Hunter Mill Road and Sunset Hills Road Study

Hunter Mill Road and Sunset Hills Road Study

Community Meeting #3

Analysis Findings

May 20, 2015

Presentation Agenda

• Introductions

• Project Objectives

• Summary of Prior Community Involvement

• Build Alternatives

• Future Traffic Analysis

• Questions and Answers

• Next Steps

2

Introductions

• County Staff

• Consultant Team (RK&K)

3

Project Objectives

• Address existing congestion

• Plan for future traffic

• Address queuing along Hunter Mill Road and Sunset Hills Road

• Improve access to the Dulles Toll Road by minimizing congestion

• Maintain Hunter Mill Road’s character by applying context sensitive solutions

4

Project Background

• Board of Supervisors requested study

• “No Build” includes proffered improvements from the Oakcrest School rezoning

• Two meetings held thus far:

o December 8, 2014: Kick-Off

o February 24, 2015: Existing & No-Build conditions and community input on alternatives

5

Project Process

8 MONTHS

6

We are Here

Project Study Area

7

Intersection ID IntersectionIntersection Control Type

1Hunter Mill Road at Sunrise Valley Drive

Signalized

2Hunter Mill Road at

DTR EB RampsSignalized


DTR WB RampsSignalized


Sunset Hills RoadSignalized


Crowell RoadUnsignalized

(All-Way Stop)

6Hunter Mill Road at Hunting Crest Lane

Unsignalized(Two-Way Stop)


Lake Fairfax ParkUnsignalized

(Two-Way Stop)

7

6

5

43

2

1

Summary of Community Comments

• Do not want traffic from Wiehle Avenue diverted to Hunter Mill Road

• Concerns that the signal at Crowell Road may increase delays in the off-peak

• Roundabouts should be seriously examined as an alternative for the corridor

• Keep Hunter Mill Road’s character the same

• Concern that improvements may attract more traffic

8

9

Response to Community Questions

• Will these improvements attract vehicles to Hunter Mill Road?

o Trips will divert from Hunter Mill Road and use Crowell. The improvement will not add new trips to the road network, but divert local trips.

• Can more lanes be accommodated under the existing Toll Road Structures?o More lanes cannot feasibly be accommodated under the DTR.

The piers for the Dulles Access Road are load bearing and would need to be replaced. Replacement of just the two bridges would be near $40 million, not including the cost of improving Hunter Mill Road.

10

Response to Community Questions

• Will a signal at Crowell Road and Hunter Mill Road increase delays in the off peak?o An actuated signal can be used in the off peak to minimize

the delays of vehicles on Crowell Road.

• Why not consider moving the ramps of the Dulles Toll Road?o Prior to modifying the ramp termini of the Dulles Toll Road

all viable and workable alternatives need to be tested to see if they work. Changing the Toll Road intersections is a last step measure to improve the corridor as it would require a federal review and a much more time consuming process.

11

Community Input on Alternatives

• Test an all Roundabout Solution• Test extending the right turn lane on southbound

Hunter Mill Road before the intersection of Sunrise Valley Drive

• See if additional lanes can be added underneath the Dulles Toll Road

• Test a realigned Sunset Hills Road• To a mid point between the current location and Crowell

Road• To Crowell Road

Future Conditions - Geometry

• Hunter Mill RoadMinor Arterial (Type B)

o 1 Lane in each direction (north of Sunset Hills Road)

o 2 Lanes Northbound, 1 Lane Southbound (south of Dulles Toll Road)

o 35 miles per hour speed limit

• Sunrise Valley Driveo Minor Arterial (Type B)

o 1 Lane in each direction (East of Hunter Mill Road)

o 2 Lanes in each direction (West of Hunter Mill Road)


12

Future Conditions - Geometry

13

• Sunset Hills Roado Minor Arterial (Type B)

o 2 Lanes in each direction


• Crowell Roado Minor Arterial (Type B)

o 1 Lane in each direction


Alternatives Developed

14

Crowell Road

Sunset Hills Road

Sunrise Valley Drive

Hu

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oad

WB DTR

EB DTR

No-BuildCrowell Road

Sunset Hills Road


Hu

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oad

WB DTR

EB DTR

Alt. 1ACrowell Road

Sunset Hills Road


Hu

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oad

WB DTR

EB DTR

Alt. 1B

Alternatives Developed

15

Crowell Road

Sunset Hills Road


Hu

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oad

WB DTR

EB DTR

No-BuildCrowell Road

Sunset Hills Road


Hu

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oad

WB DTR

EB DTR

Alt. 2Crowell Road

Sunset Hills Road


Hu

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oad

WB DTR

EB DTR

Alt. 3

16

Alternative 1A

Intersection Type

Sunrise Valley Drive Roundabout

Eastbound Dulles Toll Road Roundabout

Westbound Dulles Toll Road & Sunset Hills Road

Roundabout

Crowell Road Roundabout

Alternative 1A

17

Sunrise Valley Drive DTR EB Off/On Ramps

Alternative 1A (Cont.)

