2024-02-12-minutes-public-works-study-session

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Each year the County inspects approximately 50%of its bridges on an alternating basis to comply with the NBIS requirement of a 24-month maximum cycle. Inspection reports are then submitted to Washington State Department of Transportation. Bridge files including inspection reports are on file in the Department of Public Works. During these inspections potential problems and maintenance issues are identified and documented. BRIDGE PROJECT TEN-YEAR HISTORY 2023 A new Pre -stressed Concrete T-girder bridge was constructed on North Fork Teanaway Road crossing the North Fork Teanaway River replacing a weight restricted concrete structure with previous accident damage. This project was funded with federal funds. Also new in 2023, another Prestressed Concrete T-girder bridge on the Vantage Highway replaced an aging and weight restricted timber element bridge that crosses the Cascade canal. During the winter of 2023, Cooke Canyon Bridge (Bridge no. 80181) and Faust Road Bridge (Bridge no. 88212) have been removed and the new structures are currently under construction with an estimated completion date of spring of 2024. 2022 Improvements were completed along Kachess Lake Road at mile post 2.75. This removed the 36-inch CMP and constructed an 18-ft wide box culvert, Bridge no. 13072 (013). Stream channel work was completed to improve conveyance as well as minimize required maintenance from spring runoff events. Extensive preventative maintenance was completed on the North Thorp Highway Bridge (Bridge no. 97341) spanning the Yakima River. The work performed is to extend the life of the fracture critical structure. The paint system was removed, and a new paint system applied. Joint repairs and strip seals at the end of the bridges were also improved. Truss portals, which had been damaged from impact of oversize loads were repaired. Construction began on the replacement of structure no. 89342 located on Vantage Hwy at mile post 5.24 over the Cascade Canal. The existing timber bridge was damaged and load rated. Construction work was planned to occur over the winter during the time irrigation flows are reduced. 2021 Improvements were completed along the North Fork Teanaway Road at mile post 1.36. This removed the 36-inch CMP and 54-inch RCP and constructed a 40-ft precast concrete structure, Bridge no. 16301. Stream channel work was also completed to realign the channel into the historic pathway. 2020 An old 48" arch culvert on Bender Road over Whiskey Creek was replaced with a new three -sided precast box culvert by a land development company. The structure was placed in 2019 and paving and guardrail construction were completed in 2020. Coleman Creek at Vantage Highway #89332 is a new pre -cast 27 foot long flat slab bridge that replaced two existing culverts, a CMP culvert, and a concrete box culvert. The removal of the two culverts was initiated by Washington Department of Fish and Wildlife to eliminate the existing fish barrier. With a Kittitas County 2023 Annual Bridge Report