Tulpehocken Creek Bridge (SR 3063, Section A01)

CCJM’s expertise in navigating environmental restrictions contributed to a new structure that includes context sensitive design consistent with the historic character of the Tulpehocken Crrock veineek Historic District. The project site is located within the Tulpehocken Creek Historic District which includes remains of the Royer Grist Mill, the Marion Rod and Gun Club, the Millrace and the former Union canal to the north. CCJM’s bridge design was coordinated with the State Historic Preservation Office (SHPO) and local stakeholders. These consulting parties agreed to include recessed panels on the outside of the bridge railing, upstream elevationconcrete end posts and caps similar to those on the existing bridge, and stained concrete to minimize the brightness caused by the reflection of light off of new concrete. The final touch to affirm the historic milieu was the re-installation of the original dam control gears.

The original 3-span Richland Road Bridge incorporated a dam beneath the structure, providing flow to a millrace in the near approach. The dam impoundment creadam controlsted a large, exceptional value wetland immediately upstream of the bridge. State agencies required the removal of the dam, however, removal would cause the complete loss of the the wetland. CCJM accomplished the protection of the wetland by using a series of rock veins designed with fish migration and habitat creation in mind while maintaining the wetland and surface water function. Additionally, these rock veins both upstream and downstream of the new structure maintain the base flow through the adjacent millrace, fulfilling the purpose of the original dam, meeting current state requirements and sustaining the recreational nature of the mill race for the adjacent Club.

Since the Tulpehocken is listed as a State Scenic River, the construction and demolition stating areas were screened by a vegetative buffer. The materials used in construction reflect the natural character of the area. Additionally, the Tulpehocken Creek is listed as a high quality-cold water fishery, stocked with trout. Wild trout reproduce in this area necessitating in-stream construction restrictions.

Using a “Right-Sized” approach, the new structure significantly improves safety, reduced long-term maintenance and preserved historic and cultural resources by completely avoiding impacts to the historic Royer Grist Mill ruins, millrace and Union Canal. Coupled with other context sensitive elements, this met the needs of the historic district.