City of Kankakee


City of Kankakee

Market Sector



Highways & Traffic, Railroads, Structural, Surveying, Water Resources, Wetlands & Ecology

Brookmont Boulevard Viaduct

Kankakee, Illinois

  • V3 is providing Phase I and II engineering services for the replacement of a bridge that carries seven sets of CN Railroad tracks over Brookmont Boulevard as well as the widening of Brookmont Boulevard from two to four lanes from Washington Avenue to Schuyler Avenue, a distance of approximately 1,000 feet.
  • The proposed new bridge will be a 78-foot-long, single-span structure featuring a 92.5-foot-wide superstructure carrying six tracks and a 122.5-foot-wide substructure. The bridge will be able to accommodate two additional tracks if desired in the future.
  • Extensive coordination with the CN Railroad is required to create a staging plan acceptable to all stakeholders. The project includes lowering the existing roadway beneath the bridge by approximately five feet to increase the vertical clearance of the viaduct. A pump station will be designed to prevent future flooding at the viaduct.
  • A hydraulic analysis was not performed in the approved Phase I. After V3 performed a hydraulic analysis, it was found that a large amount of water currently drains to the viaduct from the Village of Bradley. To provide for a 100-year storm event, it was determined that in addition to a pump station, additional drainage improvements were needed. To accommodate the required drainage a new detention basin was provided on the northeast corner of Brookmont Boulevard and Washington Avenue and approximately one mile of 72-inch storm sewer was installed to the south and drained to Soldier Creek.
  • Due to the various changes in Phase II from the approved Phase I and the addition of the detention basin and storm sewer work, IDOT and the Federal Highway Administration (FHWA) required that a new Phase I study be prepared.
  • The Phase I process included the preparation of the environmental survey request, project development report, environmental coordination, noise analysis, public involvement and IDOT/FWHA coordination.
  • Right-of-way acquisition and easements were identified which included two complete takings of property to construct the improvements.
  • The resulting improvements will provide a much safer viaduct with improved sight lines, increased clearances, ADA accessibility and protection from flooding.