TRANSPORTATION & TRAFFIC ENGINEERING

Trotter and Associates, Inc. has an excellent resume of transportation related projects. These projects include roadway reconstruction, annual maintenance and rehabilitation programs, and parking lot design. Our team has extensive experience with designing/permitting/constructing new or improved access locations with IDOT and the various county DOT’s.


TAI routinely prepares plans and specifications for large transportation projects such as roadway reconstruction, widening, and resurfacing for municipal clients. TAI also commonly designs site development projects that include use-specific features such as traffic calming devices and environmentally conscious features.


Trotter and Associates, Inc. routinely uses specific designs and features to address the needs of heavy vehicles such as fire trucks, school buses, specialty trucks, and construction equipment. Some of these features include truck bays, reinforced pavement, loading docks and appurtenances for the delivery of bulk storage material. Designs must not only be cost-effective but provide safe and practical turning movements for the intended vehicles.


It is imperative that traffic planning/calming features result in reduced speeds but do not impede the flow of traffic. The design should incorporate the following elements:


  • Ensure Pedestrian Safety
  • Separate vehicles and pedestrians



  • Provide increased visibility for pedestrians and drivers
  • Site lines
  • Appropriate lighting
  • Minimize obstructions


  • Maintain vehicle circulation
  • Separate through vehicles and loading areas
  • Minimize intersections and turning movements
  • Provide multiple points of ingress/egress
  • Separate vehicles by type and use


  • Limit vehicle speeds
  • Provide proper signage
  • Pavement marking and delineations
  • Long radius curves
  • Elimination of short cuts


The TAI team has incorporated ecological enhancements within our site designs. These include the use of best management practices such as permeable pavers, pervious concrete pavements, native vegetated bio-swales, rain gardens, bio-retention basins, natural buffers and infiltration beds. These green engineering features help reduce the impacts of pavement and impervious areas on the surrounding environment. In addition, these environmental friendly features can also reduce annual costs by eliminating the routine maintenance associated with asphalt and storm sewer systems.

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RELATED PROJECTS

By Mark Dupree November 10, 2025
Trotter and Associates, Inc. has delivered a comprehensive series of municipal infrastructure upgrades in Woodstock, IL, over a multi-year period. These initiatives, focused on street improvements and water main replacements, have impacted 22.2 miles of roadway and represent a total investment of $28.3 million in enhancing public infrastructure and urban development. 2026 City of Woodstock 2026 Street Program The Trotter and Associates team is currently working closely with the City of Woodstock to determine the scope and streets for the 2026 Street Program. This project will entail road resurfacing and reconstruction, along with sewer repairs, on local roads. Raffel Road Resurfacing Trotter and Associates secured IDOT Local Agency Functional Overlay (LAFO) funding to resurface a 1-mile section of Raffel Road. This heavily used local arterial road had not been resurfaced since 2010. TAI worked with the city to complete both Phase 1 and Phase 2, and will complete Phase 3 (construction) in the spring of 2026. 2025 City of Woodstock 2025 Enhanced Street Program The 2025 Enhanced Street Program was a $8.3 million project that included 9 miles of cement-stabilized and traditional road reconstruction, as well as mill and overlay work on a mix of local arterial, collector, residential, and commercial roads. Associated work included full survey and design of severely deteriorated streets and areas with challenging ADA compliance issues, curb and gutter R&R, sidewalk R&R, landscape restoration, and storm and sanitary evaluation, design, and spot repairs. City of Woodstock Gould Street Water Main Replacement The 2025 Gould Street Water Main Replacement was a $1.3 million project which entailed the installation of 1,200 feet of 8” water main and appurtenances, adjacent sanitary and storm sewer repairs and replacements, a complete roadway reconstruction, a mill and overlay of adjoining streets, and full landscape restoration. 2024 City of Woodstock 2024 Enhanced Street Program The 2024 Enhanced Street Program was a $6.7 million street program that consisted of 6.9 miles of cement-stabilized reconstruction, as well as traditional mill and overlay work on a mix of local arterial, collector, residential, and commercial roads. Associated work included full survey and design of severely deteriorated streets, curb and gutter R&R, sidewalk R&R, landscape restoration, and storm and sanitary evaluation, design, and spot repairs. City of Woodstock Pleasant Street Water Main Replacement The 2024 Pleasant Street Water Main Replacement was a $3 million project which entailed the installation of 2,500 feet of 8” water main and appurtenances, 2,300 feet of new storm sewers, a complete roadway and curb and gutter reconstruction with significant changes to the road’s profile and cross-slopes, and a mill and overlay of adjacent streets. 2023 City of Woodstock 2023 Enhanced Street Program The 2023 Enhanced Street Program was a $6 million program that included 4.5 miles of cement-stabilized reconstruction and traditional mill and overlay work on a mix of rural, residential, collector, and arterial roads. Associated work included the police station parking lot mill and overlay, curb and gutter R&R, sidewalk R&R, storm and sanitary repairs, lead water service replacement, and landscape restoration. City of Woodstock Lake Avenue Water Main Replacement The 2023 Lake Avenue Water Main Replacement was a $3 million project, which entailed the installation of 3,200 feet of 16” water main and appurtenances as well as an asphalt overlay on Lake Avenue, a heavily trafficked local arterial road.
By Mark Dupree January 16, 2025
The City of North Chicago's Foss Park Underpass and Retaining Wall Improvement Project is nearing completion. This section of Foss Park Avenue is a critical access point for AbbVie Pharmaceuticals, the FBI Training Facility, Foss Park District amenities, West Rock Corporation, and Naval Station Great Lakes, so time was of the essence. The contractor achieved substantial completion within seven weeks. This $550,000 project included reconstructing 800 feet of the roadway and all associated curbs, sidewalks, and storm sewer. The roadway section under the Chicago Northwestern Railroad underpass was improved from an HMA pavement section to a 10-inch PCC-reinforced pavement section. Areas along the route were also reprofiled to improve drainage. To replace a failing stone wall along a portion of the corridor, a 130-foot modular block retaining wall was installed. The remaining parkway restoration and HMA surface course placement is expected to be completed in Spring 2025.
By Mark Dupree December 19, 2024
The Village of Fox Lake recently completed its 2024 Roadway Improvement project that improved a half mile of Longwood Drive and Wildwood Drive. Rehabilitating these roadways included using Full-Depth Reclamation with Cement, a sustainable construction method. This method pulverizes the existing pavement section and mixes cement, providing a more substantial base for the new pavement section. Grant Township maintains a section of Longwood Drive and two other roadways east of the work being completed. To minimize public impacts and provide a comprehensive improvement to residents, the Township resurfaced a half mile of its roadways in conjunction with the Village. Trotter and Associates provided design and construction engineering services for the Village and the Township.
By Mark Dupree October 1, 2024
The Village of Fox Lake engaged Trotter and Associates, Inc. to design and construct a new roadway for the Lakefront Park redevelopment initiative. Valued at approximately $1.4 million, this undertaking will serve as the primary means of access for the residents and businesses along Nippersink Road, adjacent to Lakefront Park.  The project also includes new water main improvements installed to bring municipal water to the residents and businesses and updates to the stormwater utilities within the area. Construction began in June 2023, and the roadway opened to the public in November, achieving Substantial Completion. The project has reached Final Completion, with the overall cost being about $20,000 under budget.
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