STH 35 Roadway Reconstruction

La Crosse County, WI | Transportation

Overview

ISG oversaw 3.5 miles of complete roadway reconstruction along STH 35 in La Crosse County.


Opportunity

As a heavily traveled route, STH 35 posed a number of challenges for the construction of two roundabouts.

Solution

This highly complex project involved multiple construction stages and diverse work including the addition of two roundabouts. It was vital that the team completed the work while still allowing traffic through because STH 35 is a heavily traveled tourist route due to its designation as the Great River Road. Work consisted of water main replacement, storm sewer, box culvert extensions, modular block and MSE retaining walls, multi-use trail construction, culvert pipe replacement, intersection improvements, roadway surfacing, and other incidental items.

Key tasks performed by ISG included project documentation utilizing AASHTOWare Field Manager withMobile Inspector and Quality Verification (QV) testing of concrete, base course, subgrade materials and nuclear density on the asphalt pavement. Other services provided by ISG included construction inspection, staging layout, survey, quantity measurement, and mass haul GPS surveying performed on offsite borrow pits. ISG also completed the final computation of common excavation by utilizing the GPS survey of the final build and then using a comparative surface to compute mass haul within AutoCAD Civil 3D. As part of this project, the Project Team provided mentorship to a WisDOT Senior Engineer and Student Engineer in Training (SET).


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