Palmer Engineering led the replacement of a 1930s-era, 27-span continuous concrete slab bridge carrying US 20 over multiple Norfolk Southern Railroad tracks. The project required a customized, forward-thinking design to address complex geometry and future infrastructure needs.

Project Challenges

• High Skew Alignment: The bridge needed to cross railroad lines at a sharp skew, creating significant design complexity.

• Future Expansion: The new structure had to accommodate the possibility of two additional railroad tracks.

• Durability & Safety: Long-term performance, safety, and cost-effectiveness were critical design factors.

Engineering Solutions

• Evaluated Multiple Structure Types: Options studied included precast concrete arches, steel plate girder bridges with post-tensioned pier caps, and skewed prestressed concrete beams.

• Preferred Design: A prestressed concrete beam bridge oriented at a significant skew was selected for its efficiency and long-term performance.

• Advanced Structural Analysis: Finite element modeling was used to create a highly customized, precise design solution.

Recognition & Awards

Completed in 2016, the project earned multiple honors for innovation and collaboration, including:

• 2017 ODOT Partnering Award

• Association for Bridge Construction and Design Award

• ACEC Ohio Award

• ACEC National Recognition

• American Society of Highway Engineers (ASHE) Award

Lasting Impact

The US 20 Bridge Replacement demonstrates Palmer Engineering’s expertise in bridge engineering, structural design, and transportation safety. By delivering a cost-effective, award-winning solution, the project strengthened Ohio’s infrastructure and set a benchmark for future bridge projects.