TRANSPORTATION
Traffic Engineering:

Stonefield Drive/IL Route 159 Turn Lanes




PROJECT NAME: Stonefield Drive/IL Route 159 Turn Lanes
CLIENT: Smithton Development Company, LLC
JURISDICTION: Village of Smithton and Illinois Department of Transportation (IDOT)
LOCATION: Smithton, St. Clair County, Illinois
CONSTRUCTION COST: $240,000
YEAR COMPLETED: 2006
PROJECT DESCRIPTION: Smithton Development Company, LLC employed our firm to prepare the Traffic Study, Intersection Design Study (IDS) and Construction Plans, Specifications, and Estimate for the intersection of a new subdivision entry roadway (Stonefield Drive) intersecting an existing state highway (IL Route 159).   All phases of the project were subject to IDOT review for compliance with IDOT standard policies and procedures.  The Traffic Study was completed using the Trip Generation Manual to develop traffic forecasts.  The IDS analysis was completed using Highway Capacity Software (HCS).  Turning movements and corner radii were developed using AUTOTURN software for the appropriate design vehicle, and the intersection sight distance was checked.  The project included the addition of a left-turn lane and right-turn lane on IL Route 159. The construction scope included asphalt widening and paving, asphalt shoulders, ditching, drainage culverts, thermoplastic pavement markings and driveway removal and replacement.  Our firm was also retained to provide all land and ground surveys, bidding assistance, construction staking and construction testing services. 



Transportation Areas of Service:
Roads & Streets
Traffic Engineering
Planning / Funding Applications
Recreational Facilities
Construction Inspection


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