18

DTR WB off/On Ramps Crowell Road/Relocated Sunset Hills Rd

19

Alternative 1B

Intersection Type

Sunrise Valley Drive Roundabout

Eastbound Dulles Toll Road Roundabout

Westbound Dulles Toll Road Roundabout

Sunset Hills Road Realigned to Crowell Road

Roundabout

Alternative 1B

20


Alternative 1B (Cont.)

21


22

Alternative 2

Intersection Type

Sunrise Valley Drive Signalized

Eastbound Dulles Toll Road Signalized

Westbound Dulles Toll Road Signalized

Sunset Hills Road – moved north Signalized

Crowell Road Signalized

Alternative 2

23


Alternative 2 (Cont.)

24

DTR WB off/On Ramps & Relocated Sunset Hills Crowell Road

25

Alternative 3

Intersection Type

Sunrise Valley Drive Signalized

Eastbound Dulles Toll Road Signalized

Westbound Dulles Toll Road Signalized

Sunset Hills Road Realigned to Crowell Road

Signalized

Alternative 3

26


Alternative 3 (Cont.)

27


Need new graphic

AM 2030 Comparison

28

Intersection Approach

AM Peak Hour

No Build Alternative 1A Alternative 1B Alternative 2 Alternative 3

Delay LOS Delay LOS Delay LOS Delay LOS Delay LOS

Hunter Mill Road at


SB 24.2 C 8.2 A 8.2 A 23.0 C 23.2 C

EB 46.8 D 13.5 B 13.5 B 46.7 D 43.3 D

WB 44.0 D 17.4 B 17.4 B 41.8 D 41.5 D

Overall 38.1 D 13.2 B 13.2 B 36.9 D 35.9 D

Hunter Mill Road at

Dulles Toll Road EB Ramps

NB 20.5 C 16.9 B 16.9 B 16.2 B 16.4 B

SB 19.8 B 4.8 A 4.8 A 17.1 B 16.4 B

EB 74.8 E 11.8 B 11.8 B 59.6 E 55.7 E

Overall 30.6 C 12.3 B 12.3 B 18.7 B 18.4 B

Hunter Mill Road at

Dulles Toll Road WB Ramps

NB 27.3 C - - 5.3 A 4.7 A 6.5 A

SB 3.5 A - - 14.6 B 3.9 A 6.9 A

WB 62.4 E - - 15.9 B 47.8 D 42.8 D

Overall 29.8 C - - 11.0 B 15.4 B 15.9 B

Hunter Mill Road at

Dulles Toll Road WB Ramps at

Sunset Hills Road

NB - - 14.9 B - - - - - -

SB - - 535.0 F - - - - - -

WB - - 21.8 C - - - - - -

SEB - - 13.3 B - - - - - -

Overall - - 174.7 F - - - - - -

Hunter Mill Road at

Sunset Hills Road*

NB 31.5 C - - - - 32.5 C - -

SB 31.2 C - - - - 36.1 D - -

EB 84.4 F - - - - 56.0 E - -

Overall 41.1 D - - - - 38.0 D - -

Hunter Mill Road at

Crowell Road**

NB 13.2 B 20.0 B - - 19.0 B - -

SB 21.1 C 64.1 E - - 19.5 B - -

WB 42.1 D 12.4 B - - 49.5 D

Overall 24.7 C 29.0 C - - 29.2 C - -

Hunter Mill Road at

Crowell Road / Sunset Hills

Road

NB - - - - 13.1 B - - 30.9 C

SB - - - - 338.7 F - - 70.8 E

EB - - - - 9.8 A - - 42.9 D

WB - - - - 19.2 B - - 44.8 D

Overall - - - - 70.9 E - - 43.8 D

* Alt 2 in new location** No Build includes the proffered signal at Crowell Road

PM 2030 Comparison

29

Intersection Approach

PM Peak Hour

No Build Alternative 1A Alternative 1B Alternative 2 Alternative 3

Delay LOS Delay LOS Delay LOS Delay LOS Delay LOS

Hunter Mill Road at


SB 38.7 D 8.3 A 8.3 A 34.1 C 32.7 C

EB 64.6 E 177.3 F 177.3 F 54.1 D 56.4 E

WB 34.3 C 8.2 A 8.2 A 38.0 D 34.6 C

Overall 48.8 D 77.4 E 77.4 E 43.1 D 42.8 D

Hunter Mill Road at

Dulles Toll Road EB Ramps

NB 16.9 B 13.1 B 13.1 B 18.1 B 17.9 B

SB 19.5 B 4.8 A 4.8 A 11.8 B 11.4 B

EB 65.1 E 16.4 B 16.4 B 56.5 E 49.6 D

Overall 25.9 C 10.0 A 10.0 A 17.0 B 16.4 B

Hunter Mill Road at

Dulles Toll Road WB Ramps

NB 97.4 F - - 6.4 A 29.3 C 20.6 C

SB 21.3 C - - 178.0 F 30.7 C 38.6 D

WB 105.2 F - - 15.9 B 51.3 D 48.9 D

Overall 73.1 E - - 68.6 E 36.0 D 34.9 C

