• More than 25 municipal entities rely on Heneghan & Associates for engineering services.
• We help municipal entities search for and receive funding.
• We have built long-term relationships with IDOT, MDOT, US EPA, DCEO, local government boards and committees.
  
                                                 Roadways/Highways

       We perform final design services for streets and highways.  Services include

• Horizontal and vertical alignment alternatives
• Preliminary cost estimates
• Final design
• Drainage computations
• Final drawings
• Detailed quantity take-off
• Final cost estimates
• Special condition specifications
• Right-of-way drawings
• Design of improvements
• Widening streets and highways including signalized and non-signalized intersections
• Design of new storm drainage system.
• Coordinating with utility companies and the local water and sewer districts.

       Storm Sewer Systems

We provide stormwater management services for subdivision and land development projects for residential, commercial, and industrial developments. We serve

• Private developers
• Local municipalities
• Schools
• Commercial and industrial clients. 

Our stormwater management design experience includes

• Stormwater management facilities
• Erosion and sedimentation control measures
• National Pollution Discharge Elimination System (NPDES) stormwater permit activities
• Stormwater feasibility studies
• Floodplain studies
• Site grading
• Storm sewer systems
• Construction cost opinions
• Use of the latest engineering software programs
• Knolwedge in the fields of hydraulics and hydrology
  
                                                           Detention Basins

According to the US EPA, polluted runoff is the leading cause of impairment in rivers and streams in the United States. Many existing stormwater dry detention basins designed solely for stormwater runoff peak discharge magnitude abatement and detention basins designed for water quality and quantity control fail to achieve necessary levels of non-point source pollutant loading reduction. This correctable situation has necessitated the demonstration of retrofitting techniques on existing systems. Once it can be demonstrated that a retrofit technology is efficient economically and scientifically, local watershed groups, private entities, and federal, state, and local officials can pursue implementation.

                                                            Dam Inspections

Heneghan and Associates assists municipalities with dam inspection services.  The annual inspection required by IDNR is important to assure water safety and its downstream inhabitants. Heneghan's dam observation includes inspection of

• Heavy vegetation
• Rodent action
• Outlet controls
• Conditions of the outlet conduit
• Spillway channels
• Seepage
• Cracks
• Slumps
• Settlement
• Erosion protection and beaching/benching.

We will educate you in what to look for during a dam inspection, how to photograph certain features of a dam, and what records to keep. 

                                                                 Land Planning