paragraph_text: Giddings Road Bridge is a covered bridge spanning Mill Creek in Jefferson Township, Ashtabula County, Ohio, United States. The bridge, one of currently 16 drivable bridges in the county, is a single span Pratt truss design, built with funding from an ODOT Timber Grant. The bridge’s WGCB number is 35-04-62, and it is located approximately 2.7 mi (4.3 km) northeast of Jefferson.

paragraph_text: Spencerville is an unincorporated community located in Spencer Township, DeKalb County, Indiana, United States. The only covered bridge in DeKalb County is located in Spencerville.

paragraph_text: The Sheely Bridge, originally known as the Carbondale Bridge, carries pedestrian traffic across the Roaring Fork River at Mill Street Park in Aspen, Colorado, United States. It is a short steel truss bridge originally located downstream in Carbondale and later moved to its present location.

paragraph_text: Alabama (adopted 1953, Constitution 2016) Arizona (Constitution, State Constitution Article 25 approved 1946) (adopted 1944) Arkansas (Constitution, 1947, Amendment 34) Florida (Constitution, 1944, revised 1968, Article 1, Section 6) Georgia (adopted 1947) Idaho (adopted 1985) Indiana (State law, 2012) Iowa (adopted 1947) Kansas (Constitution, 1958, Article 15, Section 12) Kentucky (adopted 2017) Louisiana (adopted 1976) Michigan (State law, 2012) Mississippi (Constitution, adopted 1954) Missouri (adopted 2017) (Postponed by petition to 2018 for citizen voting) Nebraska (Constitution and statute, adopted 1946) Nevada (adopted 1951) North Carolina (adopted 1947) North Dakota (adopted 1947) Oklahoma (Constitution, adopted 2001) South Carolina (adopted 1954) South Dakota (adopted 1946) Tennessee (adopted 1947) Texas (adopted 1947, revised 1993) Utah (adopted 1955) Virginia (adopted 1947) West Virginia (adopted 2016) (Went into effect September 2017 due to lower court injunctions) Wisconsin (adopted 2015) Wyoming (adopted 1963)

paragraph_text: The Malleco Viaduct () is a railway bridge located in central Chile, passing over the Malleco River valley, south of Collipulli in the Araucania Region. It was opened by President José Manuel Balmaceda on October 26, 1890. At that time, it was the highest such bridge in the world. The Panamerican Highway passes right next to the viaduct.

paragraph_text: The Uhlerstown–Frenchtown Bridge is a free bridge over the Delaware River, owned and operated by the Delaware River Joint Toll Bridge Commission. The bridge carries Bridge Street, connecting New Jersey Route 12 in Frenchtown, Hunterdon County, New Jersey, with Pennsylvania Route 32 in Uhlerstown, located in Tinicum Township, in Bucks County, Pennsylvania, United States.

paragraph_text: Natural Pier Bridge is a steel Warren through truss bridge spanning the Clark Fork river located west of Alberton, Montana, United States, which incorporates a natural rock outcrop as anchorage for a pier. It was nominated to the National Register of Historic Places as part of a related group of historic Montana bridges known as Montana's Historic Steel Truss Bridges and achieved listing on January 4, 2010. Built in 1917 by the Lord Construction Company of Missoula, Montana, it is one of only a few remaining bridges of its type in the state, and of those it is the only one that incorporates a natural feature in its design.

paragraph_text: Motley Slough Bridge is a small bridge designated a Mississippi Landmark and on the U.S. National Register of Historic Places, located in Lowndes County, Mississippi. It is a single span iron Pratt pony truss bridge built in 1920. It "embodies the distinctive characteristics of a type, period or method of construction.".

paragraph_text: Mechanicsville Road Bridge is a covered bridge spanning the Grand River in Austinburg Township, Ashtabula County, Ohio, United States. The bridge, one of currently 16 drivable bridges in the county, is the longest single span covered bridge in the county, and is believed to be the oldest in the county as well. The bridge is a Howe truss design, with laminated arches added during its renovation in 2003-04. The bridge’s WGCB number is 35-04-18, and it is located approximately 4.3 mi (7.0 km) southeast of Geneva.

