Skip to main content

The National Road - Maryland - Sideling Hill Cut


Interstate 68 through Western Maryland is a highly scenic drive, and the freeway's construction has its own collection of stories as well.  It is fitting then that both the scenery and history of this Interstate come together at Sideling Hill, a handful of miles west of Hancock and Interstate 70.  This impressive piece of highway engineering eliminated a narrow, twisty an treacherous climb up and down Sideling Hill along US 40 was a key piece in improving and opening up access to Western Maryland to the rest of the state.


When opened in August 1985, the impressive road cut was the culmination of  over a decade of studies, planning and construction.  The question of how to get around, over or through Sideling Hill involved five different alternatives.  Two of them via a tunnel and the other three a cut through the mountain. (1)  Overall costs, maintenance concerns, and hazardous materials concerns ruled out the lengthy tunnel projects.  Construction on Sideling Hill section of Interstate 68 would begin in the early 1980s.


Sideling Hill Cut is a 340' cut from the top of the mountain at this point which is 1620'. (2)  Sideling Hill's peak in Maryland is 1760' just to the north.  It took five million pounds of explosives to blast through the 4.5 million cubic tons (About 10 million tons) of earth that once occupied the cut. (2)  The cost to complete the cut was $20.1 million. (2)


The cut exposes rock formations that date to the Mississippian Period - or between 340 and 365 million years ago. (3) Various types of sandstones, siltstones, conglomerates, shale, and coal can be found within the cut. (3)


The Sideling Hill Cut as part of Interstate 68 was a considerable transportation improvement connecting Western Maryland to the rest of the state.  For decades, east/west traffic had to cross the mountain via a twisty, narrow two-lane US 40 to the south which featured a dangerous hairpin turn near the top of the mountain.  In August 1991, the Sideling Hill Exhibit and Visitors Center was opened along the westbound lanes of the freeway.  Access to the Exhibit Center via a parking lot and pedestrian bridge for eastbound travelers was included.  The Exhibit Center was one of Maryland's top tourist attractions; however, budget cuts in 2009 closed the exhibit center permanently.  Since then, the Sideling Hill exhibits are on permanent display at the Hancock Museum and Visitors Center and the scenic viewpoints remain as part of a rest area.


The rest area affords many excellent scenic views of not only the Sideling Hill Cut but North into Pennsylvania and east towards Hancock as well.  There are numerous scenic vantage points at the rest stop including steps that can allow you closeup views of the road cut and the exposed rock formations.  If you are traveling through on Interstate 68, the Sideling Hill Cut is a great stop to stretch out, walk around, enjoy the scenery and even have a picnic.


 Site Navigation:


Sources & Links:


Comments

Popular posts from this blog

Former US Route 50 and the Pioneer Route Lincoln Highway on Johnson's Pass Road

Johnson's Pass Road is one of the oldest highway corridors in California.  Johnson's Pass was part of the Lake Tahoe Wagon Road as it was completed during 1856 over the Sierra Nevada.  The pass would later be incorporated into the Pioneer Branch of the Lincoln Highway in 1913 and US Route 50 in 1926.  Johnson's Pass Road would be bypassed by a new alignment of US Route 50 over Echo Summit in 1938.  A replacement of the Meyers Grade east of Johnson's Pass would be opened to traffic in 1947.   Johnson's Pass Road remains accessible to traffic and is still signed by the Lincoln Highway Association.  Pictured as the blog cover is the view from the top of Johnson's Pass Road overlooking modern US Route 50 and Lake Tahoe.   Part 1; the history of Johnson's Pass Much of the history of what become the Lake Tahoe Wagon Road is discussed in the  September 1950 California Highways & Public Works  during its Centennial Edition.  The or...

Abandoned US Route 40 in the Truckee River Canyon

Within the Truckee River Canyon in the Sierra Nevada range numerous abandoned portions of US Route 40 can be found alongside modern Interstate 80.   This segment of highway was opened during 1926 as a bypass of the Dog Valley Grade which carried the early North Lincoln Highway and Victory Highway. The corridor of the Truckee River Canyon State Highway would be assigned as US Route 40 when the US Route System was commissioned during November 1926. During 1958 the segment of Interstate 80 between Boca, California and the Nevada state line was complete. When Interstate 80 opened east of Boca numerous obsolete portions of US Route 40 were abandoned. Some of these abandoned segments have been incorporated into the Tahoe-Pyramid Trail.  Part 1; the history of US Route 40 in the Truckee River Canyon The Truckee River Canyon for centuries has been an established corridor of travel known to native tribes crossing the Sierra Nevada range.  The first documented wagon crossi...

Former US Route 50 and the South Lincoln Highway from Folsom east to Placerville

The corridor of Folsom of Sacramento County east to Placerville of El Dorado County has been a long established corridor of overland travel dating back to the California Gold Rush.  The Folsom-Placerville corridor was once part of the path of the Lake Tahoe Wagon Road which became the first California State Highway and later the South Lincoln Highway.  In time the South Lincoln Highway's surface alignment was inherited by US Route 50.  The Folsom-Placerville corridor also includes the communities of; Clarksville, Shingle Springs and El Dorado. Part 1; the history of the Lake Tahoe Wagon Road, South Lincoln Highway and US Route 50 through Folsom-Placerville Folsom is located on the American River/Lake Natoma of eastern Sacramento County.  That lands now occupied by the City of Folsom were part of Rancho Rio de los Americanos prior to the finding of gold at Sutter's Mill during 1848.  During the California Gold Rush the lands of Rancho Rio de los Americanos were p...