began in late April 2020 and is anticipated to continue through early September 2020. Project work will generally take place on weekdays during daytime hours.

At the same time as this project, the Colorado Department of Transportation (CDOT) was performing intersection improvement work at 17th and Main. The CDOT contractor has completed their work at the 17th and Main intersection. Learn more about CDOT's intersection improvement project >

Traffic Impacts

Travelers can expect continued closures of the right lanes of northbound Main and westbound 17th throughout the remainder of the project as crews install the additional storm sewer system. Project work will generally take place on weekdays during daytime hours.

Project Costs and Funding

Project costs are estimated at $1.3 million. E-Z Excavating, Inc. of Frederick has been awarded the contract for this capital improvement project. Storm drainage projects such as this one are paid for out of the City of Longmont’s Storm Drainage Fund, which is financed by monthly residential and business stormwater rates.

Contact

Project Manager Allan Bryning

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