(A) Street pavement. The design of street pavement for all streets covered by this regulation shall be in accordance with the state’s Department of Transportation pavement design standards. The designed thickness of the surfacing elements shall be in accordance with the flexible pavement design standard for road classifications as shown below. However, a minimum of six inches of class 5 aggregate base and three inches of bituminous surfacing is required. This bituminous surfacing shall consist of one and one-half inches of bituminous base course and one and one-half inches of bituminous wear course. More stringent design may be required by the City Engineer based on existing soil conditions. The final bituminous wear course shall be place no sooner that one year after the date that the bituminous base course is placed.
Classification | Pavement Design: Axle Load |
Arterials, collector street needs | As determined by traffic |
Local streets | 7-ton minimum |
(B) Soil tests. To determine subgrade soil classifications and existing pavement section thickness, soil samples shall be collected and analyzed by an independent, certified testing laboratory. Soil samples shall be taken along the center line of the proposed road at intervals not exceeding 300 feet.
(C) Curb and gutter. Concrete curb and gutter will be constructed on both sides of urban design streets. Where required, the construction of concrete curb and gutter shall be in accordance with section 2531 of MNDOT’s Standard Specifications for Construction and shall be either barrier or surmountable type curb. Bituminous curbs will not be allowed.
(D) Boulevards. All boulevards shall have a minimum of four inches of top soil (black dirt) placed on them and then be seeded or sodded.
(E) Aggregate shoulders. The aggregate shoulders constructed on rural design roadways shall consist of a four-foot wide section consisting of a minimum of two inches of class 2 aggregate.
(Prior Code, § 20-24)