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Fort McHenry Tunnel (I-95)

 

Fort McHenry TunnelWhen it opened to traffic in November 1985, the Fort McHenry Tunnel was the largest underwater highway tunnel, as well as the widest vehicular tunnel built by the immersed tube method in the world. The eight-lane tunnel is nearly 1.4-miles long and connects the Locust Point and Canton areas of Baltimore, crossing under the Patapsco River, just south of historic Fort McHenry. The tunnel is a vital link in I-95, the East Coast's most important interstate route. Including the tunnel and approach roadways, the facility is approximately 10.3 miles in length.

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The E-ZPass® electronic-toll-collection system is available at the Baltimore Harbor Tunnel.

Propane, Hazardous Materials & Oversized Vehicle Info:

Vehicles carrying bottled propane gas in excess of 10 pounds per container (maximum of 10 containers), bulk gasoline, explosives, significant amounts of radioactive materials, and other hazardous materials are prohibited from using both the Fort McHenry and Baltimore Harbor Tunnels. In addition, vehicles in excess of 13 feet, 6 inches, in height, or 96 inches (8 feet) in width; and all double trailers are prohibited from using the Baltimore Harbor Tunnel. For additional information regarding these restrictions, please call 410-537-1374.

Facility Contact Information:

  • Maryland Transportation Authority

    Fort McHenry Tunnel Administration Building

    3990 Leland Avenue

    Baltimore MD 21224
  • Local: 410-537-1250
  • Long Distance: 1-888-754-0185
  • TTY: 410-355-7024
  • E-mail: mdta@mdta.maryland.gov

Fort McHenry Tunnel Quick Facts:

  • Construction Dates: June 1980 - November 1985
  • Cost: $750 million
  • Location: Interstate 95 from the southern Baltimore City limit (Caton Avenue) to the northern Baltimore City limit, including the eight-lane tunnel and I-395 into downtown Baltimore
  • Crosses under the Patapsco River
  • Traffic Volume: 45.4 million vehicles (both directions)

Other Information:

Fort McHenry Tunnel History:

The [Facility Name] is eligible for inclusion in the National Register of Historic Places.  For more information about its history, follow link to learn more.

Fort McHenry Tunnel Construction and Opening Ceremonies

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Public Calendar

Jun 07

Join MDTA for its 2025 Public Service Project

9 AM

Rock Creek Park
Meadowside Nature Center
5100 Meadowside Lane
Rockville, MD 20855

Come join us for the 2025 MDTA Public Service Project at Kengla House across the street from Meadowside Nature Center at Rock Creek Regional Park! This hands-on event will give you the opportunity to make a positive impact on the community while enjoying the beauty of nature. Whether you're a seasoned volunteer or new to public service, there's a role for everyone!

Event Flyer

Saturday, June 7, 2055 (9 a.m. –– Noon) 
Rain or Shine

Volunteers will assist with:

  • Trail maintenance and improvements
  • Technical trail feature installation
  • Vegetation management
  • Pedestrian bridge entrance upgrades

SIGN UP NOW AT: BIT.LY/MDTAJUNE7

For questions about the event, please contact Jacquelyn DeAngelo at JDeAngelo@mdta.state.md.us.

 

 

 

Jun 12

Finance and Administration Committee Meeting - June 12, 2025

9 AM

Livestream

This public meeting is livestreamed and archived on the Finance and Administration Committee Meeting Homepage. The Finance and Administration Committee Meeting homepage also provides access to the virtual meeting, schedule, agenda, materials and minutes.

Jun 26

MDTA Board Meeting - June 26, 2025

9 AM

Livestream

This public meeting is livestreamed and archived on the MDTA Board Meeting Homepage. The MDTA Board Meeting homepage also provides access to the meeting schedule, materials, agenda and minutes.

 
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