HBM-Willow Road Box Culvert

Project Location

Willow Road (FAP 305)

Services Provided

Phase I,II,& III Design Services

Project Owner

Illinois Department of TransportationBureau of DesignContact: Michelle A. Aquino (847) 221-3053 D-91-007-12

Contract Amount


Joint Venture

Millennia Professional Services and HBM Engineering Group Managing Firm: MPS


Bollinger, Lach & Associates, Inc.
Atlas Engineering Group
Wang Engineering, Inc.
Gandhi & associates, Inc.

Key Team Members

Moussa A. Issa, Project Manager Joe Glennon, Project Engineer Mahmoud A. Issa, Project Engineer Mohsen A. Issa, QC/QA Reviewer Lisa Buntin, Staff Structural Engineer John Saraceno, Staff Structural Engineer

HBM Engineering Group, LLC prepareda feasibility study, final plans, specifications and estimates for the replacement of two single box culverts on Willow Road located approx. 100 feet east and west of the existing railroad bridge which is approx. 500 feet east of Shermer Road in Northfield, IL (Region 1, District 1). The culvert to the west of the railroad bridge (6′ x 4′) was originally built in 1942 with a length of 79′-3 1/4″ and was extended at both ends in two different rehabilitation projects to be approximately 129 feet long. The culvert to the east of the railroad bridge (4′ x 2.5′) was originally built in 1942 with a length of 79′-9″ and was extended to the south in a rehabilitation project to be approximately 90 feet long.

The feasibility study included reviewing existing documents including culvert existing and rehabilitation plans and inspection reports. Field measurements were performed to determine the existing geometrics of the culverts, roadway lanes, medians, guardrails, bicycle fencing and utilities. Preliminary Maintenance of Traffic (MOT) Study was done to investigate the different MOT options that can be used. This was necessary because of the constraints imposed on the construction area by the adjacent railroad bridge.

Based on the feasibility study performed on thisproject, both new culverts were designed tobe cast-in-place culverts because the fill depth between the bottom of the pavement and the top of the culvert at the edge of the pavement (curb) wasless than 6″. The spacing between the north and south pier faces of the existing railroad bridge wasapproximately50′-3″ and the spacing between the inside faces of the curbs at this location was46′-0″ (including a 2′-0″ median). The eastbound and westbound traffic wascarried on two lanes each direction with the lane widths varying between 10′-6″ and 11′-0″.

During culvert construction,MOTwasthe controlling factor in the construction time needed. Phase III construction supportwas also provided during construction.