301 Interchange South of Summit Bridge and Option 1...PURPLE GREEN + Spur Option 3 (New)...

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  • 301

    project developmentproject development

    U.S.

    U.S.

    project developmentproject development

    U.S.

    U.S.

    44

    February 2006

    PURPLE GREEN + SpurOption 2 (New)

    andPURPLE + SpurOption 2 (New)

    and GREENPURPLE GREEN + SpurOption 2 (New)

    and

    PURPLE GREEN + SpurOption 1

    andPURPLE + SpurOption 1

    and GREENPURPLE GREEN + SpurOption 1

    and

    BROWN NORTHBROWN NORTH

    YELLOWYELLOW

    YELLOWYELLOW

    PURPLE GREEN + SpurOption 3 (New)

    andPURPLE + SpurOption 3 (New)

    and GREENPURPLE GREEN + SpurOption 3 (New)

    and

    AdvantagesImproves the existing sharpcurve and removes the traffic signalon the curve

    Maintains free flow of heaviest localmovements (NB + SB SR 896) atthe interchange

    Directional “Y” interchange isfarther away from Summit BridgeFarms than Option 1

    SR 896

    GREEN+SpurandPURPLE+SpurPURPLE+Spur GREEN+Spur GREEN+SpurandPURPLE+SpurPURPLE+Spur GREEN+Spur

    GREEN+SpurandPURPLE+SpurPURPLE+Spur GREEN+Spur

    GREEN+SpurandPURPLE+SpurPURPLE+Spur GREEN+Spur

    ROAD EXTENDED

    ROAD EXTENDED

    ROAD EXTENDED

    BETHEL CHURCHBETHEL CHURCH

    Note: 3rd Traffic Signal atOld Schoolhouse Road

    BROWN SOUTHBROWN SOUTHBROWN SOUTHBROWN SOUTH

    1

    PURPLE GREEN + SpurOption 4 (New)

    andPURPLE + SpurOption 4 (New)

    and GREENPURPLE GREEN + SpurOption 4 (New)

    and

    Northbound Spur Road is elevated, adjacentto Summit Bridge Farms community

    Does not provide direct local access(Summit Bridge Farms, Lea Eara Farms &Summit Farms) to and from the south, onthe Spur

    AdvantagesSame as Option 3, plus

    Provides access for local residents

    Would keep speeds lower on Spur Road, closerto a true parkway concept

    Would reduce traffic on the section ofChoptank Road north of Churchtown Roadcompared to spur options with no local access

    Same as Option 3, plus

    May accelerate or encourage furtherdevelopment along roadways with access tothe spur in both Delaware and Maryland(Old Schoolhouse Road, Churchtown Roadand Bethel Church Road)

    Provides more toll free connectivity to thespur for Westown, Southridge, and otherMiddletown communities west of US 301,increasing volumes on southern ChoptankRoad. About 1,900 vpd are projected to useOld Schoolhouse Road to access Spur,rather than Levels Road (toll).

    Potential safety issues – intersection vs.free flowing traffic

    Potential noise issues – braking, stoppingand starting at intersections

    BROWN NORTHBROWN NORTH

    DisadvantagesRequires heaviest local traffic movements

    (SB & NB SR 896) to use a signalized intersection

    Results in backups in AM, NB double right turn

    has 800’ queue; in PM, SB double left turn has

    300’ queue

    Relocates SR 896 closer to Lea Eara Farms and

    has direct impact on proposed Rothwell Village

    (Brown North)

    AdvantagesEliminates existing SR 896 sharp curve/traffic signal

    Provides “Half-diamond” with north-serving ramps

    for local SR 896 traffic and free flow for US 301

    from Summit Bridge on to New US 301

    Description

    Provides Loop ramp for Southbound SR 896

    Description

    Eliminates existing sharp curve/traffic signal

    Slows traffic down by using ramp movements

    SR 896

    Advantages

    Traffic volume near capacity on single-lane loopramp (year 2030) – likely requires two-lane loop

    Loop ramp constraints may not alleviate safetyconcerns – speed of southbound vehicles comingoff Summit Bridge onto loop ramp – driverexpectation

    Disadvantages

    Existing signalized intersection of US 301 / SR896 and Bethel Church Road is located on asharp curve at the base of Summit Bridge. Thislocation has a history of serious accidents:

    Accidents between 9/99 and 10/04

    - Resulting in 54 injuries and 3 fatalities

    What is being done to improve the sharp curve and the traffic signalon the curve south of Summit Bridge?

