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Layer: Interstates (ID: 0)

Name: Interstates

Display Field: ROADNAMELOCAL

Type: Feature Layer

Geometry Type: esriGeometryPolyline

Description: Road Centerlines data consists of linear features which represent the street centerline for all public roadways in the State of Maryland. Road Centerlines data is segmented for each intersecting feature along a route, which means multiple linear features may represent a single route. This layer specifically shows the Interstate (IS) roadways and Interstate ramps (RP) throughout the State of Maryland. Road Centerlines data is the end product of a statewide data sharing process between the Federal Highway Administration (FHWA), Maryland Department of Transportation (MDOT), Maryland Department of Transportation State Highway Administration (MDOT SHA), county goverments and local municipal governments. Using a common centerline allows for better exchange of information related to the roadway system and provides opportunities for more efficient collection of information about roadway assets. Some centerlines were created in-house using imagery, GPS data, and MDOT SHA's Highway Performance Monitoring System (HPMS) database and others were received from county governments and updated in house using imagery, GPS data and MDOT SHA's HPMS database. The Centerline data includes annual HPMS updates / improvements submitted to the Federal Highway Administration (FHWA). Road Centerlines data is needed for emergency response and management, routing buses and other vehicles, planning for land use and transportation needs, continuity of roadway data and display at county boundaries leading to the same "look and feel" across jurisdictions, tracking assets on and along the roadway network, producing maps at various scales, and numerous other applications. There are opportunities to make these processes more efficient, and this program addresses a shared foundation to solve some of these issues. This data is also used by various modules throughout MDOT, as well as many other State and local government agencies. Road Centerlines data is updated and published on an annual (yearly) basis for the prior year. This data is for the year 2016. For questions, contact the MDOT SHA Geospatial Technologies Team: (GIS@sha.state.md.us)

Definition Expression: N/A

Copyright Text: Federal Highway Administration (FHWA), Maryland Department of Transportation (MDOT), Maryland Department of Transportation State Highway Administration (MDOT SHA), Maryland County Goverments, Maryland Local Municipal Governments, Maryland iMap (MD iMAP)

Default Visibility: true

MaxRecordCount: 65000

Supported Query Formats: JSON, AMF, geoJSON

Min Scale: 0

Max Scale: 0

Supports Advanced Queries: true

Supports Statistics: true

Has Labels: false

Can Modify Layer: true

Can Scale Symbols: false

Use Standardized Queries: true

Supports Datum Transformation: true

Extent:
Drawing Info: Advanced Query Capabilities:
HasZ: false

HasM: false

Has Attachments: false

HTML Popup Type: esriServerHTMLPopupTypeAsHTMLText

Type ID Field: null

Fields:
Supported Operations:   Query   Generate Renderer   Return Updates