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Legacy North to Legacy Connection Evaluation Study August 18, 2007 PowerPoint Presentation
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Legacy North to Legacy Connection Evaluation Study August 18, 2007. Background. UDOT North Legacy to Legacy Connection Corridor Preservation Study – June 14, 2007. Goal:

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Legacy North to Legacy Connection Evaluation Study August 18, 2007


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slide1

Legacy North to Legacy

Connection Evaluation Study

August 18, 2007

slide2

Background

UDOT North Legacy to Legacy Connection Corridor Preservation Study – June 14, 2007

Goal:

Examine [and select] a corridor for a future connection between the existing Legacy Parkway and the future North Legacy Highway

Criteria:

  • Provide a direct connection to I-15
  • Provide a direct connection to the Legacy Parkway
  • Provide a local access connection to the Legacy/North Legacy Parkway
  • Meet the transportation needs based on 2040 traffic projections
slide3

Study Tasks

  • Review UDOT traffic model volume projections
  • Assess UDOT corridor alignment options
  • Assess the City’s current Master Transportation Plan alignment option as a viable UDOT option
  • Identify and assess additional corridor alignment options
  • Assess Park Lane capacity and safety considerations

Which option is best for the City of Farmington?

slide4

1) UDOT Traffic Model Volume Projections

Key Issues:

  • Forecasts were developed primarily for the purpose of analyzing 2040 traffic operations
  • Formal environmental document required to determine/ substantiate facility purpose and need
    • Facility Type
    • Number of Lanes
    • Beginning and Ending Points (Logical Termini)
slide5

2) UDOT Corridor Alignment Options

UDOT North Legacy to Legacy Connection Corridor Preservation Study – June 14, 2007

Option 1: D&RG Split Interchanges

Option 2: Western Alignment

Option 3: D&RG South Interchanges

Option 4: Eastern Alignment

UDOT would generally like to preserve a 300 foot wide corridor

slide6

UDOT Option 1D&RG Split Interchanges

I-15

Shepard Ln.

North Legacy

Highway

US 89

PROS

Adjacent to existing (and potentially future) rail and utility corridor – current divider.

Potential for additional interchange connections to western residential and commercial roadways; reduce demand on Park Lane/I-15 interchange.

Utilizes current Master Transportation Plan right of way near Shepard Ln.

Provides a distinct geographic separation between commercial and residential areas

Park Ln.

Clark Ln.

State St.

Powerline Corridor

D&RG Corridor

Legacy Parkway

Glovers Ln.

I-15

slide7

UDOT Option 1D&RG Split Interchanges

I-15

Shepard Ln.

North Legacy

Highway

US 89

CONS

Additional geographic division of Farmington.

Potential for increased noise and air quality impacts to additional residential areas.

Split interchange configurations for Legacy Parkway and I-15; operational and right-of-way considerations.

Impacts to commercial properties west of I-15.

Park Ln.

Clark Ln.

State St.

Powerline Corridor

D&RG Corridor

Legacy Parkway

Glovers Ln.

I-15

slide8

UDOT Option 2Western Alignment

North Legacy

Highway

I-15

Shepard Ln.

US 89

PROS

No additional geographic division of Farmington

Potential for interchange connections to western roadways

Utilizes current Master Transportation Plan right of way near Shepard Ln.

Likely the least impact to existing and planned development

D&RG Corridor

Park Ln.

Clark Ln.

State St.

Powerline Corridor

Legacy Parkway

Glovers Ln.

I-15

slide9

UDOT Option 2Western Alignment

North Legacy

Highway

I-15

Shepard Ln.

US 89

CONS

Potential for interchange connections to western residential roadways

Potential changes to land use near interchanges

Inability to decrease demand on the Park Lane/ I-15 interchange

Significant concerns regarding viability of the option due to wetland and wildlife habitat issues

Western alignment likely to serve less of the regional demand; impacts along I-15

D&RG Corridor

Park Ln.

Clark Ln.

State St.

Powerline Corridor

Legacy Parkway

Glovers Ln.

slide10

UDOT Option 3D&RG South Interchanges

Shepard Ln.

