In 2020, U.S. Bridge answered the call when Miami County asked for a new bridge at Croft Mill Road. The existing 107-foot bridge was in dire need of a replacement. Apart from the 40-year-old bridge being well beyond the point of repair, the bridge faced a 25% reduced load capacity and a narrow width of 15′-6″.

Besides the typical challenges of hydraulic adequacy and road profile constraints, the crossing at Croft Mill Road crossing spans across Greenville Creek, which is part of Ohio’s State Scenic River. Because of this, the Croft Mill Road crossing has a history and setting that creates an attractive and noticeable structure which deemed it as a public investment. Therefore, it was our intention to keep it this way.

Widening and Galvanizing

When replacing the crossing at Croft Mill Road, we knew we had to modernize the bridge’s width. The width of the old structure was much too slim for contemporary standards. As a result, we increased the width from 15′-6″ to 28 feet.

Along with widening the path, the new bridge features hot-dipped galvanized steel trusses. Galvanization bonds zinc to steel, resulting in a much more rugged and reliable bridge. Galvanizing also eliminates corrosion for up to 100 years. We are so confident in our galvanizing process that we provide a 35-year warranty on our galvanized steel beam bridge.

Choosing the Right Bridge

Miami County considered several structure types for the project. Prestressed concrete box beams or I-beams were considered, but at the time of construction, manufacturing limits eliminated the possibility of utilizing prestressed concrete box beams.

In addition to manufacturing constraints, the depth of the beams required for a span length would greatly affect the structure’s waterway adequacy. Another option was to raise the roadway significantly, but either choice proved unfeasible. This is why Miami County decided to pursue the galvanized truss option for replacement.

Preserving the Property

Overall, the goal was not only to increase the span length over the former bridge but also to limit the impacts on Greenville Creek and the surrounding property on the north side of the bridge. When visiting the site today, it’s almost impossible to notice the changes to the property because of how well the bridge fits into the surrounding area. We are proud of this accomplishment but even more proud of keeping Ohio’s rich history alive and untarnished.

Build To Last with U.S. Bridge

U.S. Bridge has been building bridges that withstand time for over 80 years. It’s our guarantee to provide the highest level of quality steel in our bridges. Contact us today to get started on your next project, or get a headstart on the process using our exclusive BridgeScope tool today.