Mandatory Referral Review Submission1919 Retaining Walls and Noise BarriersRetaining Walls and Noise...

11May 1, 2006

Mandatory Referral Review SubmissionMandatory Referral Review Submission

Montgomery CountyMaryland-National Capital Park and Planning Commission

22

Table of ContentsTable of Contents• Part 1: Bridges, Retaining Walls, Noise Barriers

Bridges (General) 3Overpass Bridges 6Bridges in Parks 17Retaining Walls / Noise Barriers 19Olde Mill Run Deckover 20Noise Barrier Options 21

• Part 2: Traffic Elements 25Sign Structures 26Toll Gantries 27Traffic Barrier – W-beam 28Roadway Lighting 29

• Part 3: Landscape ArchitectureContext / Character 30Plan Development 31Planting Zones 32

• Part 1: Bridges, Retaining Walls, Noise BarriersBridges (General) 3Overpass Bridges 6Bridges in Parks 17Retaining Walls / Noise Barriers 19Olde Mill Run Deckover 20Noise Barrier Options 21

• Part 2: Traffic Elements 25Sign Structures 26Toll Gantries 27Traffic Barrier – W-beam 28Roadway Lighting 29

• Part 3: Landscape ArchitectureContext / Character 30Plan Development 31Planting Zones 32

33

Aesthetic ElementsAesthetic Elements

TrafficTraffic

StructuresStructuresLandscapeLandscape

ArchitectureArchitecture

44

Aesthetic Approach to BridgesAesthetic Approach to Bridges

• Create visual continuity by establishing an ICC statement for “visible” bridges

• Most significant opportunity is for roads spanning over ICC

Establish community gateways at key areas (Olde Mill Run Deckover, MD 97, MD 182, MD 650)Provide complementary variety along corridor – gateways flanked by stone overpass and then granite overpass

• Interchange Bridges and Environmental Crossings will have some consistent details with flexibility in type of superstructure

• Create visual continuity by establishing an ICC statement for “visible” bridges

• Most significant opportunity is for roads spanning over ICC

Establish community gateways at key areas (Olde Mill Run Deckover, MD 97, MD 182, MD 650)Provide complementary variety along corridor – gateways flanked by stone overpass and then granite overpass

• Interchange Bridges and Environmental Crossings will have some consistent details with flexibility in type of superstructure

55

General ThemeGeneral Theme

• Inviting open appearance

• Pleasing curved shapes

• Softer edges

• Earth tone colors

• Natural textures – stone, granite, fractured fin

• Inviting open appearance

• Pleasing curved shapes

• Softer edges

• Earth tone colors

• Natural textures – stone, granite, fractured fin

66

Community GatewaysCommunity Gateways

6

• Stone textures in elevation

• Pilasters to visually anchor ends

• Ornamental fence and light fixtures

• Curved top to wingwalls

• Granite texture in pier

• Formliner appearance stained gray with earth tone highlights

77

Stone OverpassStone Overpass

• Similar textures to gateways

• Emphasize horizontal nature

• Eliminated pilasters, ornamental fence and lights

88

Granite OverpassGranite Overpass

• Light granite texture in elevation

• Similar staining technique

• Fractured fin formliner in pier

99

Consistent Features forBridges over ICC

Consistent Features forBridges over ICC

• Steel Haunched Girders of Weathering Steel

• Stub abutments with curved cheekwalls and rounded corners

• Stone formliners stained gray with earthtone highlights

1010

Consistent Features forBridges over ICC

Consistent Features forBridges over ICC

• Riprap slope protection with earth tone colors banded by large pavers in end slopes and medians

• Piers reflect curved shape in elevation and end view

• Formliner stained gray with earthtone highlights

1111

Bridges over ICCBridges over ICCMuncaster Mill

1212

Bridges over ICCBridges over ICCMuncaster Mill Emory Lane

1313

Bridges over ICCBridges over ICCMuncaster Mill Emory Lane MD 97

1414

Bridges over ICCBridges over ICCMuncaster Mill Emory Lane MD 97 Norbeck

1515

Bridges over ICCBridges over ICCMuncaster Mill Emory Lane MD 97

Longmeade

Norbeck

1616

Bridges over ICCBridges over ICCMuncaster Mill Emory Lane MD 97 Norbeck

Longmeade

1717

Bridges in ParksBridges in Parks

• Stub abutments with curved cheekwalls and rounded corners

• Granite formliner in abutments and parapets

• Curved shaped piers with fractured fin formliner

• Steel or concrete girder allowed• Parapet with railing

• Stub abutments with curved cheekwalls and rounded corners

• Granite formliner in abutments and parapets

• Curved shaped piers with fractured fin formliner

• Steel or concrete girder allowed• Parapet with railing

Baseline for park bridges will have some consistent details with flexibility in type of superstructure

1818

Bridges in ParksBridges in Parks

• Signature Arch Bridge• Concrete arches and girders• Curved cheekwalls with

rounded corners• Granite formliner in

abutments and parapet

• Signature Arch Bridge• Concrete arches and girders• Curved cheekwalls with

rounded corners• Granite formliner in

abutments and parapet

• Parapet with railing• Parapet with railing

1919

Retaining Walls and Noise BarriersRetaining Walls and Noise Barriers

• Taller retaining walls incorporate large random cut stone pattern

• Flexibility in smaller walls allowing stone or granite patterns

• Four noise barrier options on roadway side provide variety while complementing other corridor aesthetics

