Res

ouRc

e Gl

ossa

Ry EAST LINK Light RailIllustrative Glossary Terms

AT-GrAde coupleTRoute located on two parallel roadways in which one direction runs on one road and one direction on the other road. Both routes are at street level.

Bored TunnelExcavation of a tunnel or underground passage by way of a large drilling machine. When a tunnel is bored, surface disturbance is typically limited to stations and portals.

AT-GrAde/SurfAceRoute located at street level.

commuTer rAIlAlso known as “Sounder “in the Central Puget Sound region. A form of daily long distance travel by rail mostly during peak commuting hours. Tracks are usually shared with freight or long-distance passenger trains (Amtrak) and are run by either electric or diesel power (diesel in our region). Typically there is one station in each town or city.

elevATed/AerIAl STrucTureStructure that is raised above the ground; a bridge.

GuIdewAyTrackway of an exclusive rail facility dedicated to the conveyance of train vehicles.

GrAde-SepArATedSeparation of transportation facilities, such as streets and rail lines, in order to eliminate potential conflicts for right-of-way travel.

column/pIerA column or pier provides structural support to an elevated structure. (Tukwila elevated track)

operATIonS And mAInTenAnce (o&m) fAcIlITyFacility designed for the storage and maintenance of transit vehicles. An O & M facility for light rail operations for East Link may be 10 to 20 acres in size and include tracks for outside storage and a building for maintenance and cleaning of vehicles, as well as tracks leading to and from the facility to the main line.

overheAd cATenAry SySTem (ocS)System of overhead contact wires that supplies electrical power to a light rail car.

plATformCan be located on either side of rail tracks or between them. Customers use platforms to enter or disembark trains. Platforms may have ticket vending machines, maps and schedules available.

mezzAnIneAn intermediate floor between main floors of a building. In an elevated train station, the mezzanine would allow for the connection of two loading platforms without the need for crossing railroad tracks and could include ticket dispensing machines, information kiosks and rest areas.

S E A T T L E

M E R C E R

B E L L E V U E

I S L A N D

108THAVE SE

WAY SE

BELLEVUE

W MERCER WAY 78TH

AVE

SE

72ND

AVE SE

92ND

AVE NE

NE 12TH ST

NE 8TH STNE 6TH ST

100TH AVE N

E

76TH AVE SE

SE 36TH ST

MAIN STE CHERRY ST

SE 40TH ST

ISLAND CREST WY

E YESLER WAY

4TH AVE S

AIRPO

RT WAY S

1ST AVE S

RAINIER AVE S

BEACON AVE S

23RD

AVE

BOREN AVE

23R

D A

VE S

E MADISON ST

S JACKSON ST

M L KIN

GJR W

AY S

S SPOKANE ST

LakeWashington

LAKEW

ASHINGTONBLVD

EM

ERCER

WAY

Segment A

Segment A

Segment B

International District/Chinatown Station

Adjacent Segment NCentral Link Alignment and Station

0 0.5 10.25 Mile

Segment LimitA B

To Universityof Washington

To Sea-TacAirport

East Link Projectto be Evaluated in the DEISExhibit: Segment A Alternative

LUTHER

BURBANK

PARK

341526.P1.09.01.EN_TB072006007SEA_Scoping_Report/Maps/Routes_For_EIS/Segment_A_Alt_DEIS_012507 . gr

Route ProfileAt-GradeCity Limits

Proposed Station

Mercer IslandPark & Ride

A1

MERCER

SLOUGH

NATURE

PARK

MERCER

SLOUGH

NATURE

PARK

MERCER SLOUGHNATURE PARK

WilburtonPark &

Ride

South Bellevue Park & Ride

B E L L E V U E

B E A U X A R T SLake

Washington

Me

rce

rS

loug

hW

est

Mer

cer

Slo

ug

hE

ast

Mer

cer

Slo

ug

hE

ast

Kelsey Creek

Segment B

Segment C

Segment B

Segment A

B1 B7

B7

B2-AB3

B1B2-AB3

B3

B3B7B2-A B2-E

B2-E

B2-E

B7

B1B2-AB2-EB3B7

§ 0.25 Mile0.1250

Adjacent Segment

City LimitsProposed Station

Segment LimitA BRoute Profile

At-GradeElevated

East Link Project

Exhibit: Segment B Alternativesto be Evaluated in the DEIS

341526.P1.09.01.EN_TB072006007SEA_Scoping_Report/Maps/Routes_For_EIS/Segment_B_Alts_DEIS_031907 . gr Source: King County (2006) modified by CH2M HILL