paragraph_text: Tee Pee City is a ghost town located in eastern Motley County near Matador, Texas. The ghost town is near the confluence of Tee Pee Creek and the Middle Pease River in eastern Motley County. The site, originally a Comanche campground, derived its name from the numerous teepee poles found up and down the creek by early settlers.

paragraph_text: The Bullards Bridge (or simply Bullards Bridge) is a vertical-lift bridge that spans the Coquille River near where the river empties into the Pacific Ocean, just north of Bandon, Oregon, United States. One of only two vertical-lift bridges on the Oregon Coast Highway (U.S. Route 101), it was completed in 1954. The lift span is flanked by two camelback truss spans. It is located immediately east of Bullards Beach State Park.

paragraph_text: Long Creek Bridge is a bridge that spans across Long Creek. It is from the Canada–United States border and from Estevan, Saskatchewan, Canada. The bridge was originally a wooden bridge that had reached the end of its useful life, and in 2009 work started on a new precast, pre-stressed concrete bridge as part of the federal government's National Action Plan.

paragraph_text: Kings Highway Bridge was located on the Nansemond River in the independent city of Suffolk, Virginia, United States. Built in 1928, it carried traffic on the Kings Highway, also known as State Route 125, for over 75 years.

paragraph_text: The Sundial Bridge (also known as the Sundial Bridge at Turtle Bay) is a cantilever spar cable-stayed bridge for bicycles and pedestrians that spans the Sacramento River in Redding, California, United States and forms a large sundial. It was designed by Santiago Calatrava and completed in 2004 at a cost of US$23.5 million. The bridge has become iconic for Redding.

paragraph_text: Albert Fink (October 27, 1827 – April 3, 1897) was a German-born civil engineer who worked in the United States. He is best known for his railroad bridge designs, which helped revolutionize the use of iron for American railroad bridge construction. He devised the Fink truss and many truss bridges, especially the Fink-Type Truss Bridge.

paragraph_text: Motley Rice LLC is one of the largest American plaintiffs' litigation firms. Founded in 2003, Motley Rice seeks justice and accountability on behalf of people and institutions harmed by wrongdoing and negligence. The firm is currently involved in litigation seeking to hold accountable those who allegedly financed the September 11, 2001, attacks. Motley Rice is headquartered in Mount Pleasant, South Carolina, and has offices in eight cities across the United States.

paragraph_text: The Carmine Liberta Bridge is a two-lane steel through truss bridge over the Wallkill River. It carries New York State Route 299 over the river between the Town of New Paltz on the west side and the Village of New Paltz on the east. The current bridge, the fourth at that location, was built in 2016.

paragraph_text: Motley is a locality in the Toowoomba Region of the Darling Downs in southern Queensland, Australia. At the 2016 Australian Census Motley and surrounds recorded a population of 9.

paragraph_text: Creelsboro Natural Bridge (more commonly referred to as Rock House or the Rockhouse) is a natural bridge in southwestern Russell County, Kentucky, United States. It is located near the community of Creelsboro, approximately downstream from Wolf Creek Dam, which impounds Lake Cumberland. The Rockhouse is classified as a "meander" natural bridge because it was created by river erosion of a cliff on the outer side of a sharp meander in the river. Jim Creek flows through it before merging into the Cumberland River. With a span of , it is the seventh largest natural bridge in the United States.

paragraph_text: Twilight is a census-designated place (CDP) in Boone County, West Virginia, United States. As of the 2010 census, its population was 90. Twilight is approximately 20 miles from Madison. Twilight is accessible from Boone County Route 26, which is located right off West Virginia Route 85 at the Van Bridge split.

Question: When did the state where Motley Slough Bridge is located become a right to work state?
Answer: 1954