The 1906 bridge was relocated to this site in 1938. It was originally part of a two span bridge, and the other span was moved to serve as the Gootch's Bridge. The Green Valley Drive Bridge retains good historic integrity. Because the Gootch's Bridge is being demolished, this bridge will soon be the only remaining part of this 1906 two-span bridge. The Green Valley Drive Bridge sits on caissons and contains a wooden deck with an asphalt wearing surface.
This bridge has not been properly maintained and as such this bridge needs to receive a comprehensive preservation plan and project to rehabilitate or restore the bridge. Located on a paved city road, and with very little paint left on the bridge, salt and moisture are taking a toll on the bottom chord connections causing pack rust and likely section loss as well. It is not too late to preserve the bridge however, and corrective action to be taken now to ensure that the bridge does not deteriorate further.
Information and Findings From Missouri's Historic Bridge Inventory
Superstructure: steel, 8-panel, pin-connected Parker
Discussion of Bridge
This long-span pinned Parker truss carries the Moon Valley Road over Hinkson Creek at the outskirts of Columbia, the Boone County seat. Supported by steel cylinder piers and concrete abutments, the bridge appears to have been built at this location originally, but in fact it was built as part of a two-span structure over the Lamine River in Cooper County, and moved to its present site in 1938. The truss on the Moon Valley Bridge dates to 1906. In May of that year the Cooper County Court declared "an urgent necessity for re- building the Turley Bridge across the Lamine River." The county solicited competitive proposals for the new bridge's construction, but when all twelve of the bids came in too high, county surveyor Eth Hale negotiated with all of the bridge contractors to secure a lower price. The Kansas City Bridge Company received the contract for $8200.00. Using steel components rolled in Pittsburgh by Carnegie, KCBCo fabricated the two 170-foot spans and erected them on stone abutments and piers. The Turley Bridge was reported complete in March 1907. It carried traffic at the rural Cooper County crossing for almost thirty years before it was replaced by the state highway department with a heavier bridge [COOP03]. One of the spans of the 1907 bridge was moved to another Cooper County crossing [COOP04]. The other was moved in 1938 to this crossing on the Moon Valley Road near Columbia. It replaced an earlier truss that was destroyed when two cars crashed through its floor on University of Missouri Homecoming night. In November 1938 the county hired Columbia contractor Everett Stone to move one of the Turley Bridge trusses and re-erect it on the existing steel tubes from the earlier truss. It has functioned in place since the move, in unaltered condition. Pinned Pratt through trusses were erected by the thousands on Missouri's county road system in the late 19th and early 20th centuries. Parker trusses - polygonal-chorded Pratt variants -were built far less often. Less than three dozen pinned Parker trusses remain in use in Missouri today. With a construction date of 1906-07 and a span length of 170 feet, the Moon Valley Bridge typifies the remaining Parkers. Its locational integrity has changed considerably, due to the 1938 move, but the truss itself has retained a high degree of structural integrity, and it has acquired the patina of history in its more than 50 year service at this Boone County location.
Bridge Considered Historic By Survey: Yes
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