SE 8TH ST

123RD

AVE SE

BNSF RRBNSF RR

108THAVE SE

108TH AVE SE

113TH AVE SE

104TH AVE SE

BELLEVUEW

AY SE

BELLEVUEW

AY SE

SE 25TH ST

106TH AVE SE

ESEV

AHT

811

ESEV

AHT

211

LAKEHILLS

CONNECTOR RD

SE 34TH ST

SE 6TH ST

reTAIned cuTA trench; the retention of an excavated area or land by way of a reinforced or stabilized wall in order to create space for a road, structure or train tracks.

SeGmenT AI-90: from the International District/Chinatown Station in Seattle across Mercer Island to the east side of Lake Washington.

SeGmenT BSouth Bellevue: from the east side of Lake Washington through South Bellevue to SE 6th Street in Bellevue.

SeGmenT cDowntown Bellevue: from SE 6th Street through downtown Bellevue to the east side of I-405.

BellevueTransit Center

Lake

Bellevue

Stu

rteva

nt

Cr e

ek

Segment CSegment B Segment C

Segment B

Segment DSegment C

B E L L E V U E

Adjacent Segment

City LimitsProposed Station

Segment LimitB C

Route ProfileTunnelRetained CutAt-GradeElevated

East Link Projectto be Evaluated in the DEISExhibit: Segment C Alternatives

341526.P1.09.01.EN_TB072006007SEA_Scoping_Report/Maps/Routes_For_EIS/Segment_C_Alts_DEIS_032007 . gr Source: King Country (2006)

0.25 Mile0.1250§

C2-T C3-T

C3-T C7-E

C7-E

C1-T

C1-TC2-T

C3-TC4-AC7-EC8-E

C4-A

C4-A

C8-E

C8-E

C7-EC8-E

C8-E

C2-TC3-TC4-AC7-EC8-E

C2-TC3-TC4-AC7-EC8-E

C2-TC3-TC4-AC7-EC8-E

SE 6TH ST

108TH AVE N

E

BELLEVUE W

AY NE

NE 4TH ST

116TH AVE N

E

BNSF RR

BNSF RR

114TH AVE N

E

112TH AVE N

E

AVEN

E106TH

BELLEVUE W

AY NE

NE 10TH ST

108THAVE N

E

110TH AVE N

E

NE 8TH ST

NE 12TH ST

112TH AVE N

E

NE 12TH ST

116TH AVE N

E

MAIN ST

NE 2ND ST

NE 8TH ST

NE 4TH ST

NE 6TH ST

SeGmenT dBel-Red Corridor: from NE 12th Street and 116th Avenue NE to the Overlake Transit Center.

SeGmenT eRedmond: from north of the Overlake Transit Center to downtown Redmond.

"

OverlakeTransit Center

OverlakePark & Ride

R E D M O N D

B E L L E V U E

B E L L E V U E

SegmentD

SegmentC

Segment ESegment D

§ 0 0.25 0.5 MileEast Link Project

Exhibit: Segment D Alternatives to be Evaluated in the DEIS

Adjacent Segment

City LimitsProposed Station

Segment LimitC DRoute Profile

Retained CutAt-GradeElevated

341526.P1.09.01.EN_TB072006007SEA_Scoping_Report/Maps/Routes_For_EIS/Segment_D_Alts_DEIS_012507 . gr Source: King County (2006)

