CTH SN Reconstruction

SRF Consulting Group was hired by La Crosse County to provide design engineering services for the reconstruction of CTH SN from CTH S to Alpine Lane. This 3.5-mile, two-lane rural roadway project included typical section, horizontal, and vertical alignment changes to meet design standards. The project required environmental documentation, including archaeological and historical surveys, hazardous materials assessments, and wetland impact evaluations.

The project was to address safety, drainage issues, and mobility on a critical connection between the Village of Holmen, Town of Onalaska, and City of La Crosse. The purpose of this project was to provide a safe and efficient corridor that is convenient for area businesses, residents, an elementary school, and the traveling public.

The design and construction was split into three phases: a pavement replacement phase and two phases of reconstruction as part of the WisDOT local program. The 1.8-mile, two-lane rural-to-urban roadway reconstruction portion of the project included a bridge replacement for the structure over the Sand Lake Coulee Creek, a roundabout at the CTH OT intersection, complex drainage and storm sewer design, subgrade improvement, and horizontal and vertical alignment changes to meet design standards. Pedestrian facilities were added to the length of the project in the form of a multiuse trail and sidewalk. ADA and all applicable design standards were adhered to for the design of the pedestrian facilities. Guardrail was also added along Sand Lake Coulee Creek to avoid impacts to the creek.

SRF successfully delivered the project through a large, multidisciplinary team that provided project management, public engagement, permitting, utility coordination, environmental planning, right of way, surveying, roadway design, hydraulic design, structural design, bicycle and pedestrian facilities, risk assessments, and final plans.