S.R. 108 ENVIRONMENTAL IMPACT STATEMENT PROCESS

The National Environmental Policy Act (NEPA) requires an environmental review of all federally funded projects to see how they might affect the surrounding natural and human environments.

The S.R. 108 Environmental Impact Statement should meet the following goals:

• Establish a clear purpose and need.

  - Why is this project needed?

  - What need will be addressed?

• Evaluate all reasonable alternatives.

  - Do nothing?

  - Improve turn lanes and shoulders?

  - Widen S.R. 108 to five lanes?

  - Add more bus service?

  - Others?

• Evaluate impacts to the human and natural environment.

• Invite public involvement.

 

Experts in each of the resource areas below will study how proposed alternatives could affect

that resource.

 Resource Areas Considered

Rare, Threatened, or

Endangered Species

Cultural/Paleontological

Resources

Wildlife

Noise

Invasive Species

Land Use / Urban Policy

Water Pollution, Wetlands, Floodplains, Streams

Prime, Unique, Statewide, or Local Important Farmland

Air Quality

Title VI/Environmental Justice

Energy

Social/Economic Issues

Visual Resources

Construction Impacts

Hazardous Waste

Relocations

Section 4(f) and 6(f) Properties -

(Historic or recreational properties or properties developed with Land and Water Conservation Funds)

Right-of-Way

 
Purpose and Need

 

Purpose of the S.R. 108 Project:

• To improve mobility in adjacent cities by adding capacity to meet future travel demand.

• To eliminate safety and roadway deficiencies associated with the lack of shoulders and turn lanes.

• To enhance the opportunities for improved bicycle, pedestrian, and transit facilities consistent with

   local and regional land use and transportation plans.

 

Need for the S.R. 108 Project:

• Current roadway capacity does not accommodate current demand.

• Not all areas have sidewalks.

• No bicycle lanes.

• Current roadway design doesn’t meet safety standards.

• Roadway won’t accommodate future growth.

 
Level of Service (LOS)

Level of service (LOS) assigns a letter grade to indicate how well traffic flows along a roadway.    The graphic below shows the typical definition of LOS.

 
A

Free-flow operations at average travel speeds; vehicles are unimpeded in maneuvering within traffic stream.
B

Relatively unimpeded at average travel speeds; only slightly restricted maneuvering within traffic stream.

C

Relatively stable traffic operations; more restricted maneuvering at mid-block locations than LOS B; drivers may be required to sit through more than one cycle at traffic signals.
D

Small increases in traffic flow may cause substantial delay and decrease in travel speed; congestion and several cycles at traffic signals are more noticeable.

E

Poor travel speeds with slow progression and high delay; several cycles at traffic signals occur frequently.

F

Extremely slow travel speeds with queues forming with restrictive flow; vehicles advance sporadically.

 

The preliminary figures below show the current level of service and the projected level of service in 2035 without improvement.
Current level of service

at peak P.M. travel times

Projected level of service in 2035

at peak P.M. travel times

Updated September 26, 2006 Updated September 26, 2006
 
Current level of service at intersections       through the S.R. 108 Corridor at peak               travel times                      Projected level of service at intersections through the S.R. 108 Corridor in 2035 at peak travel times
   

 
Comments and questions regarding the S.R. 108 Environmental Impact Statement can be directed to Darla Christiansen at (800) 252-8929 or at dchristiansen@langdongroupinc.com.