paragraph_text: The Old Mill Road Bridge is a historic bridge near Rocky Ridge, Frederick County, Maryland, United States. The bridge spans Owens Creek southwest of Rocky Ridge on Old Mill Road. It is a Pratt half-hip through truss structure in a single span long and . It was built in 1882 by the Pittsburgh Bridge Company, Pittsburgh, Pennsylvania.

paragraph_text: The North Grand Island Bridge is a pair of twin two-lane truss arch bridges spanning the Niagara River between Grand Island and Niagara Falls in New York, United States. Each bridge carries one direction of Interstate 190 (I-190). Both crossings are operated by the New York State Thruway Authority as part of the Niagara Thruway. The northbound span opened in 1935; the southbound span was finished in 1965.

paragraph_text: The John Basilone Veterans Memorial Bridge is a bridge in New Jersey that crosses the Raritan River. The bridge was built in 2005 to replace the smaller Nevius Street Bridge built in 1886. The Nevius Street Bridge today functions as a pedestrian bridge. The bridge connects First Avenue and what used to be the short one way block of Lyman Street in Raritan with River Road in Hillsborough. After crossing into Hillsborough, the road curves to meet up with the old alignment with the Nevius Street Bridge. The bridge is named for local World War II hero, John Basilone. The bridge has a pedestrian tunnel underneath its northern approach, as part of the Raritan River Greenway.

paragraph_text: The Cohos Trail is a hiking trail running through northern New Hampshire in the United States, connecting the northern and southern ends of Coos County. It begins at Notchland, near Crawford Notch State Park, and follows a series of trails to the hamlet of Fabyans, then over Cherry Mountain to the town of Jefferson, over Mount Waumbek, along the Kilkenny Ridge Trail to Stark, through Nash Stream Forest to Dixville Notch, and north to the Connecticut Lakes and finally the Canada–US border at the southern edge of Quebec. There it connects with the Sentier Frontalier's trail to Mount Megantic and Mount Gosford in Canada.

paragraph_text: The Founders Bridge is one of the three highway bridges over the Connecticut River in Hartford, Connecticut. The steel stringer bridge carries the Route 2 expressway, and also crosses over Interstate 91 (which runs parallel to the river). the bridge had an average daily traffic of 29,200.

paragraph_text: The Burlington–Bristol Bridge is a truss bridge with a lift span crossing the Delaware River from Burlington, New Jersey to Bristol Township, Pennsylvania in the United States. Construction of the bridge started on April 1, 1930, and the bridge opened to traffic on May 2, 1931. The bridge carries NJ 413 and PA 413.

paragraph_text: The Dartford - Thurrock River Crossing, commonly known as the Dartford Crossing and until 1991 the Dartford Tunnel, is a major road crossing of the River Thames in England, carrying the A282 road between Dartford in Kent to the south with Thurrock in Essex to the north. It consists of two bored tunnels and the cable - stayed Queen Elizabeth II Bridge. The only fixed road crossing of the Thames east of Greater London, it is the busiest estuarial crossing in the United Kingdom, with an average daily use of over 130,000 vehicles. It opened in stages: the west tunnel in 1963, the east tunnel in 1980 and the bridge in 1991. The crossing, although not officially designated a motorway, is considered part of the M25 motorway's route, using the tunnels northbound and bridge southbound. Described as one of the most important road crossings in Britain, it suffers from heavy traffic and congestion.

paragraph_text: The Bob Cummings Lincoln Trail Bridge crosses the Ohio River and connects the towns of Cannelton, Indiana and Hawesville, Kentucky. Indiana State Road 237 becomes Kentucky Route 69 upon entering Hawesville.

paragraph_text: The United States Congress passed an enabling act on March 3, 1875, specifying the requirements for the Territory of Colorado to become a state. On August 1, 1876 (28 days after the Centennial of the United States), U.S. President Ulysses S. Grant signed a proclamation admitting the state of Colorado to the Union as the 38th state and earning it the moniker ``Centennial State ''. The borders of the new state coincided with the borders established for the Colorado Territory.

paragraph_text: The Old Enon Road Stone Arch Culvert is a historic limestone bridge in southern Clark County, Ohio, United States. It carries Rocky Point Road over Mud Run, a tributary of the Mad River, just west of its intersection with Old Mill Road. Located approximately east of Enon in eastern Mad River Township, it was constructed under the leadership of stonemason Samuel Taylor in 1871. In the past, the region was dotten with stone culverts, which were built in the nineteenth and early twentieth centuries to carry roads over small watercourses. Today, few stone culverts survive in Ohio; the Old Enon Road culvert is both Clark County's only such bridge in daily use and the oldest bridge of any type still open to daily traffic throughout the county.

