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The Boulder Bridge is a historic bridge located in the Washington, D.C. portion of Rock Creek Park, an urban national park listed on the National Register of Historic Places. Boulder Bridge was constructed in 1902 and carries Beach Drive across Rock Creek , a tributary of the Potomac River .
The route is 4.5 miles (7.2 km) long and ascends an elevation of 640 feet (195.1 m) through mountainous terrain along with trestles, cuts, fills, and a grand loop. [ 3 ] [ 4 ] The railroad is situated near I-70, with Silver Plume Depot sitting adjacent to the eastbound on-ramp.
A spiral bridge, loop bridge, helix bridge, or pigtail bridge is a road bridge which loops over its own road, allowing the road to climb rapidly. This is useful in steep terrain, or where the approach road to a bridge would terminate too far from the bridge's end. Despite its name, the typical shape of a spiral bridge forms a helix, not a spiral.
Then after the intersection with Bramble Street, US 191 continues northeast, while BL-90 curves southeast onto Big Timber Loop Road (Old U.S. 10). After leaving the heart of the city, it passes by the River Rocks Campground on the foot of a bridge over the Boulder River, then the Overland Golf Course.
In some cases, a circumferential route is formed by the combination of a major through highway and a similar-quality loop route that extends out from the parent road, later reconnecting with the same highway. Such loops not only function as a bypass for through traffic, but also to serve outlying suburbs. In the United States, an Interstate ...
They are loop roads and found in many road systems in the United States including the U.S. Highway system and various state and county route systems. Alternate routes were created as a means of connecting a town (or towns) desired to be on a route that had been routed differently to put another important town or city on the route, or, in the ...
The first successful ascent of a new route by any means, including aid climbing (i.e. not via free climbing). first free ascent. Also FFA. The first ascent of a new route without aid, following the free climbing criteria of a redpoint. first female free ascent. Also FFFA. The first female to complete a free ascent of a route that has already ...
State Route 236 (SR 236) is a state highway in the U.S. state of California. It is an approximately 18-mile (29 km) C-shaped loop route of State Route 9 in the Santa Cruz Mountains that serves Big Basin Redwoods State Park. SR 236 begins in the community of Boulder Creek and ends at Governor's Camp in Big Basin State Park near the Waterman Gap.