Link to JC-73 Public Meeting Presentation PDF 772 MB - Jeffco

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Drone Footage: https://youtu.be/boJqkqZ1L-Y

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Project Goals: • Improve connectivity for bicycles

and pedestrians.

• Reduce future traffic congestion.

• Improve safety

• Enhance accessibility toDowntown Evergreen with additional parking and shared-use paths.

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Bicycle and Pedestrian Facilities • Narrow shoulders • No bike lanes • Minimal sidewalks at the north and south end of project area • Stairs to active roadwayshoulders • Social paths on top of existing rock walls

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Parking

• Gravel lots • No delineated parking

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Deficient Roadway Safety Features

• Rock outcroppings limit driver sight distances • Insufficient turn lanes for properties and approach roadways • Steep roadside embankments

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Corridor Crash History January 1, 2014 through December 31, 2018

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Looking North Towards Downtown Evergreen

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• Increased left-turn lane storage forBuffalo Park Road. • Lengthen merge area for Northbound JC-73 lane drop.

• Maintains existing driveways. • Provides designated left turn lanes to properties. • Minimizes impact to creek. • Lengthen merge areafor Northbound JC-73 lane drop.

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• Dedicated parking areas • 8-foot Shared use path on the creek side. • Alignment shift for improved sight lines. • Intersection improvements at Little Cub Creek.

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• Excavation of rock outcropping and improved driver sightlines. • Dedicated parking area. • 8-foot Shared use pathto Downtown Evergreen. • 5-foot sidewalk on creek side. • Construct retaining wall on east. • Extend existing boxculvert.

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Looking North Towards Downtown Evergreen

• Increased left-turn lane storage for Buffalo Park Road. • Exterior southbound lane transitions into a right turn to BuffaloPark Road.

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• Maintains existing driveways. • Provides designated left turn lanes to properties. • Minimizes impact to creek. • 8-foot Shared use path on the creek side.

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areas.

• Intersection

Cub Creek.

• Dedicated parking

• 8-foot Shared use path on the creek side. • Construct retaining walls and excavate rock outcropping along west side.

improvements at Little

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• Excavation of rock outcropping and improved driver sightlines. • Dedicated parking area. • 8-foot Shared use path to Downtown Evergreen. • 5-foot sidewalk on creek side. • Construct retainingwall on west and east side. • Extend existing boxculvert and reroute creek.

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*Jefferson County will coordinate with property owners once the preferred alternative is identified and the project moves to preliminary design.

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+ Positive Outcome, - Negative Outcome, Neutral

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Benefits • Driver familiarity • Improvement to delays with optimization of traffic signals. • Smaller footprint

Shortcomings • Higher maintenance costs compared to a roundabout intersection • Additional vehicle conflict points

Traffic Level of Service • AM: LOS B • PM: LOS C

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Benefits • Reduces accident severity • Lower vehicle speeds • Lower maintenance costs compared to

traditional • Safer pedestrian crossings.

Shortcomings • Less gaps between vehicles to enter • Large footprint

Traffic Level of Service • AM: LOS A • PM: LOS C

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+ Positive Outcome, - Negative Outcome, Neutral

• One-way front-in angledparking east of Church. • Parallel parking west side, south of JC-73/ SH-74 intersection.

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• One-way back-in angledparking east of Fire Station. • Parallel parking westside, south of JC-73/ SH-74 intersection.

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Suggested Locations: • In front of church in the 3-lane concept. • At the bend south of the JC-73/JC-74 intersection.

Benefits: • Cars can fit in smaller parking spaces. • Visibility of all road users when parking.

Shortcomings: Provides less parking spaces compared to angled parking options.

Figure 1: Source: Google 2020 Downtown Evergreen, Colorado

Figure 2: Source: Google 2020 Golden, CO

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Suggested Location: Across from Church

Benefits: • Angled parking provides moreparking spaces compared toparallel parking. • Conventional driving maneuver.

Shortcomings: • Limited visibility of approaching vehicles, bicyclists and otherroad users.

Figure 1: Source: Google 2020 Downtown Evergreen, Colorado

Figure 2: Source: Google 2020 Golden, CO

Suggested Location: • Across from existing fire station in both concepts.

Benefits: • Improved visibility of approachingbicyclists and on-coming traffic existing parking spot. • Reduces bike/car crash potential. • Provides more parking spaces compared to parallel parking.

Shortcomings: • Limited driver experience maneuver.

Figure 1: Source: Google 2020 Columbia, Canada

E. 7th Avenue and Logan Street

Boulder, CO 80302

Figure 2: Source: City of Kelowna, British

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Denver, CO 80203

Figure 3: Source: Google 2020University Avenue between 17th Street and Broadway Figure 4: Source: T. Boulanger, Transportation

Services, City of Vancouver, WA.

38 Project Schedule

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Public Feedback Survey: https://www.surveymonkey.com/r/JC-73

Project Website: https://www.jeffco.us/jc-73

Jefferson County Contact: Brad Bauer, PE

Jefferson County Project Manager

100 Jefferson County Parkway

Golden, CO 80419

Tel 303-271-8795

[email protected]

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3-Lane Cross Section Fact Sheet

• 1-Northbound and 1-Southbound Lane • 1 Two-way center left turn lane • Southbound JC-73 bike lane • 8-foot shared-use path on thenorthbound creek side • Establishes four parking lots:

• One-way front-in angle parking across from Church • Parallel parking in front of Church • Back-in angle parking across from Fire Station • Parallel parking south of JC-73/SH-74 intersection

+Additional parking lots +Lower property impacts +Maintains and improves access to residences and businesses. +Lower cost -Fewer environmental impacts oMinimal congestion improvement oSomewhat efficient construction phasing.

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5-Lane Cross Section Fact Sheet

• 2-Northbound and 2-Southbound Lane • 1 Two-way center left turn lane • Southbound JC-73 bike lane • 8-foot shared-use path on thenorthbound creek side • Establishes three parking lots:

• One-way front-in angle parking across from Church • Back-in angle parking across from Fire Station • Parallel parking south of JC-73/SH-74 intersection

+Additional parking lots +Enhanced congestion improvement +More efficient construction phasing -High property impacts -May require removalof Plettner Lane but improves accessto residences and businesses elsewhere. -High environmental impacts -High cost