​Engineering Resource Associates, Inc. conducted a GIS analysis for the mapping of overland flow paths for the Village of Lisle and surrounding tributary areas. The exhibits show overland flow routes of the natural drainage pattern of stormwater runoff during storm events and display a flow path at all locations that have at least 1-acre of area tributary.
 
The overland flow path maps will be used by the Village of Lisle to inform decisions regarding the permitting of sheds, garages, fences, pools and other structures that could block overland flow routes or be susceptible to flood damages. It also serves as a useful field reference when addressing local flooding issues and complaints by residents and other property owners outside of the flood plain. To find out more about this project, follow the link below:

​In honor of National Public Works Week we want to take a moment to thank the thousands of public works professionals who work tirelessly to keep us all connected.

​Construction recently completed on ERA’s building reinforcement design for the addition of a 30’x40’ bi-fold hangar door at the Construction Engineering Research Laboratory (CERL) in partnership with the University of Illinois. The TESS building houses a three-dimensional “shake table” that tests the ability of systems, facilities, and equipment to survive under realistic conditions of shock, vibration, and earthquake ground motion. The much larger door opening allows engineers to assess the seismic vulnerabilities of a wide variety of configurations that were previously not possible due to access limitations.

​ERA staff recently completed design plans and specifications for a roadway reconstruction and water main improvement project along Western Avenue in the Village of Northbrook. Extensive coordination was required with the Village, School District 30 and other stakeholders to develop detailed construction staging and maintenance of traffic plans to minimize potential impacts to Wescott School while school is in session and maximize the work being completed while school is out for the summer.
 
An open house was held the evening of March 20, 2018 at Wescott School to relay information to members of the public that may be impacted by construction. ERA prepared several exhibits to promote active discussions with residents, including a 30-foot long scaled map of the project area depicting the proposed improvements.

​In celebration of World Water Day, ERA invites you to take an informational survey on your everyday water usage that we helped put together for Engineers in Action (EIA).

ERA has experience creating public surveys and providing an in-depth statistical analysis of the results. Public surveys can be a great way to engage the public and solicit input into various projects throughout communities. Check out our other public survey projects here. 
 
Be sure to check out the EIA water calculator we created to see how much water you use in a single day!

​Special thanks to all of the surveyors out there and especially our very own ERA survey staff during National Surveyors Week!

​ERA staff have worked closely with the Geneva Park District to inspect and identify areas to rehabilitate the Island Park Bridge that crosses over the Fox River.  The bridge currently supports two BNSF rail lines and the trail pedestrian bridge.  The purpose of the bridge inspection was to document the existing condition of the concrete abutments, piers and overall condition of the pedestrian bridge before the construction of the third rail line.
 
ERA also performs bridge inspection services for other communities including Carol Stream, Warrenville, Kankakee County, and Champaign.