paragraph_text: New York's 88.4 miles (142.3 km) of trail contain very little elevation change compared to other states. From south to north, the trail summits many small mountains under 1,400 feet (430 m) in elevation, its highest point in New York being Prospect Rock at 1,433 feet (437 m), and only 3,000 feet (910 m) from the border with New Jersey. The trail continues north, climbing near Fitzgerald Falls, passing through Sterling Forest, and then entering Harriman State Park and Bear Mountain State Park. The lowest point on the entire Appalachian Trail is in the Bear Mountain Zoo 124 feet (38 m). It crosses the Hudson River on the Bear Mountain Bridge. It then passes through Fahnestock State Park, and continues northeast and crosses the Metro - North Railroad's Harlem Line. This track crossing is the site of the only train station along the trail's length. It enters Connecticut via the Pawling Nature Reserve. The section of the trail that passes through Harriman and Bear Mountain State Parks is the oldest section of the trail, completed in 1923. A portion of this section was paved by 700 volunteers with 800 granite - slab steps followed by over a mile of walkway supported by stone crib walls with boulders lining the path. The project took four years, cost roughly $1 million, and was officially opened in June 2010. The project was done by the New York -- New Jersey Trail Conference. The New York -- New Jersey Trail Conference maintains and updates the Appalachian Trail in New York.

paragraph_text: The Riverside Avenue Bridge is the only cast-iron bridge in Connecticut and one of a small number still in use in the United States. It carries Riverside Avenue over the New Haven Line railroad tracks in the Riverside section of Greenwich, Connecticut. The bridge was part of an earlier span built in 1871 over the Housatonic River by the New York and New Haven Railroad, and when that bridge was replaced, part of it was erected in Riverside in 1895. It was placed on the National Register of Historic Places in 1977.

paragraph_text: The Arlington Memorial Bridge is a Neoclassical masonry, steel, and stone arch bridge with a central bascule (or drawbridge) that crosses the Potomac River at Washington, D.C., the capital of the United States. First proposed in 1886, the bridge went unbuilt for decades thanks to political quarrels over whether the bridge should be a memorial, and to whom or what. Traffic problems associated with the dedication of the Tomb of the Unknown Soldier in November 1921 and the desire to build a bridge in time for the bicentennial of the birth of George Washington led to its construction in 1932.

paragraph_text: The Old Trails Bridge over the Colorado River, brought a now-abandoned portion of U.S. Route 66 across from Needles, California to Topock, Arizona. It is a brace-ribbed through arch bridge that was built in 1915-1916. It served as a highway bridge until 1947 when the Red Rock Bridge, formerly a railroad bridge, was modified for highway use. The Old Trails Bridge was later converted to a pipeline bridge.

paragraph_text: Cherokee City is an unincorporated census-designated place in Benton County, Arkansas, United States. As of the 2010 census, its population is 72. It is the location of (or is the nearest community to) Coon Creek Bridge, which is located on Cty Rd. 24 and is listed on the National Register of Historic Places. The community was named for the Cherokee Indians, since the Trail of Tears crossed the landscape when the Cherokee migrated west to Indian territory, now Oklahoma in the late 1830s. The town is about 5 miles east of Oklahoma and 4 miles south of the Missouri state line.

paragraph_text: Al Garhoud Bridge (In Arabic: جسر القرهود) is one of three road bridges over Dubai Creek, and one of five crossings, in Dubai, United Arab Emirates. Al Garhoud Bridge forms the eastern end of the road toll (called Salik) that went into effect on 1 July 2007. Since the beginning of Salik, Al Garhoud Bridge has seen low amounts of traffic for Dubai.

paragraph_text: Cecil is an unincorporated community in Morrow County, Oregon, United States. It is about northwest of Ione, on Oregon Route 74. The Oregon Trail crossed Willow Creek here, and it was once an important stagecoach stop.

paragraph_text: The Green Bay Road Bridge is a Pratt pony truss bridge across the Manitowoc River in Manitowoc Rapids. The bridge was built in 1887 by the Wisconsin Bridge and Iron Company and was the second river crossing built at its location. Originally a road bridge, the bridge is now used for a bicycle and walking trail; it is in good condition and is considered a historically significant example of a pony truss road bridge. The bridge was added to the National Register of Historic Places on August 3, 1998.

paragraph_text: Chenango Bridge is a hamlet in the southern part of the Town of Chenango in Broome County, New York, United States. It lies where State Route 12A (Chenango Bridge Road) crosses the Chenango River. The population was 2,883 at the 2010 census, which lists the community as a census-designated place.

paragraph_text: The Freedom Trail is a 2.5 - mile - long (4.0 km) path through downtown Boston, Massachusetts, that passes by 16 locations significant to the history of the United States. Marked largely with brick, it winds between Boston Common to the Bunker Hill Monument in Charlestown. Stops along the trail include simple explanatory ground markers, graveyards, notable churches and buildings, and a historic naval frigate. While most of the sites are free or suggest donations, the Old South Meeting House, the Old State House, and the Paul Revere House charge admission. The Freedom Trail is overseen by the City of Boston's Freedom Trail Commission and is supported in part by grants from various nonprofits and foundations, private philanthropy, and Boston National Historical Park.

Question: When did the state crossed over by Old Trails Bridge become part of U.S.?
Answer: August 1, 1876