SR6011 over Roaring Brook

The Harrison Avenue Bridge was a three-span continuous composite steel multi-girder bridge that carried SR 6011 over SR 3022, the Central Scranton Expressway, Roaring Brook gorge, and the Delaware, Lackawanna & Western Railroad (DL&W). The 200-foot main span over Roaring Brook gorge was comprised of four concrete arch ribs and columns which supported the deck of the structure. The smaller 75-foot barrel arches spanned the expressway and railroad, which paralleled both sides of the gorge.

Over 15,000 vehicles and a significant volume of pedestrian traffic utilized the Harrison Avenue Bridge each day. This arterial transportation route provided a vital link between the neighborhoods, schools, businesses, hospitals, and other services on both sides of the Roaring Brook gorge. The bridge was also used extensively by ambulances and other emergency service providers. With the bridge deteriorating due to advanced age, long-term improvements were needed to maintain a safe crossing for travelers on Harrison Avenue. SJH developed girder erection plans for this structure and designed supports for the temporary towers. Under this contract, we provided engineering services under the following tasks:

Task 1 – Developed calculations for Span 3 over the railroad, including pick and in-place stress analysis, girder restraints, temporary splice design, and rigging design
Task 2 – Developed calculations for Span 1 over the railroad, including pick and in-place stress analysis, girder restraints, temporary splice design, and rigging design
Task 3 – Developed calculations for remaining picks
Task 4 – Performed capbeam checks and other miscellaneous design calculations