D2-AD2-ED3

D2-AD2-ED3D5

D2-AD2-ED3D5

D2-AD2-ED5D5

D5

D3D2-AD2-ED3

D3

D3

D3

520

520

NE 12TH ST

124THAVE N

E

NE

120TH AVE

NE 16TH ST

116TH AVE N

E

132ND

AVE NE

130TH AVE N

E

136T

H

PL

NE

NORTHUP WAY

NE 24TH ST

NE 40TH ST

134TH AVE N

E

140TH AVE N

E

NE BELLEVUE - REDMOND RD

148TH AVE N

E

156TH AVE N

ENE 20TH ST

151ST AVE NE

152ND

AVE NE

BNSF RR

Kelse

yC

reek

KelseyC

reek

Goff

Cre

ek

Sears Creek

Valley

Cre

ek

West Tributary of Kelsey

Creek

MARYMOOR

PARK

")

OverlakeTransit Center

RedmondPark & Ride

Lake Sammamish

Sammamish River

Bear Creek

Bear Creek

Samamish River

Segment DSegment E

R E D M O N D

341526.P1.09.01.EN_TB072006007SEA_Scoping_Report/Maps/Routes_For_EIS/Segment_E_Alts_DEIS_012507 . gr Source: King County (2006)

0 0.125 0.25 Mile§East Link Project

Exhibit: Segment E Alternatives to be Evaluated in the DEIS

Route ProfileRetained CutAt-GradeElevated

Adjacent Segment

City LimitsProposed Station

Segment LimitD E

520

E1E4

E1E4

E2

E2E4

E1E2E4

E1

BEAR CREEK PKWY

NE 76TH STNE REDMOND WAY

NE 80TH ST

166THAVE N

E

AVON

DALE

RDNE

NE 83RD ST

164TH AVE N

E

LEARY WAY NE

154TH AVE NE

152ND

AVE NE

NE 40TH ST

NE 51ST ST

172ND

AVE NE

156TH AVE N

E

WEST LAKE SAMMAMISHPARKW

AY NE

BNSF RR

OLD REDMONDRD

STAGInG AreAA temporary site used for the storing and staging of construction equipment and material. (Beacon Hill Station)

SuBwAyAn underground railway.

Tunnel porTAlExiting or entry way of a tunnel.

Textual Glossary Terms

AlIGnmenTRoute or path of the train.

BoArdInGS Number of individuals boarding or getting on a train. If you took one train to and from a destination, you would make two (2) boardings during your round-trip.

cATenAry Overhead contact wire that supplies electrical power to a light rail car.

concepTuAl enGIneerInGInitial design steps in a project. Generally taken to represent a 5-10% level of design.

corrIdorGeneralized travel or transportation path. The area on either side of a transportation facility.

cuT-And-cover conSTrucTIonMethod for constructing tunnels, underground stations or other underground facilities close to the surface by excavating from above and then covering the opening with a permanent lid.

denSITyNumber of units in a given area. For example, 100 residential units per acre may be considered a very densely developed acre of land.

envIronmenTAl ImpAcT STATemenT (eIS)Public document that discloses and evaluates the potential environmental impacts of a proposed project. The EIS may be subject to State or Federal requirements.

fInAl deSIGnPreceding actual construction, this final step of engineering design moves the project to the 100% design, ready for construction.

GmAGrowth Management Act. Adopted by the State of Washington to manage projected growth in a coordinated and planned fashion and direct growth to designated areas based on an area’s ability to support said growth.

GrAdeGrade or steepness of a natural or man-made incline or hill.

hcTHigh Capacity Transit. A form of public mass transit systems capable of moving large numbers of passengers along a dedicated right-of-way.

lIGhT rAIlLight rail is an electric railway powered by an overhead power source. Light rail is versatile and flexible enough to run at street level, through tunnels, or in elevated right-of-way, depending on individual routes.

level BoArdInGStation boarding from a platform that is at the same level as the low floor of the train car or bus. Used so those in wheelchairs and strollers are easily and quickly accommodated (no steps needed) and to speed loading.

low-level plATformSStation platforms that are typically 14 inches high.

