8820.9926 Minimum Design Standards: Rural And Suburban Undivided; Reconditioning Projects


Published: 2015

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8820.9926 MINIMUM DESIGN STANDARDS: RURAL AND SUBURBAN UNDIVIDED; RECONDITIONING PROJECTS.


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Subpart 1.

Minimum reconditioning standards.

Reconditioning projects for rural or suburban undivided roadways must meet or exceed the minimum dimensions indicated in the following design chart. See part 8820.0200, subpart 30, for the description of activities allowed.


Existing ADT
Statutory or Regulatory Posted Speed
Lane Width (Paved)
Combined Lane (Paved) and Shoulder Width


1-749
Under 50 mph
10 feet
11 feet


1-749
50 mph or over
10 feet
12 feet


750 and over
Under 50 mph
10 feet
12 feet


750 and over
50 mph & over
11 feet
14 feet


When the road authority has determined that the roadway will be specifically designed to include on-road bicycle facilities, and only if the roadway surface is paved, the appropriate design criteria in the current MnDOT Bikeway Facility Design Manual are recommended for design purposes.
Engineering judgment should be used to choose a lane-width, on-road bicycle facility, or shoulder width dimension other than the widths indicated in the chart. Factors to consider include safety, speed, population/land use, benefit/cost analysis, traffic mix, peak hourly traffic, farm equipment, environmental impacts, terrain limitations, bicycle traffic, pedestrian traffic, on-street parking, intersection and driveway spacing, rights-of-way constraints, vehicle turn lane configuration, sight distance, sight lines, bus routes, other nonmotorized uses, functional classification, or other factors. Dimensions less than those indicated in the chart require a variance in accordance with parts 8820.3300 and 8820.3400.
Widths of bridges to remain in place must equal roadway pavement width. Bridges narrower than these widths may remain in place provided that the bridge does not qualify for federal-aid bridge funds. H 15 inventory rating is required.
Any highway that was previously built to state-aid or state standards, that was granted a variance to standards in effect at the time of construction or reconstruction, or that is a trunk highway turnback, may be reconditioned.
The proposed structural design strength must accommodate a minimum of seven tons per axle.


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Subp. 2.

[Repealed, 23 SR 1455]