U.S. 15 passes through Frederick County, Maryland north from the Point of Rocks Bridge spanning the Potomac River at Point of Rocks to the Pennsylvania state line north of Emmitsburg. The 37.85 mile long route within the Free State joins the city of Frederick and the towns of Thurmont and Emmitsburg along a limited access highway or controlled access arterial. The southern 7.22 miles is a two lane highway branching south from U.S. 340 to Loudon County, Virginia
U.S. 15 was realigned eastward onto a 2.8 mile long bypass of Emmitsburg in 1968. The American Association of State Highway Officials (AASHO) approved a request from the State Roads Commission of Maryland for the relocation to the four lane highway on November 27, 1966. AASHO also approved at the time the establishment of U.S. 15 Business along MD 806 through Emmitsburg.
The Maryland State Roads Commission completed a new highway for U.S. 15 between Points of Rocks and U.S. 340 at Jefferson in 1969. Approved by AASHO on June 24, 1969, U.S. 15 was formally relocated off Buckeystown Pike (MD 85) and I-70S between Point of Rocks and the Frederick Bypass at U.S. 340 to the new facility, and along an overlap with U.S. 340 east to U.S. 40.
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| U.S. 15 north joins U.S. 340 east from Point of Rocks and Leesburg, Virginia. 07/16/05 |
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| Mt. Zion Road travels south from MD 180 (Jefferson Pike) to U.S. 15/340 at Cap Stine Road. 07/16/05 |
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| Cap Stine Road continues Mt. Zion Road south 1.5 miles to MD 351 via Renn Road. Mt. Zion Road north meanders to Jefferson Boulevard, serving a handful of rural subdivisions. 07/16/05 |
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| A folded diamond interchange joins U.S. 15 (Catoctin Mountain Highway) with MD 140 (Main Street west / Taneytown Pike east) outside Emmitsburg. The expressway continues north from MD 140 to an intersection with North Seton Avenue (the former alignment of U.S. 15). 06/04/05 |
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| Seton Avenue intersects U.S. 15 outside Emmitsburg opposite Welty Road north from Harney Road. 06/04/05 |
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| Old Gettsyburg Road (former U.S. 15) stems north from Welty Road to the east of U.S. 15 (Catoctin Mountain Highway) toward the Pennsylvania state line. Bicyclists are discouraged from U.S. 15 north of Seton Avenue as the Expressway transitions into a freeway in Pennsylvania. 06/04/05 |
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| Approaching the Mason Dixon Line, U.S. 15 upgrades to a full freeway. Old Gettysburg Road becomes Emmitsburg Road in Pennsylvania and U.S. 15 Business leading north to Steinwehr Avenue in Gettysburg. 06/04/05 |
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| U.S. 15-340 combine southwest from Frederick en route to Charles Town and Leesburg, while U.S. 40 extends east to I-70 and Interstate 270 south. 10/12/01 |
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| U.S. 15 branches southwest from U.S. 40 at the north end of U.S. 340. U.S. 40 continues to the exchange joining I-70 and I-270. 10/12/01 |
Photo Credits:10/12/01, 06/04/05, 07/16/05 by AARoads
Connect with:
Interstate 70
Interstate 270
U.S. 40
U.S. 340
Route 140
Page Updated 08-27-2010.
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