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Alberta weak post W-Beam barrier system and impact attenuators : Alberta Transportation roadside design guide, November 2007

Description

This Bulletin is being issued as a revision and/or update to the Alberta Transportation’s Roadside Design Guide, November 2007 (AT RDG).

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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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Vehicle inspection stations / rest areas in highway median

Description

The provision of facilities in the median of highways is often the subject of discussion at the time of planning, design and construction of divided highways in Alberta. The purpose of this... More ≫

Description

The provision of facilities in the median of highways is often the subject of discussion at the time of planning, design and construction of divided highways in Alberta. The purpose of this Bulletin is to inform designers, planners and other staff and consultants working for Alberta Transportation regarding the department’s position on this subject. There have been cases where median facilities such as Vehicle Inspection Stations have been permitted in the past due to special constraints. As a department policy the construction of new median facilities is not normally permitted.

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Errata to the roadside design guide, November 2007

Description

This Bulletin is being issued of Errata to the Alberta Transportation’s Roadside Design Guide, November 2007.

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Slip-formed concrete barrier F-shape

Description

The department currently has a typical drawing CB6-4.3M3, for an un-reinforced Full F-Shape concrete barrier constructed by slip-form. The need for a typical drawing for an un-reinforced Half... More ≫

Description

The department currently has a typical drawing CB6-4.3M3, for an un-reinforced Full F-Shape concrete barrier constructed by slip-form. The need for a typical drawing for an un-reinforced Half F-Shape barrier constructed by slip-form has arisen on a recent project. A new typical drawing has been developed by the department and is being issued under this Design Bulletin. The slip-formed Half F-shape concrete barrier shall be used with earth fills as shown on drawing CB6-4.3M3A. The earth fill provides lateral support for the Half F-Shape concrete barrier.

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Divided highway cross section with C-D road or exit ramp/entrance ramp on Alberta highways

Description

This Bulletin is issued to inform practitioners of the current standard cross-section that should be applied for new construction and /or major reconstruction on Alberta highways. The standard... More ≫

Description

This Bulletin is issued to inform practitioners of the current standard cross-section that should be applied for new construction and /or major reconstruction on Alberta highways. The standard cross-section attached shows the “minimum” dimensions that should be achieved at structures (normally interchanges) and the cross-section away from structures.

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Drainage guidelines for highways under provincial jurisdiction in urban areas

Description

This Design Bulletin identifies relevant design criteria and considerations for highway drainage and stormwater management in urban areas that have now been approved by the department for... More ≫

Description

This Design Bulletin identifies relevant design criteria and considerations for highway drainage and stormwater management in urban areas that have now been approved by the department for immediate implementation.

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Paving and upgrading of highway intersections with gravel/paved roadways at the time of grading or first stage paving and final paving or pavement rehabilitation

Description

This Bulletin is being issued as an amendment to the Department’s CB6 Standard Drawings, as drawings CB6-3.4M2, CB6-3.4M3 and CB6-3.50M3 are no longer consistent with normal practices on Alberta Highways. More ≫

Description

This Bulletin is being issued as an amendment to the Department’s CB6 Standard Drawings, as drawings CB6-3.4M2, CB6-3.4M3 and CB6-3.50M3 are no longer consistent with normal practices on Alberta Highways.

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