North Legacy

Highway

I-15

PROS

Combined interchange area for both I-15 and Legacy Parkway

Adjacent to existing (and potentially future) rail and utility corridor – current divider

Potential for additional interchange connections to western residential and commercial roadways; reduce demand on Park Lane/I-15 interchange. Would require detailed analysis

Provides a distinct geographic separation between commercial and residential areas

US 89

D&RG Corridor

Park Ln.

Clark Ln.

State St.

Powerline Corridor

Legacy Parkway

I-15

Glovers Ln.

slide11

UDOT Option 3D&RG South Interchanges

Shepard Ln.

North Legacy

Highway

I-15

CONS

US 89

Additional geographic division of Farmington

Potential for increased noise and air quality impacts to additional residential areas

Impacts to commercial lands west of I-15

D&RG Corridor

Park Ln.

Clark Ln.

State St.

Powerline Corridor

Legacy Parkway

I-15

Glovers Ln.

slide12

UDOT Option 4Eastern Alignment

Shepard Ln.

North Legacy

Highway

I-15

PROS

Combined interchange area for both I-15 and Legacy Parkway

No additional geographic division of Farmington

Potential noise and air quality concerns stay primarily within the currently impacted areas

US 89

D&RG Corridor

Park Ln.

Clark Ln.

State St.

Powerline Corridor

I-15

Legacy

Parkway

Glovers Ln.

slide13

UDOT Option 4Eastern Alignment

Shepard Ln.

North Legacy

Highway

I-15

CONS

US 89

Limited ability to provide local access connections

Elevated facility in vicinity of Station Park development

Close proximity to I-15; incident management concerns

Further limits potential for future additional I-15 interchange connections to the local transportation network

Impacts to commercial lands west of I-15

D&RG Corridor

Park Ln.

Clark Ln.

State St.

Powerline Corridor

I-15

Legacy

Parkway

Glovers Ln.

slide14

2) UDOT Corridor Alignment Options

Which option is best for the City of Farmington?

Each option has either a substantial con and/or requires further study in order to conclude that the particular option is indeed “better” than the others or the “best” for the City.

Possible that none of the UDOT options help Park Lane so that it functions adequately in the future.

The preparation of an environmental document would likely assist in providing answers to many of the technical questions but would not help in making decisions on items that are goal oriented or value based.

slide15

3) City’s Current MTP Alignment Option

Won’t accommodate the 2040 traffic demands

slide16

4) Additional Corridor Alignment Options

Is there a potentially better solution?

(Within the context of a Corridor Preservation Study)

slide18

UDOT Option 2Western Alignment

North Legacy

Highway

I-15

Shepard Ln.

US 89

Modifications

Combine I-15 & Legacy Parkway interchanges south of Glovers Lane (not depicted)

I-15 local access interchange at Shepard Lane

North Legacy Highway local access interchange on 1525 W. near Glovers Lane. Others?

Development of local transportation roadway network west of I-15

D&RG Corridor

Park Ln.

Clark Ln.

State St.

Powerline Corridor

Legacy Parkway

Glovers Ln.

I-15

slide19

UDOT Option 3D&RG South Interchanges

Shepard Ln.

North Legacy

Highway

I-15

Modifications

Shifting of I-15 & Legacy Parkway interchanges slightly north to minimize impacts to 250 S. area (not depicted)

I-15 local access interchange at Shepard Lane

North Legacy Highway local access interchange at Park Lane

Development of local transportation roadway network west of I-15

US 89

Park Ln.

D&RG Corridor

Clark Ln.

State St.

Powerline Corridor

Legacy Parkway

I-15

Glovers Ln.

slide20

UDOT Option 4Eastern Alignment

Shepard Ln.

North Legacy

Highway

I-15

Modifications

US 89

I-15 local access interchange at Shepard Lane

North Legacy Highway local access interchange between Shepard Lane & Park Lane

Development of local transportation roadway network west of I-15

D&RG Corridor

Park Ln.

Clark Ln.

State St.