• Community side of noise barriers will have choice of fuzzy rake or exposed aggregate finishes

• Taller retaining walls incorporate large random cut stone pattern

• Flexibility in smaller walls allowing stone or granite patterns

• Four noise barrier options on roadway side provide variety while complementing other corridor aesthetics

• Community side of noise barriers will have choice of fuzzy rake or exposed aggregate finishes

2020

Portal Walls atOlde Mill Run Deckover

Portal Walls atOlde Mill Run Deckover

2121

Noise Barriers – Option 1Noise Barriers – Option 1

Fractured fin with granite band inmiddle

2222

Noise Barriers – Option 2Noise Barriers – Option 2

Fractured fin with granite band on top

2323

Noise Barriers – Option 3Noise Barriers – Option 3

Stone with concreteposts

2424

Noise Barriers – Option 4Noise Barriers – Option 4

Stone and granitecombination

2525

Traffic ElementsTraffic Elements

• Incorporate curved shapes and rounded elements

• Use earth tone colors

• Provide durable, lasting appearance

• Incorporate curved shapes and rounded elements

• Use earth tone colors

• Provide durable, lasting appearance

2626

Sign Structures - OverheadSign Structures - Overhead

• Curved round supports• Multiple signs same height aligned with bottom chord• Fusion bonded polyester powder coating over galvanized

steel to achieve dark brown color

• Curved round supports• Multiple signs same height aligned with bottom chord• Fusion bonded polyester powder coating over galvanized

steel to achieve dark brown color

2727

Toll GantriesToll Gantries

• Similar appearance to overhead sign structures• Curved round supports• Dark brown color• Trailing gantries behind sign structures

• Similar appearance to overhead sign structures• Curved round supports• Dark brown color• Trailing gantries behind sign structures

2828

Traffic Barriers W-BeamTraffic Barriers W-Beam

• Weathering steel guardrail along roadway edges

• Metalized posts below grade• Dark brown painted metalized

connections to concrete barriers

• Weathering steel guardrail along roadway edges

• Metalized posts below grade• Dark brown painted metalized

connections to concrete barriers

2929

Roadway LightingRoadway Lighting

• Cobra Head• Curved light poles• Fusion bonded polyester powder

coating over galvanized steel to achieve dark brown color

• Cobra Head• Curved light poles• Fusion bonded polyester powder

coating over galvanized steel to achieve dark brown color

3030

Forest

Meadow

HistoricResidential

LANDSCAPE ARCHITECTURECONTEXT AND CHARACTER

LANDSCAPE ARCHITECTURECONTEXT AND CHARACTER

3131

Concept Plan Development

Site Analysis

Design Development

Construction Document

3232

Planting Zone TypesPlanting Zone Types• Bridge Abutment/

Embankment

• Bike Trail Area

• Cashell Farm MOA

• Deckover Structure

• Forest Edge

• Interchanges/Gateways

• Median

• Roadside Screening

• Street Tree

• Storm Water Management Area

• Sound Barrier/Retaining Wall

3333

Planting Zone TypesPlanting Zone Types• Bridge Abutment/

Embankment

• Bike Trail Area

• Cashell Farm MOA

• Deckover Structure

• Forest Edge

• Interchanges/Gateways

• Median

• Roadside Screening

• Street Tree

• Storm Water Management Area

• Sound Barrier/Retaining Wall

3434

Planting Zone TypesPlanting Zone Types• Bridge Abutment/

Embankment

• Bike Trail Area

• Cashell Farm MOA

• Deckover Structure

• Forest Edge

• Interchanges/Gateways

• Median

• Roadside Screening

• Street Tree

• Storm Water Management Area

• Sound Barrier/Retaining Wall

3535

Planting Zone TypesPlanting Zone Types• Bridge Abutment/

Embankment

• Bike Trail Area

• Cashell Farm MOA

• Deckover Structure

• Forest Edge

• Interchanges/Gateways

• Median

• Roadside Screening

• Street Tree

• Storm Water Management Area

• Sound Barrier/Retaining Wall

3636

Planting Zone TypesPlanting Zone Types• Bridge Abutment/

Embankment

• Bike Trail Area

• Cashell Farm MOA

• Deckover Structure

• Forest Edge

• Interchanges/Gateways

• Median

• Roadside Screening

• Street Tree

• Storm Water Management Area

• Sound Barrier/Retaining Wall

3737

Planting Zone TypesPlanting Zone Types• Bridge Abutment/

Embankment

• Bike Trail Area

• Cashell Farm MOA

• Deckover Structure

• Forest Edge

• Interchanges/Gateways

• Median

• Roadside Screening

• Street Tree

• Storm Water Management Area

• Sound Barrier/Retaining Wall

3838

Planting Zone TypesPlanting Zone Types• Bridge Abutment/

Embankment

• Bike Trail Area

• Cashell Farm MOA

• Deckover Structure

• Forest Edge

• Interchanges/Gateways

• Median

• Roadside Screening

• Street Tree

• Storm Water Management Area

• Sound Barrier/Retaining Wall

3939

Planting Zone TypesPlanting Zone Types• Bridge Abutment/

Embankment

• Bike Trail Area

• Cashell Farm MOA

• Deckover Structure

• Forest Edge

• Interchanges/Gateways

• Median

• Roadside Screening

• Street Tree

• Storm Water Management Area

• Sound Barrier/Retaining Wall

4040

QUESTIONS&

COMMENTS

QUESTIONS&

COMMENTS