Cobb County Comprehensive Transportation Plan (CTP) Board of Commissioners Briefing January 22,...

Cobb County Comprehensive Transportation Plan (CTP)

Board of Commissioners BriefingJanuary 22, 2008

Cobb County Comprehensive Transportation Plan

Purpose of CTP

• Identifies multimodal transportation needs countywide

• Recommendations include roadway, freight, transit, bicycle and pedestrian solutions

• Compares needs against funding assumptions to develop strategic vision for implementation

• Serves as a transportation planning “platform” upon which future detailed project concept development efforts will build


Study Background

• 2-year effort

• Interjurisdictional, including Cobb’s unincorporated areas and 6 municipalities

• Analysis reported for 4 Planning Areas encompassing entire county

• 2 primary study parts: Transportation elements of DCA Comprehensive Plans and enhanced countywide multimodal recommendations


Coordination and Outreach• Project Management Team (PMT)

– Representatives from County, cities, ARC and GDOT

– 12 meetings over the course of the study

• Stakeholder Coordinating Committee (SCC)

– Representatives from public agencies and private organizations

– Appointed by each County Commissioner and municipality

– 7 meetings (3/06, 6/06, 9/06, 1/07, 5/07, 8/07, 10/07)

• Cobb Paulding Working Group (CPWG)

– Specific focus on traffic within western Cobb and Paulding County impact

– Representatives selected by Cobb County, Paulding County and the City of Marietta

– 6 meetings (10/06, 1/07, 5/07, 8/07, 10/07, 12/07)

• Special briefings conducted for municipalities and CIDs as requested throughout study duration


Public Involvement• Public involvement meetings

– 5 rounds (4/06, 8/06, 2/07, 10-11/07, 1/08)

– 628 attendees from first 4 rounds

• Study website (www.cobbdot.org/ctp)

• Newsletters (4)

• Fact sheets, press releases and meeting flyers

• Stakeholder interviews (52 community leaders)

• Surveys (1000 random phone interviews)

• Contact database (600)


Technical Process

• Accepted methodologies and analyses used to ensure compatibility with regional planning processes

• Regional model adapted to provide greater Cobb specific detail on travel patterns and volumes

• Cost estimates and funding assumptions based on local, regional and state sources and tools


Recommendations• Multimodal Projects

– Roadway

– Transit

– Multi use trails

– Pedestrian facilities

• Policies and Procedures

– Roadway

– Access management

– Freight truck routes

– Travel demand management (TDM)

– Bicycle, pedestrian and multi use trail facilities


Factors Considered in Project Selection

• Congestion

– Overcapacity

– Daily Delay

– Travel Time Index (TTI)

• Safety

• Thoroughfare Plan Classification

• Capital/Operating Costs per Rider

• Potential Community and Economic Impacts


Roadway Improvements

• 137 total

– Widenings = 50

– New roadways, extensions/connectors = 9

– Operational (access management, shoulder widening, corridor improvements) = 30

– Major intersection improvements (grade separation, realignment, new interchange) = 28

– Operational intersection improvements = 36

*Some projects include two types of improvements (e.g., widening and major intersection improvements)


Transit Improvements

• 17 total

– US 41 high capacity transit (feasibility study)

– Express bus service = 5

– Limited stop bus service = 5

– Local bus service = 3

– Circulator shuttle service = 3


Trail & Pedestrian Improvements

• Multi use trails = 44 total (~168 linear miles)

• Pedestrian facilities = 80 total (~ 41 linear miles)

– Safety & key corridor = 34

– LCI connectivity = 11

– School/activity center buffer = 35

• Assume roadway improvements will incorporate bicycle/pedestrian facilities and trail connections as appropriate


Recommendations by Planning Area

Project TypeNorthwest(Acworth & Kennesaw)

NortheastSoutheast(Marietta &

Smyrna)

Southwest (Austell & Powder

Springs)

Roadway 40 42 43 30

Transit 8 5 7 6

Trail 9 5 20 18

Pedestrian 14 6 32 34

TOTAL 71 58 102 88

*Some projects are included in more than one Planning Area


System Performance Results

Performance Measure

Base ScenariosNeeds Based

Plan2005 2030 E+C

Travel Time Index 1.43 1.73 1.55

>6 Hrs of Congestion(% of Lane-Miles)

1% 5% 2%

2-6 Hrs of Congestion% of Lane-Miles)

18% 27% 20%

<2 Hrs of Congestion(% of Lane-Miles)

81% 68% 77%

Annual Congestion Cost(x $1,000,000)

$870.1 $1,908 $1,515

Transit Mode Share 0.6% 0.7% 1.2%


Access Management Policies• Continued adherence to development standards

• Formation of access review committee

• Completion of corridor specific access management plans, beginning with arterials

• Required access management plan as part of concept development process for arterial and major collector widenings and upgrades

• Access Management Overlay Districts (AMODs)

• Appropriate access management applications based upon functional classification typology


Truck Freight Policies

• Land use compatibility

• Operations and design

• Maintenance

• Intermodal facilities


Travel Demand Management Policies

• TMA expansion and development

• Required TDM plans for new large land developments

• CIDs critical to TDM implementation


Bicycle, Pedestrian & Trail Policies• Strategically target investments to most suitable areas

• Require roadway projects to include pedestrian and bicycle facilities as appropriate

• Update zoning code to require pedestrian and bicycle facilities and amenities in commercial and mixed use developments

• Establish guidelines for ensuring connectivity between neighborhoods and adjacent land uses

• Promote education, enforcement and awareness programs to encourage increased use of and safety for bicycling and walking


Estimated Costs by Category• Roadway = $4,504,029,000

– On System Improvements = $3,532,576,000

– Off System Improvements = $971,453,000

– Capacity Improvements = $3,274,872,000

– Major Intersection Improvements = $798,344,000

– Operational Improvements = $430,813,000

• Transit = $1,132,803,000 (Capital & Operating)

• Multi Use Trails = $168,856,000

• Pedestrian = $38,603,000

– Safety & key corridor = $18,103,000

– LCI connectivity = $7,330,000

– School & activity center buffer = $13,170,000


Use of Plan into the Future

• To move specific transportation projects forward (prioritization, funding, detailed concept definition)

• For project inclusion in ARC’s Regional Transportation Plan (must be drawn from and supported by the countywide CTP)

• As a staff resource during interjurisdictional and intercounty coordination efforts

• To ensure land use / transportation connectivity and shifting travel behaviors are monitored by Plan updates (every 3-5 years)


Upcoming Outreach

• Draft CTP summary and document placed on website from January 23 for public download, review and comment

• Final Public Involvement Meeting on January 24 from 3:30-7:30 PM at Central Marietta Library

• CTP presentations to local municipality Mayors/Councils for appropriate action

Questions?

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