Nittany and Bald Eagle Railroad Bridges | Keller Engineers

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Tyrone Railroad Bridges 0.05, 0.24, and 0.27

Owner: SEDA-COG Joint Rail Authority (JRA) Project Description:

The purpose of the Tyrone Railroad Bridges rehabilitation project was to raise the thru-girder railroad bridge (Bridge 0.24) over 10th Street in the Borough of Tyrone. This bridge was frequently impacted by large trucks due to its height. The project was designed to provide a roadway clearance of 14’-8 ½” to eliminate the need for a clearance posting and prevent the frequent truck impacts. This project includes the replacement of deteriorated steel components, replacement of the timber tie deck, and raising of Bridge 0.24. To accommodate the raise in railroad alignment, the existing masonry retaining walls along Washington Avenue were modified and precast concrete parapet segments were installed along the top of the wall. In addition, the project included work at the NBER 0.05 Bridge which consisted of replacement of the timber tie deck, placement of scour protection at Piers 1 and 2, and replacement of pedestrian walkway canopies that protect a pedestrian bridge owned by the County of Blair.

The challenge for this project was the need to complete the project within a 14-calendar day planned track outage window, with minor work completed at other times between trains. All major work was completed by the contractor in the 14-calendar day window starting on September 9, 2015. In the following weekend, the timber tie deck on the NBER 0.05 Bridge was completed.

This project is unique for a railroad bridge rehabilitation due to the extent of public and agency participation. The bridge was a frequent topic of discussion due to the ongoing issue of truck impacts and the disruption that this caused to the railroad, businesses, the traveling public, and the surrounding neighborhood.

Project Photos: (click on thumbnails to view larger images)