Sigel Township Bridge #1 Replacement – Shelby County, Illinois
Overview:
The project involved the design and construction of a single-span bridge featuring precast, prestressed concrete deck beams, pile bent spill-through abutments, and Type SM bridge rail. Improvements also included roadway approach work to enhance safety and performance at the crossing.
What TWG Delivered:
– Phase I Engineering: Completed topographic survey, pavement and bridge design, and hydraulic analysis, including evaluation of high-water impacts on roadway overflows and bridge approaches.
– Traffic & Safety Analysis: Conducted crash analysis, traffic study, and guardrail design to improve roadway safety.
– Environmental & Regulatory Coordination: Performed environmental reviews and special waste assessments, and secured project approvals.
– Preliminary Plans & Reporting: Prepared preliminary plans and project report for approval.
– Phase II Engineering: Developed final plans, details, special provisions, and engineer’s cost estimate.
Results:
TWG Engineering delivered a complete bridge design and documentation package, supporting the safe and efficient replacement of the structure and improving roadway reliability. The project was completed in 2018.
