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County Line Road Improvements

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Northeast Longmont Capital Projects


Overview

semi truck on County Line Road before improvementsImprovements have been identified by the City of Longmont that are intended to increase both the safety and operation of County Line Road from 9th Avenue to 17th Avenue.

Goals and Proposed Improvements

Proposed improvements include limited widening of County Line Road from 17th Avenue to Spring Gulch #2 (near Trail Ridge Middle School) to accommodate on-street bike lanes and left-turn lanes along the entire segment. Intersection improvements will be made where needed, and sidewalks will be added along the west side of County Line Road.

In addition to making County Line Road safer for all users, these improvements also will increase the multimodal transportation options available on County Line Road.

The bike lanes and sidewalk improvements connect to the City's Envision Longmont Multimodal and Comprehensive Plan's principle of "A Complete, Balanced and Connected Transportation System," as well as the Longmont Sustainability Plan's Transportation topic area.

On-street Bike Lanes

Widened paved shoulders will allow for the addition of on-street bike lanes between 17th Avenue and Spring Gulch #2.

Sidewalk Improvements

Pedestrian improvements will include trail connections at Jim Hamm Nature Area. Sidewalks will also be installed along the west side of County Line Road from 17th Avenue to Spring Gulch #2. 

Left-turn Lanes & Intersection Improvements

Left-turn lanes will be installed for the entire length of the project.

The intersection of Sunshine Avenue and County Line Road currently features a right-in/right-out channeling island. This intersection will be improved to allow right-in, right-out and left-in turning, known as a 3/4 intersection.

The intersection of Rustic Drive and County Line Road (which is currently going through the City’s development process) will also receive a 3/4 intersection to allow for right-in, right-out and left-in turning.

The intersection improvements are being made to improve safety at both intersections. The new 3/4 intersections mean that:

  • A vehicle traveling north on County Line Road can make a left turn into either Sunshine or Rustic (using a left-turn lane being installed as part of the project)
  • A vehicle traveling south on County Line Road can turn right onto either Sunshine or Rustic
  • Vehicles traveling on either Sunshine or Rustic can only turn right onto County Line Road
  • Residents will be able to use Armstrong Drive to turn onto eastbound 17th Avenue where they can make a left turn to head north on County Line Road.

17th Avenue Intersection Improvements

Underground infrastructure required for a traffic signal system at the 17th Avenue intersection will be installed with the current roadway project. This is being done in anticipate of a future traffic signal at the intersection.

Currently, the intersection does not meet the requirements for a traffic signal. Learn more about those requirements in the Frequently Asked Questions >

Additionally, pedestrian access improvements will be made at the 17th Avenue intersection. Raised pedestrian refuge islands will reduce pedestrian crossing distance and allow pedestrians to cross 17th Avenue in stages.

Schedule

County Line Road Improvements info board

Design work for the improvement project has been completed.

County Line Road Improvements were anticipated to be coordinated with Phase 2 of the Spring Gulch #2 Greenway project. Delays in the utility relocation process have postponed the start of the County Line Road construction work.

Solicitation for construction bids is scheduled to start as soon as overhead utility lines in the work area have been relocated by the provider. Currently, construction of improvements is anticipated to begin in early 2020.

Once construction begins, a phased approach will be used that will allow one lane of traffic to be maintained in each direction during the project. Drivers should anticipate periodic short-term delays, though, for construction vehicles and work in the traffic lane.

Public Notification

An open house to share design plans and answer questions about County Line Road Improvements was held on March 20. Nearby residents received invitations to the open house, and the event was promoted through the City of Longmont website, calendar and social media accounts. A second public meeting to share information about the project was held on April 25.

View a list of questions residents raised at the April 25 meeting, along with staff responses >

Neighborhoods and drivers will be informed of road construction activities and conditions through methods such as changeable message signs, construction signs, news releases, and City social media accounts.

Funding

Cost for these County Line Road Improvements will be approximately $3 million. Funding will come primarily from the City's 3/4-cent Street Fund Sales and Use Tax.

Contact

Project Manager Tom Street

 

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