Chelan - WEST MONITOR BRIDGE
Project Number: 1301
From milepost 0.14 to milepost 0.18
RATA Funds: $250,000
Legislative District: 12
Status:
Date Approved: 2009
The West Monitor Bridge was constructed in 1907 and was part of the old state highway, which zigzagged through the Wenatchee River valley, crossing the Wenatchee River several times. It provided the main access to Monitor Flats and to the Town of Monitor, and is the only bridge to survive the 1948 floods of the Wenatchee River. It is listed in the National Register of Historic Places (NRHP) and was documented in the Historic Bridges and Tunnels in Washington State Thematic Resources nomination, prepared by the Washington State Office of Archaeology and Historic Preservation in 1980.
The West Monitor Bridge is one of two steel Pratt through-truss bridges constructed in the early 20th century with a span of less than 250 feet, and is considered significant in the areas of engineering and transportation. This bridge appears to be one of the oldest and least-altered examples of this once-common bridge type remaining in Washington.
The West Monitor Bridge was constructed by the Puget Sound Bridge and Dredging Company. It is 320 feet long and is comprised of two 140-foot, steel pin-connected Pratt through-trusses.
The bridge was suffering from corrosion of the primary truss members, and had been damaged by vehicles striking the truss members.
The rehabilitation of the bridge consisted of completely dismantling the trusses, removing all of the paint, and repairing and replacing members. The truss was then repainted and re-erected over the Wenatchee River in 2011. The rehabilitation of the West Monitor Bridge preserves its significant features and will allow it to serve the local community for many more years. The Chelan County Department of Public Works successfully completed the rehabilitation of this historic bridge in partnership with Washington State Department of Transportation, CH2M HILL, FHWA, the County Road Administration Board, and Mowat Construction Company.
The West Monitor Bridge is one of two steel Pratt through-truss bridges constructed in the early 20th century with a span of less than 250 feet, and is considered significant in the areas of engineering and transportation. This bridge appears to be one of the oldest and least-altered examples of this once-common bridge type remaining in Washington.
The West Monitor Bridge was constructed by the Puget Sound Bridge and Dredging Company. It is 320 feet long and is comprised of two 140-foot, steel pin-connected Pratt through-trusses.
The bridge was suffering from corrosion of the primary truss members, and had been damaged by vehicles striking the truss members.
The rehabilitation of the bridge consisted of completely dismantling the trusses, removing all of the paint, and repairing and replacing members. The truss was then repainted and re-erected over the Wenatchee River in 2011. The rehabilitation of the West Monitor Bridge preserves its significant features and will allow it to serve the local community for many more years. The Chelan County Department of Public Works successfully completed the rehabilitation of this historic bridge in partnership with Washington State Department of Transportation, CH2M HILL, FHWA, the County Road Administration Board, and Mowat Construction Company.