Boone County, IN
SR 47 Small Structure Replacement 40.10
The existing 72″ metal pipe arch structure under SR 47 in Boone County was rusting along the invert and was too short for the roadway section, resulting in steep drop-offs within a foot of the travel lanes. HWC designed a replacement structure that provided Level 1 lane and shoulder criteria. The structure ends were placed beyond the obstruction-free zone to improve safety and negate the cost of the guardrail. The project design also included hydraulic design, a Level 1 environmental document, and right-of-way engineering. There were no utilities impacted by this project. The construction cost was $320,000.