Interstate 270, Major interstate highway in Montgomery and Frederick Counties, United States
Interstate 270 spans 34.7 miles from Bethesda to Frederick, featuring express and local lanes to accommodate high traffic volumes.
The construction started in the 1950s as U.S. 240 expressway through Frederick County and received its current designation in 1973.
The road corridor contains numerous biotechnology companies and research facilities, establishing itself as a center for scientific advancement.
The highway includes high-occupancy vehicle lanes during peak hours between Bethesda and Gaithersburg for vehicles carrying multiple passengers.
The road configuration changes from twelve lanes in Montgomery County to four lanes in Frederick County as population density decreases.
Location: Montgomery County
Location: Frederick County
Inception: 1975
GPS coordinates: 39.01868,-77.10353
Latest update: May 27, 2025 08:51
Washington D.C. Temple
3.3 km
United States National Library of Medicine
2.7 km
Uniformed Services University of the Health Sciences
2.5 km
Columbia Country Club
3.1 km
Bethesda Meeting House
1.1 km
Riley-Bolten House
3.2 km
Bethesda Theatre
3.6 km
Woodend
3.6 km
Congregation Beth El
2.9 km
Kensington Historic District
2.5 km
North Bethesda Market
2.8 km
Rock Creek Woods Historic District
3.7 km
Cedar Lane Unitarian Universalist Church
1.4 km
Garrett Park Historic District
2.1 km
Moreland
3.5 km
Music Center at Strathmore
1.4 km
Mansion at Strathmore
1.4 km
Wyngate Woods Park
2.5 km
Bethesda Trolley Trail
801 m
Noyes Library For Young Children
2.7 km
Davis Library
2.2 km
Bradley Hills Park
3.5 km
St. Jane Frances de Chantal, Bethesda
1.3 km
The Ratner Museum
1.5 km
Luxmanor Park
3.7 km
Chevy Chase Library
3.8 km
Kensington Park Library
2.2 km
Gifford Pinchot Forest Building
599 mReviews
Visited this place? Tap the stars to rate it and share your experience / photos with the community! Try now! You can cancel it anytime.
Discover hidden gems everywhere you go!
From secret cafés to breathtaking viewpoints, skip the crowded tourist spots and find places that match your style. Our app makes it easy with voice search, smart filtering, route optimization, and insider tips from travelers worldwide. Download now for the complete mobile experience.
A unique approach to discovering new places❞
— Le Figaro
All the places worth exploring❞
— France Info
A tailor-made excursion in just a few clicks❞
— 20 Minutes