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OR 42: County Line Curves Environmental Assessment Purpose and Need February 17, 2009.

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Presentation on theme: "OR 42: County Line Curves Environmental Assessment Purpose and Need February 17, 2009."— Presentation transcript:

1 OR 42: County Line Curves Environmental Assessment Purpose and Need February 17, 2009

2 Purpose The purpose of the project is to cost effectively address safety issues in the OR 42 corridor between mile posts 41.0 and 46.0

3 Need Crash rate is three times higher than state average for Rural Principal Arterial Crash rate is three times higher than state average for Rural Principal Arterial Two Safety Priority Index System (SPIS) sites – east end of project: Two Safety Priority Index System (SPIS) sites – east end of project: -Mile Post to Mile Post to Three fatal crashes ( ) Three fatal crashes ( )

4 Need Safety Investment Program (SIP) sites: Safety Investment Program (SIP) sites: -Mile Post 41.0 to 45.0 = Category Two -Mile Post 45.0 to 46.0 = Category Three -Category Three, Four, or Five are priorities for safety improvement funding

5 Total Crashes By Mile Post

6 Crash Rate By Mile Post

7 Crash History ( )

8 Need Roadway geometry does not meet current design standards Roadway geometry does not meet current design standards At least 21 curves exceed the maximum degree of curvature for Rural Principal Arterial At least 21 curves exceed the maximum degree of curvature for Rural Principal Arterial

9 Existing Conditions

10 Goals Improve safety in the corridor for all users Improve safety in the corridor for all users Develop cost-effective solutions Develop cost-effective solutions Improve traffic flow (mobility) through the project area Improve traffic flow (mobility) through the project area Minimize impacts to environmental resources Minimize impacts to environmental resources

11 Improve safety in the corridor for all users Remove substandard curves and roadway geometry Remove substandard curves and roadway geometry Improve sight distance Improve sight distance Increase shoulder width Increase shoulder width Mitigate geohazards (rock fall and slides) Mitigate geohazards (rock fall and slides)

12 Develop cost-effective solutions Accommodate phased construction as funds are made available over time Accommodate phased construction as funds are made available over time Make use of the existing road and facilities where feasible Make use of the existing road and facilities where feasible

13 Improve traffic flow (mobility) through the project area Meet design standards Meet design standards Meet projected travel demands for the vehicle types using the corridor for at least twenty years into the future Meet projected travel demands for the vehicle types using the corridor for at least twenty years into the future Reduce the number of locations with advisory speeds lower than the design speed Reduce the number of locations with advisory speeds lower than the design speed

14 Improve traffic flow (mobility) through the project area Maintain access to adjacent properties Maintain access to adjacent properties Provide passing opportunities Provide passing opportunities Minimize travel delays and detours during construction Minimize travel delays and detours during construction

15 Minimize impacts to environmental resources Avoid or minimize potential impacts to unstable slopes that increase the potential for slides Avoid or minimize potential impacts to unstable slopes that increase the potential for slides Avoid or minimize impacts to native species and their habitats including those listed or proposed for listing under the Endangered Species Act Avoid or minimize impacts to native species and their habitats including those listed or proposed for listing under the Endangered Species Act

16 Minimize impacts to environmental resources Avoid or minimize impacts to aquatic resources--which include the Middle Fork Coquille River, its floodplain and tributaries, and freshwater wetlands Avoid or minimize impacts to aquatic resources--which include the Middle Fork Coquille River, its floodplain and tributaries, and freshwater wetlands Provide stormwater treatment and control Provide stormwater treatment and control

17 Minimize impacts to environmental resources Minimize impacts to mature riparian vegetation Minimize impacts to mature riparian vegetation Avoid impacts to archaeological, historic, and cultural resources Avoid impacts to archaeological, historic, and cultural resources

18 All Options

19 Questions?


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