    Both at-grade intersections and grade-separated interchanges have been evaluated:

    No

    Interchange South of Summit Bridge

    Public WorkshopsPublic Workshops20,60020,6009,7009,7003,3003,300

    22,50022,50022,50022,500

    --------

    --------

    Spur Rd, South of OldSpur Rd, South of Old

    SchoolhouseSchoolhouse

    Choptank, South of OldChoptank, South of Old

    SchoolhouseSchoolhouse

    Spur Rd, North ofSpur Rd, North of

    ChurchtownChurchtown

    Choptank, North ofChoptank, North of

    ChurchtownChurchtown

    US 301 Traffic Projections

    6,6006,600

    15,20015,200

    3,1003,100

    27,50027,500

    5,4005,400

    22,50022,500

    6,2006,200

    Green + SpurGreen + Spur

    (Full Access)(Full Access)

    Green + Spur (No Access)Green + Spur (No Access)

    No Build (2030)No Build (2030)

    Existing (2003)Existing (2003)

    DisadvantagesAdvantages

    “What are the advantages and disadvantages of providinglocal access to/from the Spur?”

    “Would an at-grade intersection work at the south end of Summit Bridge(US 301/SR 896/SR 15)?”

    Provides access for local residents

    Would keep speeds lower on SpurRoad, closer to a true parkway concept

    Would reduce traffic on the section ofChoptank Road north of ChurchtownRoad compared to spur options with nolocal access

    All at-grade intersection options fail (LOS E with LOS F)

    Traffic safety would continue to be an issue

    May accelerate or encourage further developmentalong roadways with access to the spur in bothDelaware and Maryland (Old Schoolhouse Road,Churchtown Road and Bethel Church Road)

    Provides more toll free connectivity to the spur forWestown, Southridge, and other Middletowncommunities west of US 301, increasing volumeson southern Choptank Road. About 1,900 vpd areprojected to use Old Schoolhouse Road to accessSpur, rather than Levels Road (toll).

    Potential safety issues – intersection vs. freeflowing traffic

    Potential noise issues – braking, stopping andstarting at intersections

    No-Build and YELLOWNoNo--Build andBuild and YELLOWYELLOW

    F

    PURPLE & GREEN

    With Spur

    PURPLEPURPLE && GREENGREEN

    With SpurWith Spur

    E/FF F

    BROWNBROWNBROWN

    FF F

    E

    PURPLEPURPLE && GREENGREEN w/o Spurw/o Spur

    With Improved US 301With Improved US 301

    EF

    Same as Option 3, plus provides local access

    at Churchtown Road and Old Schoolhouse Road

    Requires traffic signals at the two additional

    intersections along the spur

    ROAD EXTENDED

    ROAD EXTENDED

    ROAD EXTENDED

    BETHEL CHURCHBETHEL CHURCH

    INTERCHANGE OPTIONS SOUTH OF SUMMIT BRIDGE - ( SR 15 / SR 896 )INTERCHANGE OPTIONS SOUTH OF SUMMIT BRIDGE - ( SR 15 / SR 896 )INTERCHANGE OPTIONS SOUTH OF SUMMIT BRIDGE - ( SR 15 / SR 896 )

    Disadvantages

    AdvantagesEliminates the existing sharp curve/trafficsignal

    Diamond interchange ramp would act as bufferbetween Spur Road and Summit Bridge Farms

    Provides full vehicular access in all directions forlocal communities

    SR 896

    Requires heaviest local traffic movements(SB & NB SR 896) to use signalized intersections

    Interchange is adjacent to Summit Bridge Farmscommunity

    DescriptionProvides a “full diamond” interchange with

    free-flow from Summit Bridge to the Spur

    Disadvantages

    AdvantagesMaintains free flow of heaviest localmovements (NB + SB SR 896) at the “Y”interchange

    Improves the existing sharp curve on SR 896and eliminates the traffic signal on the curve

    Locates directional “Y” interchange fartheraway from Summit Bridge Farms than Option 1

    Description

    Description

    Provides a directional “Y” interchangebetween Spur and SR 896

    Improves the sharp curve on SR 896 tocurrent design standards and eliminatesthe signalized intersection on the curve

    Relocates access from SR 15 to SR 896(on sharp curve) to an east-west extensionof Bethel Church Road from ChoptankRoad to the Spur Road

    DisadvantagesCreates circuitous access for SR 15 traffic west of SR 896seeking access to SR 896 (via Bethel Church Road (adjacentto Lea Eara Farms) and Old Summit Bridge Road)

    Results in 6,200 and 6,900 vehicles per day on BethelChurch Road and Old Summit Bridge Road (east of existingUS 301/SR 896)

    Requires minor modification of existing SR 896 / Old SummitBridge Road intersection

    Increased construction costs (number of structures)

    The northbound Spur Road is elevated, adjacent to SummitBridge Farms and Lea Eara Farms communities

    DescriptionProvides a directional “Y” interchange between

    SR 896 and Spur

    Grade separates SR 15 over the Spur Road and

    SR 896

    Improves the sharp curve on SR 896 to current

    design standards and eliminates the traffic signal

    on the curve

    BROWNNORTH & SOUTH

    BROWNNORTH & SOUTH

    BROWNNORTH & SOUTH

    BROWNNORTH & SOUTH

    Disadvantages* Green+Spur used as example, Purple+spur provides similar results

    Right-In / Right-OutAccess Only

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