• Preferred Alternative Technical Memo (April 2013) (9.6 mb PDF)

This memo documents the reasons Waukesha County has selected the Pebble Creek West Alternative as the preferred alternative. The memo was send to the DNR, US EPA and Corps of Engineers on April 24 with a request for those agencies to concur in that decision.

• SEWRPC February 2012 Wetland Report (Caution: Large File 445.4 mb PDF)

Note: you may be able to right-click the link above and select to save the file to your hard drive instead on opening it in your browser.

Based on a request from Wisconsin DNR in July 2011, Waukesha County asked the Southeastern Wisconsin Regional planning Commission (SEWRPC) to delineate wetland boundaries along Meadowbrook/Merrill Hills Road and in the Pebble Creek corridor north and south of Sunset Drive. SEWRPC completed the field work in late summer and fall 2011 and recently completed its report on the boundaries of the wetlands and also the plant species found in each wetland.

• Rare Reptile Review (7.2 mb PDF)

The herptile report assesses the potential impacts of the Build Alternatives on the Blandings turtle and the Butler garter snake.

• Road Safety Audit; Updated October 2012 (10.3 mb PDF)

This Road Safety Audit (RSA) for the West Waukesha Bypass Study was updated October 2012. Use the links below to download the original version.

• Road Safety Audit (10.6 mb PDF)
• Road Safety Audit without Appendices (2.1 mb PDF)

The Road Safety Audit (RSA) was prepared in 2011 for the West Waukesha Bypass Study. The RSA is intended to evaluate the Build Alternatives as well as the No-Build Alternative for the proposed West Waukesha Bypass corridor. Each of the Build Alternatives should address crash trends, with improvements such as updating the roadway to current WisDOT and/or County design standards, relieving traffic congestion, and adding/enhancing pedestrian and bicycle facilities along and across the corridor. The RSA was prepared by Strand Associates. The Waukesha Bypass study team provided data to Strand Associates, but was not involved in preparing the RSA. As part of the RSA, a panel of local traffic engineers and local law enforcement participated in a 1-day workshop to discuss existing safety issues and assess the safety of potential alternatives. RSA's recommendations are being considered in the alternatives analysis and will be incorporated into the design if a Build Alternative is selected.

• Subsurface Exploration and Geotechnical Evaluation (2.9 mb PDF)

This Subsurface Exploration and Geotechnical Evaluation was prepared in 2011 for the West Waukesha Bypass Study. The purpose of this technical report is to evaluate the subsurface conditions along both the Pebble Creek Mapped Alignment (which has since been dropped from consideration) and the Pebble Creek West Alternative to determine if the soil can support a roadway using typical roadway construction methods or if more expensive soil stability measures would be required to build a roadway through the Pebble Creek corridor. This evaluation was prepared by CH2M HILL.

• Waukesha Bypass Noise Study (3.4 mb PDF)

The noise analysis assesses the noise impacts of the Build Alternatives on adjacent homes.