US 34 Bridge Construction Project


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US Route 34 at the Canadian National (CN) Railroad Bridge Construction

This project is located in the City of Aurora, 1.5 miles west of Illinois Route 59, where Ogden Avenue crosses the EJ&E/CN Railroad, at-grade. EJ&E railroad was acquired by the CN Railroad according to the 12/2008 ruling by the US Department of Transportation’s Surface Transportation Board (STB). CN Railroad acquired EJ&E to improve rail operations in the Chicagoland area. The acquisition will result in an increase in the number of trains throughout the corridor. The STB stipulated the need for construction of a grade separation structure at this location to mitigate impacts caused by the increased rail traffic.

The project is needed to reduce traffic delays and to support efficient response by emergency service providers. It will address traffic delays and safety concerns due to trains crossing Ogden Avenue at-grade. The project is tentatively scheduled for letting in late fall of 2013 subject to plan readiness, land acquisition and funding availability through our Annual Legislative Appropriations.

A highway overpass structure is proposed to span over the existing and proposed additional second track. The overpass bridge length will be configured to add a third track for Metra’s STAR Line. The proposed bridge structure will be approx. 253 feet long and 97 feet wide.

This site has been created to provide one location where the public can get details about the US Route 34 project scope and the construction staging and schedule. The information is intended to help you understand what we will be doing and when the work is anticipated to take place.

As the Department works to make this section of roadway safer for the future, we want to make sure users, residents and local business owners have up to date information on the progress of the project. If you have any questions about the project that have not been answered with the information on this site please use the “Contact Us” section and a response will be sent to you

Note: IDOT projects typically have three distinct phases. Phase I (or the project Study) consists of developing the project scope, environmental studies and preliminary design of a project. Phase II (Design) consists of refining the design to develop contract plans and land acquisition. Phase III (Construction) consists of the actual construction of the project.

UPDATE: (October, 2016)

  • Contract 60R06 is 83% complete.
  • The substantially complete date for the project will be November 23, 2016 (landscaping will not be completed until Spring of 2017).
  • October 17, 2017 traffic will be in a single lane configuration using the two new bridges. WB traffic will be on the WB lane and EB traffic will be on the East bound lanes.
  • All noise walls will be completed by October 14, 2016.
  • October 26, 2016 all pavement will be installed.
  • October 31, 2016 all traffic signals will be installed at the intersection of Frontenac and US 34.

A highway overpass structure is proposed to span over the existing and proposed additional second track. The overpass bridge length will be configured to add a third track for Metra’s STAR Line. The proposed bridge structure will be approx. 253 feet long and 97 feet wide.

The bridge overpass structure will utilize steel beams made of low maintenance sustainable weathering steel. The bridge cross section and approach portland cement concrete roadway will consist of two 12-foot wide traffic lanes in each direction separated by an 18-foot wide concrete barrier median. US Route 34 will be reconstructed for a length of 3060 feet. The overall project length is 5700 feet. Four retaining walls (approx. 600-650 feet long and 27 feet high each) will be constructed to support the elevated roadway. The proposed structure will be designed to accommodate a potential future third through traffic lane in each direction.

The existing shared-use trail that is part of the Southern DuPage County Regional Trail running along the south side of the roadway and the sidewalk along the north side will be maintained as part of the project. The sidewalk will be 8 feet wide and the trail 14 feet wide. A concrete traffic barrier will be provided to provide a safety separation between vehicles, pedestrians and bicyclists. Aesthetic enhancements to the project will include low maintenance plantings for screening of the proposed retaining walls to mitigate impacts of the elevated roadway. Formliners will be used to provide a visually appealing pattern on the surfaces of the retaining walls. An ornamental pedestrian railing system will be provided along the top of the retaining walls.

The intersection of US 34 and Frontenac Street intersection will be reconstructed. The existing US Route 34 lane configuration of two through lanes and a center left turn lane at the intersection will be maintained as well as the existing traffic signal.

Three noise abatement walls will be constructed along this project. East of the Frontenac Street intersection, a wall 670 feet long and eight feet tall will be provided on the north side. East of the Long Grove Drive intersection, a wall 1620 feet long and seven feet high will be provided on the north side and a 1290 feet long and seven feet long wall on the south side.

The project will be stage-constructed with one lane of traffic maintained in each direction during each stage with no detours or total roadway closure.

An existing Commonwealth Edison (Com Ed) service road along the west side of the railroad with access at US 34 will be relocated. Com Ed and Nicor use this road to access facilities north of US 34. A new access road (2350 feet long and 16 feet wide) will be provided with entrance from the north at McCoy Drive. The proposed access road will be designed to accommodate the loading of special transport trucks and mobile lifting equipment needed for maintenance of the facilities. A precast concrete arch structure will be constructed to carry the proposed access road over Waubonsee Creek.

The existing Fox Valley Park District shared-use trail will be extended 700 feet to the south from its current terminus and then 500 feet to the east to connect to Frontenac Street. The proposed 10-foot wide shared –use trail extension will be constructed using hot mix asphalt. Green Initiatives:

Extending the shared-use trail along the east side of the railroad to Frontenac Street will promote the connectivity of several regional shared-use trails in the vicinity of the project, thereby facilitating bicycling as an alternate transportation mode. The 18-foot raised median separating eastbound and westbound lanes will be landscaped and seeded. Spacing the retaining walls along both sides of the roadway far enough apart and building the bridge with a sufficient out-to-out width to accommodate the future addition of a third through traffic lane in each direction will minimize materials disposal from the future widening of the proposed overpass. Through the use of an erosion and sediment control plans and water pollution prevention plan, existing flows will be protected. Use of Recycles Asphalt material will be utilized on this project.

The project is intended to be constructed in two phases to expedite construction and minimize impacts to the local communities through a reduced construction period. Tentatively, the contract breakouts are as follows:

Contract # 60T83: This advanced contract will include the relocation of Com Ed access road and the construction of the proposed arch structure over the Waubonsee Creek as well as the extension of the Fox Valley Park District shared-use trail. The advanced contract will benefit construction of the proposed overpass and alleviate construction delays and access considerations. This project is tentatively anticipated to be constructed within one construction season; about 8 months.

Contract # 60R06: The main contract will begin subsequent to completion of the advanced contract and after completion of necessary utility relocations. The main project is anticipated to be constructed within 2 construction seasons.


As the US Route 34 Bridge Construction Project progresses, IDOT will periodically update this website to assure that the motorists of Illinois are kept informed of project developments, public involvement opportunities, and construction related activities.

If you have questions about the project, please fill out the feedback form or contact us at: Illinois Department of Transportation
Office of Communications
201 West Center Court
Schaumburg, IL 60196

Please continue to visit the US Route 34 Bridge Construction Project website for periodic updates throughout the course of the US Route 34 Bridge Construction Project.

The Illinois Department of Transportation looks forward to your continued input and support.

This site will be updated periodically as the project progresses. The Illinois Department of Transportation (IDOT) wishes to thank you for your support and patience.

Construction Fast Facts

  • Project Start: Spring, 2014
  • Project End: Fall, 2016
  • Project Cost: $27,000,000
  • Project Municipality: Aurora
  • Project County: DuPage

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View Project Information

Photo Gallery

Median Removal - October 2014
Tree Removal - September 2014
Existing Conditions - August 2014