Agenda - Parks and Recreation Commission - 01/12/1995

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Feb. 8, 198.9 BIKEWAYS I I . (a) Designate the type and character of vehicles or other modes of [ravel which may be operated on a bicycle lane or bicycle way, provided that the operation of such vehicle or other mode of travel is not inconsistent with the safe use and enjoyment of the bicycle lane or bicycle way by bicycle traffic. (b) Establish priority of right-of, way on the bicycle lane or bicycle way and otherwise regulate the use of the bicycle lane or bicycle way as it deems necessary. (c) Paint lines or construct curbs or establish other physical separation~ to exclude the use of the bicycle lane or bicycle way by vehicles other than those specifically permitted to operate thereon. The designating governing body may after public hearing, prohibit through traffic on any highway or portion thereof designated as a bicycle lane, except that through traffic may not be prohibited on a trunk highway. The designating governing body shah erect and maintain official signs giving notice of the regulations and priorities estab. fished under this subdivision, and shall mark all bicycle lanes and bicycle ways with appropriate signs. Subd. 4. Speed on street with bicycle lane. Notwith- standing section 169.14, subdivision 5, the governing body of any political subdivision, by resolution or ordinance and without an engineering or traffic investigation, may designate a safe speed for any street or highway under its authority upon which it has established a bicycle lane; provided that such safe speed shall not be lower than 25 miles per hour. The ordinance or resolution desig- nating the speed are erected along the street or highway, as provided by the governing body. VIII. EROSION CONTROL DURING BIKEWAY CONSTRUCTION There is a lot of data available regarding erosion on construction projects. Basically, on a unit area basis, construction is one of the highest sediment yielding activ- ities known. Since bikeway construction is similar to roadway construction except on a 'reduced scale, most of the erosion control methods and devices used on roadway construction may also be used on bikeway construction. Erosion, the resutdng sediment and the deposition of that sediment can cause property damage, water quality problems and safety problems. Kill and gully erosion immediately adjacent to a bikeway represents a real safety hazard to any bicyclist who leaves the riding surface, and if the erosion is allowed to progress it may cause damage to the riding surface and/or other related structures. There- fore erosion control methods must be incorporated into the design, construction and maintenance of bikeways. qO In general, bikeways that are part of the roadway or shoulder, will not necessitate any additional erosion control efforts other than those provided in normal road con- strucfion. An exception to this would be the construction of a rural roadway with a bikeway on the roadway shoulder. In order to provide additional protection against the formation of rills and gullies on the inslope adjacent to the bikeway it may be necessary to place a material such as wood fiber blanket, plastic netting over straw mulch or sod. An off. road bikeway is completely separated from vehicular traffic with its own or sharing another facihdes right-of.way, erosion control for its construction will often be independent from but in most respects similar to erosion control practices used on roadway construction. Therefore, an understanding of roadway erosion control methods and materials is needed. The remaining P0rdon of this section will classify erosion control methods into three types, and give examples and references for each type. Erosion control methods can be classified as temporary. permanent, and/or regulatory. Temporary erosion control methods include such items as bale ditch stops, temporary flexible down drains, and temporary seeding (oats or rye). Temporary erosion control items are short life items which are intended to supplement but not perform in place of permanent erosion control measures. Permanent erosion control methods include such items as riprap, culverts, aprons, sod, permanent turf establish- ment, sediment ponds, dams and shaping. Permanent erosion control items are long life items. Information on permanent and temporary erosion control items may be found in the following: 1. Mn/DOT "Road Design Manual". 2. MHD "Erosion Prevention and Turf Establish- ment Manual"; 1970 by L.E. Foote, D. L. Kill and A. H. Bolland. 3. Mm/DOT "Standard Specification for Highway Construction"; current edition, sections 2105. 2575 and 3861. 3885. There are numerous regulatory methods by which to control erosion. Mainly these methods are geared towards reducing or limiting the amount of time which elapses between initial disturbance and project completion. An excellent example is the withholding of funds or payment with release of these funds being made in proportion to the amount of erosion control and turf establishment items which have been completed. Examples of regulatory I I I I I ! i I I ! ! I I I ! I i