HMH Engineering provided CE&I services for Shoshone County and the Local Highway Technical Assistance Council for the construction of this 210 foot, two-span, pre-stressed bulb-tee girder bridge. The new bridge was built higher and with a longer span to provide less constriction to the South Fork of the Coeur d’Alene River. The first construction season consisted of building the new bridge just East of the old one and backfilling the abutments. In the second season the new roadway alignment was built, in addition to culvert installations, water system improvements, staged riprap placement and demo of the old bridge.
Project specific challenges included maintaining access for high seasonal traffic flow, high truck traffic from a local rock crushing plant, and pedestrian traffic on the Trail of the Coeur d’Alenes while constructing the new raised vertical alignment.
This Project Included:
⦁ Shell Pile Foundations
⦁ Reinforced abutment backfill
⦁ Eight wide flange pre-stressed girders over two spans
New vertical and horizontal alignments for the roadway
⦁ New alignment for the Trail of the Coeur d’Alenes and increased parking capacity at the trailhead
⦁ Water system improvements