river road at dowell road intersection safety …

RIVER ROAD AT DOWELL ROADINTERSECTION SAFETY INTERSECTION SAFETY IMPROVEMENTSINFORMATION MEETING

MCHENRY COUNTYDIVISION OF TRANSPORTATION

BOLLINGER, LACH & ASSOCIATES, INC.

June 11, 2012

M i T i d PMeeting Topics and Purpose

• Purpose and need• Alternatives explored

• Traffic signal

• Roundabout

• Project schedule• Questions?Questions?

Project Locationj

River/Dowell

Village Hall

Project Purpose and Needj p

• Improve public safety and transportation across the County

• Geometryo 90o preferredo 30o currentlyo 30 cu e y Poor visibility Poor turn

maneuverability

• 14 crashes from 2008-2011

Existing Level of Service (LOS)g ( )

2040• Currently LOS F

• Heavy right turn WB on Dowell

399 (119)

1237 (706)

PEAK HOUR VOLUMES

• Heavy left turn SB

• Heavy thru traffic on River

125 (439)

423 (335)

1237 (706)

517 (249)

760 (976)Control Delay

(s/vehicle)LOS

0-10 A

10 15 B

Legend:

>10-15 B

>15-25 C

>25-35 D

>35-50 E000 (000) = AM (PM)>50 F

Highway Capacity Manual, 2010 Edition

Al i E l dAlternatives Explored

Warrant

NOT METWarrant

METWarrant

METNOT MET MET4 hour volumes/delays8 hour volumes/delays

MET

Alternative 1A – Traffic Signalg

• 90o angle

• Limitso Lily Lake –

Breezy Laneo River Road –

Highwood R dRoad

• Removalso Buildingo Buildingo Billboardo Dowell Road

connection

Alternative 1A – Lane Configuration

2040 LOS C

Two thru lanes needed for

th d th north and south on River

Right and left turn lanes for turn lanes for EB traffic

Two left turn lanes for SB River

Right turn lane for NB River

Alternative 1A – Access Concerns

• Mackey’s Hideout Bar

o Improve f safety

concerns

• Property access to the north

Th C t• Thomas Court

Alternative 1A – Dowell Rd Backupsp

2012 backups2012 backups(175 ft. +/-)

2040 backups(315 ft. +/-)

• North accesso Entering and

exiting concerns

• A f Ri • Access from River Road will not work

• Thomas Court –restricted right-restricted rightin/right-out

Alternative 1A – River Rd Backupsp

2012 backups(300 ft. +/-)

2040 backups(900 ft. +/-)

Potential cut thru traffic on Breezy Lane to Thomas Court

Alternative 1B – Thomas Ct off River

• Access restricted

• Potential • Potential rear end collisions in NB River right turn lane

• Additional impervious area

Alternative 1C – Thomas Ct cul-de-sac

Emergency access

Eliminates second access for Thomas Court

Alternative 2 – Roundabout

• 90o angle

• Limitso Lily Lake –

Breezy Laneo River Road –

Highwood R dRoad

• Removalso Buildingo Buildingo Billboardo Dowell Road

connection

Alternative 2 – Lane Configurationg

• 2040 LOS B

• Two thru lanes on RiverRiver

• Isolated rights off of River and ff f off of

Dowell

• Left turns will travel will travel thru the roundabout

Alternative 2 – Access Concerns

• Yield vs. stop

• Designated Lanes on Entry - Easier decision ymaking

• Fewer backups

• Geometric flexibility

• Full access to Thomas CourtCourt

Alternative 2 – Dowell Rd Backupsp

2012 backups(175 ft. +/-)

2040 backups(300 ft. +/-)

• Fewer backups

• Safe location for North Drive and North Drive and Thomas Court turning movements

Alternative 2 – River Rd Backupsp

2012 backups(175 ft. +/-)

2040 backups2040 backups(450 ft. +/-)

• Minimize potential cut thru traffic on Thomas Court

FHWA Vidhttp://safety.fhwa.dot.gov/intersection/roundabouts/fhwasa10023/wmv cc final/10-2124 Roundabouts.wmv

FHWA Videop // y g / / / / _ _ / _

City of Issaquah, Washington

Hunt Club Road at Wadsworth Road –near Gurnee Mills

River Road at Roberts Road - BarringtonMinnesota

ROUNDABOUTS

BUILT PROJECTS RIVER ROAD AT DOWELL ROAD

FUTURE PROJECTS

Drainageg

Culverts will be repaired or maintained

Potential drainage storage garea

L d A i i iAlternatives are continuing to be evaluated to

Land AcquisitionAlternatives are continuing to be evaluated to minimize impacts. Purchase of right of way or easements will be necessary. MCDOT follows the Federal Uniform Act for local land acquisition.

T ffi D i C iTraffic During Construction

• One lane open in each direction

• Some short-term lane closures and lane shifts

• Driveway access will always be ymaintained

RECAP Al iRECAP Alternatives

ALTERNATIVE 1 - TRAFFIC SIGNAL

• $2.8 million

ALTERNATIVE 2 – ROUNDABOUT

• $2.4 million

• LOS C

• Right of way

• Thomas Court access concerns

• LOS B

• Right of way

• Flexibility with accessesThomas Court access concerns

• Thomas Court used as cut-thru

Flexibility with accesses

• Shorter backups

• Minimize cut-thru traffic on Thomas

• Safety

Project Schedulej

This schedule is meant as a guide and is subject to change

C i

A i i d l i i

Construction

Anticipated to last an entire construction season

NEXT STEPSNEXT STEPS…

• Receive public comments• Alternative selection• Phase II Engineering and Design Permitting• Land acquisition

Q i ?Wally Dittrich Design Manager

Questions?Wally Dittrich - Design ManagerMcHenry County Division of Transportation815-334-4980, wrdittrich@co.mchenry.il.uswww.McHenryCountyDOT.org

Ci d Fl P j t MCindy Flower - Project ManagerBollinger, Lach & Associates, Inc.630-438-6400, cflower@bollingerlach.com6 0 6 00, @ g