Record Of Decision For Us Highway 93 Ninepipe Ronan Improvement Project Lake County Montana

The proposed action is the improvement of an 18-kilometer (11.2-mile) segment of US 93 from Dublin Gulch Road/Red Horn Road through the City of Ronan to Baptiste Road/Spring Creek Road in Lake County, Montana. The improvements are proposed to provide a facility that meets current design standards in order to enhance the safety and operation of the facility. A No-Action Alternative, and 10 widening alternatives are analyzed for the rural portion of the project, ranging from minor widening and improvement of the two-lane roadway with a cross-section of 12 meters (40 feet) to widening and improvement to a four-lane roadway cross section of 33.6 meters (112 feet). This document also analyzes a No-Action Alternative and five action alternatives for the urban portion of the project through the City of Ronan. These alternatives range from improving the roadway within the existing right-of-way to widening outside the existing roadway to a split couplet, with southbound lanes relocated to an adjacent street. Alternatives Rural 3, a widened two-lane roadway with a single north bound climbing/passing lane on Post Creek Hill and a short four-lane divided section south of Ronan, and Ronan 4, a couplet with improved intersections and two lanes in each direction about a block a part, are the preferred alternatives. In addition, a 3.0-meter (10-foot) wide separated pedestrian/bicycle path will be included for the entire length of the project as part of the preferred alternative.

TRB's National Cooperative Highway Research Program (NCHRP) Synthesis 305: Interaction Between Roadways and Wildlife Ecology summarizes existing information related to roadway planning, design, construction, operation, and maintenance practices being used successfully and unsuccessfully, nationally and internationally, to accommodate wildlife ecology given the challenging background of rapid growth and diminishing natural resources.

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