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Revisions/updates to the Alberta Transportation "Highway Geometric Design Guide" and CB6 highway standard plates

Description

This design bulletin revises and updates the Alberta Transportation, Highway Geometric Design Guide and the CB6 Highway Standard Plates.

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Provincial highway service classification system and provision of additional pavement width to allow for two future overlays

Description

This design bulletin outlined a new highway service classification system adopted by Alberta Transportation as a result of a study completed by the department to review the previous classification... More ≫

Description

This design bulletin outlined a new highway service classification system adopted by Alberta Transportation as a result of a study completed by the department to review the previous classification system. The primary methodology used in the study was to identify the functional purpose of highways in the province. PLEASE NOTE: the design bulletin and all related materials in this record have been superseded by the Highway Geometric Design Guide. See Usage Considerations for additional information.

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Median acceleration lane design guidelines

Description

This Design Bulletin provides guidelines for the utilization of median acceleration lanes on divided highways under Alberta Transportation’s jurisdiction.

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Design exception request process

Description

The intent of Design Standards/Practice Exceptions is to determine, justify and document that good engineering judgment is being exercised.

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Roundabout design guidelines on provincial highways

Description

This Bulletin supersedes Bulletin 31 concerning the policy and guidelines for the use of roundabouts on roadways under Alberta Transportation’s direction and control.

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Amendment to the highway geometric design guide : section F.2 - highway Safety Rest Areas (SRA)

Description

This bulletin is being issued as an amendment to Alberta Infrastructure and Transportation's (INFTRA) Highway Geometric Design Guide (Updated 1999) and to Design Bulletin #49/2007 (issued May... More ≫

Description

This bulletin is being issued as an amendment to Alberta Infrastructure and Transportation's (INFTRA) Highway Geometric Design Guide (Updated 1999) and to Design Bulletin #49/2007 (issued May 2007). This bulletin also supersedes Design Bulletin #20/2004.

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Considerations for selection of freeway over/under configuration at service interchanges

Description

The Department has accepted the attached document, Considerations for Selection of Freeway Over/Under Configuration at Service Interchanges. The purpose of the document is to provide increased... More ≫

Description

The Department has accepted the attached document, Considerations for Selection of Freeway Over/Under Configuration at Service Interchanges. The purpose of the document is to provide increased guidance to Engineers and Planners and promote a more consistent design philosophy on Alberta Transportation's interchange projects. The document provides a discussion on the selection of either the freeway over or freeway under configuration of service interchanges and a preferred practice on Alberta Highways.

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Highway geometric design guide, centreline to centreline spacing for new rural divided highways

Description

This bulletin is issued to inform practitioners of the department's revised guidelines on the centerline to centerline spacing for new rural divided highway cross section. Where land is considered... More ≫

Description

This bulletin is issued to inform practitioners of the department's revised guidelines on the centerline to centerline spacing for new rural divided highway cross section. Where land is considered to be of lower value (not suitable for cultivation or grazing) the use of a wider median (55m or more is desirable) has many economic advantages resulting from capital, maintenance and operational savings. Where the desirable spacing is not economical, a minimum centerline to centerline spacing of 40 m is acceptable.

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Median crossovers on rural divided highways

Description

This Bulletin is issued to provide guidance to planners and designers regarding the spacing, placement, signing and geometric details of median crossovers on rural divided highways in Alberta.... More ≫

Description

This Bulletin is issued to provide guidance to planners and designers regarding the spacing, placement, signing and geometric details of median crossovers on rural divided highways in Alberta. There is a need to consider roadside safety, highway operations, access management, access by emergency and law enforcement vehicles and cost when designing median crossovers on divided highways. Between interchanges and/or at-grade intersections, emergency crossovers should normally be spaced at between 5 and 6.5 km intervals. Exceptions may be made where necessary for access however these additional crossovers should be considered temporary and subject to removal when alternate access is provided.

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Highway geometric design guide : Chapter B, climbing lane warrants for two lane undivided and four lane divided highways - revised

Description

This Design Bulletin is being issued as an amendment to Chapter B.5.3.1 – Climbing Lane Warrants for Two Lane Undivided Highways and Chapter B.5.3.2 – Climbing Lane Warrants for Four Lane Divided... More ≫

Description

This Design Bulletin is being issued as an amendment to Chapter B.5.3.1 – Climbing Lane Warrants for Two Lane Undivided Highways and Chapter B.5.3.2 – Climbing Lane Warrants for Four Lane Divided Highways of the Alberta Transportation Highway Geometric Design Guide 1995, Updated 1999. The revisions are needed due to changes in vehicle performance, average running speeds and due to a need to make all geometric improvements cost-effective.

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