Powerline Corridor

I-15

Legacy

Parkway

Glovers Ln.

slide21

4) Additional Corridor Alignment Options

Results were modifications to or combinations of one or more of the four UDOT options

Although some of the additional alignment options represented a perceived improvement as compared to the original options, none proved to address the primary issues of concern or resulted in the elimination of relevant questions better than any other option.

Issues such as precise interchange locations, lane configurations, vertical and horizontal alignments, and right-of-way requirements are not addressed until the environmental document is prepared and approved and final design is completed.

slide22

5) Park Lane Capacity and Safety Considerations

Unique Facility:

  • Located at the convergence of three freeway systems (US 89, I-15 and Legacy Parkway)
  • Only current I-15 interchange directly serving the areas west of I-15 between 200 North/SR 273 in Kaysville (± 4 miles to the north) and Parrish Lane in Centerville (± 5 miles to the south)
slide23

5) Park Lane Capacity and Safety Considerations

Unique Facility:

  • Located at the convergence of three freeway systems (US 89, I-15 and Legacy Parkway)
  • Only current I-15 interchange directly serving the areas west of I-15 between 200 North/SR 273 in Kaysville (± 4 miles to the north) and Parrish Lane in Centerville (± 5 miles to the south)

Capacity issues need to be addressed regardless of what happens with UDOT’s corridor preservation effort

slide24

5) Park Lane Capacity and Safety Considerations

Station Park Traffic Study

  • Recommends capacity improvements to Park Lane and interchanges with 1-15 and US-89
  • Indicates that future (2030) traffic demands on Park Lane at both the US-89 and I-15 interchanges will result in failing traffic conditions
slide25

5) Park Lane Capacity and Safety Considerations

Improvement Concepts:

  • Reconfigure the existing US-89/ Park Lane interchange from a tight-diamond to a Single Point Urban Interchange (SPUI).
  • Reconfigure the existing I-15/ Park Lane interchange from a tight-diamond to a SPUI.
  • Widen the existing structures over I-15 and US-89 to accommodate additional capacity.
  • Construct an additional closely spaced but separate parallel facility over US-89 and I-15 immediately north of the existing facility.
  • Eliminate local access from I-15 and/ or US-89.
  • Additional I-15 local access interchanges.
slide26

5) Park Lane Capacity and Safety Considerations

Additional I-15 Local Access Interchanges?

  • VERY difficult south of the US-89/ Park Lane interchange:
    • Adjacent rail corridor and Legacy Parkway
  • Difficult north of the US-89/ Park Lane interchange:
    • Adjacent rail corridor
    • Adjacent residential development

The Shepard Lane crossing represents the most feasible location for a future I-15 local access interchange

slide27

5) Park Lane Capacity and Safety Considerations

Shepard Lane Local Access Connection

  • In the past, only studied as a potential connection to North Legacy Highway
  • Could reduce the demand on Park Lane by as much as 30 percent as well as accommodate a significant amount of traffic associated with potential development west of I-15
  • Must include supporting roadway network west of I-15
slide28

Study Recommendations

Which option is best for the City of Farmington?

Viewpoints:

  • Don’t divide Farmington any more
  • Don’t increase noise
  • Don’t lower air quality
  • Address issues related east/west circulation (Park Lane & traffic on neighborhood streets)
  • Maximize the potential for commercial/retail development (tax base)
  • Enhance/Maintain Farmington’s “rural quality of life.”
  • Reduce congestion on I-15
  • Enhance/Maintain suitable natural habitats for wildlife
slide29

Study Recommendations

  • Wait to consider UDOT’s request to amend the Master Transportation Plan preserving a connection corridor until UDOT completes an Environmental Assessment (EA) or Environmental Impact Statement (EIS).
  • Consider an amendment to the Master Transportation Plan to remove the current North Legacy to Legacy connection option (In conjunction with #4).
  • Initiate an effort to look at the development potential west of I-15
    • Quantify the magnitude of traffic
    • Identify and analyze key traffic access and circulation issues
    • Study the feasibility for a local access Shepard Lane interchange
  • If a local access interchange is viable at I-15/ Shepard Lane, pursue an amendment to the Master Transportation Plan to include the interchange.