HOH performed re-design section engineering services to bring the 1995 design to current using 2005 design criteria, including a re-design from the 2010 traffic to the 2030 traffic. Re-design was done for the study, design and preparation of contract plans, maintenance guidelines documentation, construction cost estimate and final documents for the construction of two miles of new mainline including a full diamond interchange at Illinois Route 7 (159th Street) with unattended toll collection on the ramps to and from the north, crossroad bridges over the mainline, mainline bridges over Fiddyment, intersection design studies, traffic analysis, box culvert design, detention / retention ponds, wetland mitigation, utility relocation, design of public utility relocation, and traffic signalization.

Additional design items included, alternative interchange alignments, profile studies, guardrail warrant analysis, landscaping, utility relocation / protection, relocation and design of new sanitary facilities, including provision for new sanitary sewer main, flood and noise mitigation, erosion control, pavement markings, maintenance of traffic including temporary runarounds, haul roads, access and service roads, median barrier wall, property fencing, ramp toll plazas with canopies, lighting and HVAC for the support building, electrical design for the toll collection equipment and plaza lighting, fiber optics communications trunk line conduit system, bike paths accommodation, surface and subsurface drainage facilities and detention ponds.

HOH prepared exhibits for two public hearings, attended those hearings, and responded to the questions of the affected public. In the pre-concept engineering phase, HOH adapted the IDOT environmental impact statement, location drainage report, and location design report to ISTHA design guidelines. This involved close coordination with IDOT and local governing agencies.

HOH was responsible for a Phase I Design Study and Phase II Design of Ferry Road from IL. 59 to Eola Road a distance of 2 miles. The Phase I study resulted in a new alignment for Ferry Road and a new wider typical cross section to accommodate development planned for the area. SOS Children's Village is a non-profit organization that builds permanent homes serving foster children and sibling groups who are unlikely to be reunited with their biological parents and unlikely to be adopted. This project is the first urban SOS Village in America, providing 16 new family focused homes, and was constructed in Chicago at 76th Street and Parnell. HOH was proud to be a part of this worthwhile and gratifying project.

Engineering services provided the design of new streets, alleys, sidewalks, curb and gutter, water main sanitary sewer, retaining walls, lighting, complete field surveys including detailed topographic surveys with base line and bench mark establishment, data collection, utility plans, cross sections and earthwork details, quantities, cost estimates, and specifications. Drainage and new sewer construction included an in-line detention basin using pre-cast concrete sections. Many of the sewers in the project were replaced with new upgraded sewer systems. The project required coordination with all the city utility departments. The previous use of the site was a manufacturing plant, creating areas of hazardous waste. The site grading and underground utility locations were established to minimize the amount of hazardous material removal. Generally, three feet of clean fill was placed over the existing grade.

This project involved the design and construction of storm water improvements for the Pleasantdale subdivision in an unincorporated area of southeast Dupage County. A high water table and an inadequately designed system of drainage ditches resulted in flooding problems, as well as problems of standing water in many ditches and on some lots. This work consisted of the design and construction of a 100 acre-foot storm water detention pond, 9,400 linear feet of storm sewer, 4,200 linear feet of ditch grading, site grading, pavement restoration, and landscaping. During construction HOH proposed several minor modifications or additions to the planned work to address specific local problems.

This project consisted of the design and preparation of construction documents for the second phase of the reconstruction of the District Maintenance Facility in Des Plaines, Illinois. The scope of work included a new facility to house maintenance equipment and vehicles, provide for storage of materials in storage bins protected by a roof, and the demolition of the old office / maintenance building. The facility is on the south side of Ballard Road. The work included a new employee parking lot with a new entrance. The employee parking area, with handicap accessibility, is outside the security fenced-in area of the facility.

Close coordination must be made with the Cook County Forest Preserve District (CCFPD), The City of Des Plaines, Cook County Environmental Protection Agency, and IDOT / IDNR for compensatory storage issues. Heating was provided to maintain temperatures and prevent vehicles and water (for housing down) from freezing in the winter climate. A triple compartment basin is included for washing down undercarriages and concrete floor. The basin ties into the existing sanitary system, requiring coordination and permitting from the City of Des Plaines and MWRDGC. Other work included a sprinkler system, decorative entrance landscaping, fire and security alarm system, yard lighting, unit heaters, exhaust fans, automatic doors, and lighting in the new truck storage building requiring emergency generator backup. Construction documents include plan drawings and details, special provisions, specifications, construction schedule, and cost estimate.