Transportation

Bridge Bundles & Work Orders

IDOT District 1

Various Bridge Rehabilitation, Phase II, District 1:
Lin Engineering, Ltd. served as Prime Consultant on this $3.0 million contract for Phase II various projects in District One. Lin provided roadway and maintenance of traffic design for two high-profile bridge work orders: the deck replacement of I-55 over IL-53 and the superstructure replacement of I-55 over Joliet Rd. The scope included MOT presentation, TMP & queue analysis, staging and detour plans. The work also included removal plans, pavement marking, erosion control and drainage plans in support of the structural improvements.

Phase I Studies for I-290 Bridges

Leavitt to Racine

Lin Engineering, Ltd. served as the Prime Consultant to perform Phase I engineering services, for all work associated with the preparation of a preliminary engineering environmental studies for the improvement of bridges along the I-290 corridor in Cook County. The following bridges were included in the scope: Leavitt St., Damen Ave., Ogden Ave., Paulina St., Ashland Ave., Loomis St., and Racine Ave. Phase I included stakeholder involvement and coordination with local agencies and Illinois Medical District (IMD), data collection, preparation of base maps and mosaics, topographic survey, right of way survey, crash analysis, traffic studies, geometric studies, interchange design studies, traffic maintenance analysis including a traffic management plan, bridge inspections and preparation of Bridge Condition Reports, drainage work including separate Location Drainage Technical Memorandums for each crossing location, cost estimates, and project report.

Elgin O'Hare Western Access
Rohlwing Road

Preparation of Phase II plans, specifications, and estimates for the proposed Rohlwing Road overpass over Elgin O'Hare Expressway (Contract C01). Work included preparation of all roadway design elements of the project, including preparation of alignment & ties sheets, typical sections, removal plans, maintenance of traffic plans, roadway plan and profiles, proposed and temporary drainage plans, erosion control and landscaping plans, traffic signal plans, pavement jointing plans, signing and striping plans, grading plans, retaining walls, and cross sections. Also prepared plans for proposed bridge carrying Rohlwing Road over Elgin O'Hare Expressway. Work included coordination with other Elgin O'Hare contracts which ran concurrently with Contract C01, IDOT and local agency coordination, and Rohlwing Road reconstruction contract at southern project limits. Work required maintenance of traffic plans at Rohlwing Road and along Elgin O'Hare Expressway to coordinate with all adjacent and concurrent construction contracts, including temporary signing, drainage, and interim completion dates to ensure no impacts to construction critical path schedule.

US Route 52 at IL Route 71

IDOT Region Two | District Three

Lin Engineering, Ltd. served as the Sub-Consultant to perform Phase I engineering services, for the development of a single-lane roundabout at the intersection of US 52 and IL 71 in Lasalle County, using OpenRoads Designer in conjunction with the roundabout design software TORUS. Tasks included development of horizontal and vertical geometry, swept-path and vehicle turning analysis, and refinement of entry, circulatory, and exit geometry. The work was performed in accordance with applicable IDOT criteria and recognized roundabout design guidance, with a focus on accommodating design vehicles and managing operating speeds to support safe and efficient intersection operations.

FAI Route 55 (I-55)

Livingston County

The project involved the design and preparation of proposed cross sections for the proposed rubblization of approximately 6 miles of I-55 from 1.7 miles south of IL Route 116 to 0.6 mile north of IL Route 23 in Pontiac, Livingston County. Development of alignment and profiles using Microstation SS4 platform and 3D Corridor Modeling tools to create temporary and permanent cross sections for mainline I-55 and ramps. Performed calculation of cuts and fills and creation of schedules for earthwork models. Additional effort was required for preparation of cross sections at ramp gore areas and superelevation sections. Prepared additional cross sections for special ditch designs.