Hunter Mill Road at

Dulles Toll Road WB Ramps at

Sunset Hills Road

NB - - 10.3 B - - - - - -

SB - - 220.3 F - - - - - -

WB - - 22.5 C - - - - - -

SEB - - 106.6 F - - - - - -

Overall - - 80.4 F - - - - - -

Hunter Mill Road at

Sunset Hills Road*

NB 14.6 B - - - - 24.5 C - -

SB 59.4 E - - - - 2.8 A - -

EB 93.3 F - - - - 49.5 D - -

Overall 53.4 D - - - - 27.2 C - -

Hunter Mill Road at

Crowell Road**

NB 14.9 B 6.1 A - - 12.4 B - -

SB 19.6 B 9.9 A - - 20.4 C - -

WB 40.9 D 11.2 B - - 49.5 D - -

Overall 26.1 C 8.6 A - - 28.1 C - -

Hunter Mill Road at

Crowell Road / Sunset Hills

Road

NB - - - - 9.4 A - - 33.9 C

SB - - - - 10.8 B - - 26.7 C

EB - - - - 10.2 B - - 36.7 D

WB - - - - 11.5 B - - 34.5 C

Overall - - - - 10.4 B - - 30.0 C

* Alt 2 in new location** No Build includes the proffered signal at Crowell Road

30

Findings/Conclusions• Signalized Alternatives performs best at Hunter

Mill Road and Sunrise Valley Drive

• All alternatives approximately same at DTR eastbound ramps

• Alternative 1A (roundabout with DTR Ramp and Sunset Hills Road) performs the worst at DTR westbound ramps

31

Findings/Conclusions (Cont’d)• The signalized alternatives perform best at DTR

westbound ramps

• Sunset Hills Road operates best when realigned to the north

• Corridor likely not “One Size Fits All” – Mix and match of alternatives might be solution

32

Alternative Comparison

WB DTR

Ramps &

Sunset

Hills

Crowell

Road

ROW

Alternative 2 Alternative 3

Sunrise

Valley

Drive

EB DTR

Ramps

WB DTR

Ramps &

Sunset

Hills

Crowell

Road

Sunrise

Valley

Drive

EB DTR

Ramps

WB DTR

Ramps &

Sunset

Hills

Crowell

Road

Sunrise

Valley

Drive

EB DTR

Ramps

WB DTR

Ramps &

Sunset

Hills

Crowell

Road

Sunrise

Valley

Drive

EB DTR

Ramps

Alternative 1A Alternative 1B

COST

LOS

Alternative 1A Alternative 1B Alternative 2 Alternative 3

ROW

Cost

LOS

Better

Average

Worse

33

Questions

• 30 Minutes

• Please limit yourself to one question so others have an opportunity to ask

Comments and Questions are requested to be received by Friday, June 5, 2015 to:

[email protected]

Summary and Next Steps

• Public meeting to present preferred alternative

o Tentatively mid-July

• Final Recommendations and Report

• Plan amendment to integrate preferred alternative into the Comprehensive Plan

34

Project TimelineTask No. Description

0

Finalize Scope

Consultant Selection

Contracting/Issue NTP

1

Establish Existing Conditions

Kick off meeting

Public/Stakeholder Meeting

Summary Document on Existing Conditions

2

Develop MOEs

Preliminary Concepts


Finalize Concepts

Summary Document on Alternatives

3

Preliminary Assessment of Alternatives

Final Assessment of Alternatives


Summary Document on Alternatis Analysis

4

Chapter 1 (draft)

Chapter 2 (draft)

Chapter 3 (draft)

Chapter 4 (draft)

Chapter 5 (draft)

Technical Appendices

Final Report & Project Files

Deliverables Meetings Working Time

December January February March April May June July

December 2014 - July 2015

October November

Existing Conditions

Develop Alternatives & MOEs

Alternatives Analysis

Documentation

Scoping

We are here

35

News & Politics

Hunter Mill Road and Sunset Hills Road Study