Sonja Piper Email & Phone Number

Provide traffic liaison services between MnDOT and large transit projects. Oversee and direct the traffic aspects within the transit corridor of major transit projects including signal design, signal timing, signing, striping, specification, traffic zone safety, pedestrian facilities, and traffic modeling. Prepare traffic agreements and represents MnDOT at transit design and coordination meetings.

Eden Prairie, Mn

Managing traffic impact studies, travel demand management plans, intersection control evaluations, traffic signal plans, roundabout design, signing plans, traffic operations modeling and access management planning.

Manage traffic signal and street lighting projects. Provide overall supervision and direction to signal and lighting technicians. Coordinate efforts among Street Engineering and Construction Division, Traffic Engineering Division, and Traffic Operations Division. Attend and present at public meetings for upcoming construction projects. Develop and implement policies for signal and lighting components.Manage $1,000,000 federal grant administered through the Metropolitan Council to install Accessible Pedestrian Signals (APS) at existing traffic signals to improve accessibility on transit routes. Collaborate with the Minnesota Department of Transportation and Ramsey County on projects related to design and installation of pedestrian ramps and APS. Develop a comprehensive policy that will be used for all future City of Saint Paul APS projects that governs the installation, programming, and complaint reconciliation of the APS system. Learned basics of Braille to verify messages on signs and appropriate installation.Managed Saint Paul Arterial Regional Traffic Flow Improvements Project (SPART) which used $2 million in Federal CMAQ funds to install fiber optic interconnect through 15.5 miles of roadway connecting 62 traffic signals to the city's central signal management system. Completed the Project Memorandum, authored the Request for Proposal for the signal timing portion of the project, prepared construction plans and special provisions, worked with MnDOT using the Delegated Contract Process to maneuver through the federal funding process.Compiled Right-of-Way Trash and Recycling Plan. Worked with Street Maintenance, Parks Department, and Recycling Coordinator to prepare plan for improved efficiency of right-of-way trash and recycling servicing.Monitored Street Maintenance crews as they paved streets, patched potholes, seal coated streets, sealed cracks, among other daily operations.

As project engineer / project manager, conducted traffic impact studies, intersection control evaluation reports, signal and roundabout design and analysis, pavement designs, and transportation planning for cities, counties, and municipalities.Prepared Intersection Control Evaluation (ICE) reports to determine preferred intersection control. Examined safety and crash rates at intersections. Analyzed traffic at intersections using Synchro/SimTraffic and RODEL analysis software packages. Designed traffic signals, prepared construction plans, cost estimates and special provisions.Developed signal timing for intersections and assisted with signal activation and adjustment.Conducted VISSIM modeling project to compare intersection control types.Completed Transportation Plans for several cities.Managed traffic study to determine appropriate intersection control and lane configuration for improvements to corridor receiving federal funding. Prepared traffic study report and presented study findings at public information meeting.Conducted major traffic study for AUAR incorporating two areas with different land use options, six combinations in all, each with unique traffic mitigation.Prepared traffic study report discussing impacts of multiple roadway changes, including one-way to two-way corridors, and four-lane undivided to three-lane with bicycle lanes.Managed traffic analysis and generated traffic report for Environmental Analysis Worksheet (EAW).Designed flood control levee system using Microstation and InRoads computer software.

Performed field investigation for 2002 Major Mill and Overlay project in Plymouth, MN.Provided construction observation for mill and overlay, bituminous bike trails, concrete curb and gutter replacement, and storm sewer renovations for projects.Conducted turning movement counts for the traffic department.Aided the hydrology department delineating drainage areas for various projects.

Worked on survey crew conducting topographical surveys and construction staking surveys.Developed construction plans and specifications for boat ramps, marshlands, water control structures, fishing jetties, and roads.Performed construction observation to ensure contract compliance.