mITIGATIonSpecific actions required and taken to reduce the scale, size or extent of an identified impact resulting from the implementation of a major construction project.

one SeAT rIdeTrip that can be completed without transferring vehicles.

prelImInAry enGIneerInGAdvances a design to the 30% design level and further develops the details for the project before final design commences.

profIle/verTIcAl AlIGnmenTDetermines whether an alignment is a tunnel, elevated structure or on surface level.

r8AThe preferred alternative adapted by I-90 Two-Way Transit and HOV project. This alternative provides HOV lanes in two existing outer roadways of the I-90 floating bridge creating two-way, all-day HOV lanes for transit and carpools.

reGIonAl TrAnSporTATIon InveSTmenT dISTrIcT/rTIdEntity created by the Washington State Legislature and charged with developing a transportation package to be submitted to voters in the fall of 2007 for improving significant highways and bridges in Snohomish, King or Pierce Counties. RTID is coordinating its work with Sound Transit, which will submit a companion transit proposal to voters.

rIderShIpNumber of passengers who ride public transport systems.

rIGhT-of-wAyEasement or strip of land dedicated to public transportation uses and facilities.

roAdS & TrAnSIT pArTnerShIp Joint effort by Sound Transit and the Regional Transportation Investment District (RTID) to create the first-ever integrated set of highway, bridge and transit improvements for Snohomish, King and Pierce counties.

rouTeSystematically assigned line or course of travel for a specific area or territory.

Sound TrAnSIT BoArd of dIrecTorS18-member appointed governing body of the Central Puget Sound Regional Transit Authority (Sound Transit). The Board establishes policy, provides direction, and performs oversight. Sound Transit is governed by an 18-member Board of Directors; 17 members are local elected officials, and the 18th member is the Washington State Department of Transportation Secretary. Local elected officials include mayors, city council members, county executives, and county council members from within the Sound Transit District. Currently, the Sound Transit Board includes three members from Snohomish County, ten from King County, four from Pierce County, and the State Transportation Department secretary. The Board of Directors are:

John W. Ladenburg, Executive, Pierce CountyConnie Marshall, Councilmember, City of Bellevue, Mark G. Olson VP, City of Everett CouncilJulie Anderson, Councilmember, City of Tacoma, Mary-Alyce Burleigh, Councilmember, City of Kirkland Fred Butler, Deputy Council President, City of IssaquahDow Constantine, Councilmember, King County CouncilDavid Enslow, Mayor, City of SumnerDoug MacDonald, Secretary, WSDOTRichard L. Marin, Councilmember, City of EdmondsRichard J. McIver, Councilmember, City of Seattle Greg Nickels, Mayor, City of SeattleJulia Patterson, Council Vice Chair, King County CouncilLarry Phillips, Councilmember, King County CouncilAaron Reardon, County Executive, Snohomish CountyRon Sims, County Executive, King CountyClaudia Thomas, Mayor, City of LakewoodPeter von Reichbauer, Councilmember, King County Council

STrAddle BenT

On an elevated structure, straddle bent is a bridge structure that straddles both sides of the street. Used when elevated light rail makes a turn.

ST2Sound Transit 2. The second phase of regional transit investments for the Central Puget Sound.

TrAffIc SIGnAl pre-empTIonAbility to over-ride traffic signals in order to give priority to approaching vehicles, such as emergency vehicles. Also used in light rail systems operating at surface level.

TrAffIc SIGnAl prIorITyAllows specially equipped buses or trains to communicate with an approaching traffic signal and ask it to hold the green light for a bus or train. A transponder installed on the bus or train sends a signal to a controller on the traffic light.

TrAnSITIon STrucTureStructure or ramp designed to transition trains from an at-grade facility to an elevated facility.

TrIpS (Are one wAy)Recorded one-way travel via public or private vehicle from the origin of the trip to a destination.

urBAn deSIGnConcerns the arrangement, appearance and functionality of towns, cities and urban open spaces.

wSdoTWashington State Department of Transportation.