Replacement of Western Hills Viaduct

under planning

The City of Cincinnati and Hamilton County are planning to replace the Western Hills Viaduct, a 90-year-old structure that carries vehicles over the Mill Creek Valley and a large rail yard. The new span will be an extradosed bridge, which is a bridge whose deck provides primary load-bearing support with cable stays for supplemental support. It will have eight lanes, a protected, multi-use path on the south side and sidewalk on its north side. The project also includes the demolition of six buildings and the relocation of a Duke Energy substation and transmission line. Construction is expected to start in 2025 and be completed by 2030. The design engineer is AECOM. The city plans to hire a construction management firm this year through a qualifications-based selection process.