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.

GET IN TOUCH
HAVE AN ENGINEERING PROBLEM THAT YOU'D LIKE OUR HELP WITH?

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 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.
By m.dupree August 9, 2022
The City of McHenry elected to take significant steps towards improving the local city streets through a road resurfacing program that will continue through the upcoming years. McHenry utilized an independent 3 rd party firm to create a report analyzing the condition of the local city streets for a systematic approach to providing value to the community. This report identified for selection the streets rated the lowest in overall condition. The City made selections based on a dedicated funding amount with the express goal of resurfacing as many roads as possible. The 2022 Road Program included milling of existing bituminous surfaces, preparation and re-grading of the existing roadway bases, adjustment of utility structures, placement of hot-mix asphalt binder and surface courses and the restoration of disturbed areas. The Project incorporated 28 individual streets totaling approximately 7.7 miles of local city streets. The City requested Trotter and Associated Inc. to provide construction engineering services for the Project. TAI staff provided Project oversite during construction including the Contractor’s daily progress and Work in accordance with IDOT documentation policies and procedures, ensuring the Contractor performed all Work conforming to the Contract Documents, Project coordination between the Public Works Department and the Contractor, documenting construction progress for periodic reporting and quantifying Work performed for periodic payments to the Contractor.
By m.dupree May 29, 2019
US Route 20 is a two-lane rural highway through Northeastern Illinois that curves through the Pingree Grove town center area on a...
View More