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Baltimore Harbor Tunnel Plaza from the Air.

Baltimore Harbor Tunnel (I-895)

Baltimore Harbor Tunnel

The 1.4-mile, four-lane tunnel opened in November 1957. Designated I-895, the facility crosses under the Patapsco River and connects major north/south highways and many arterial routes in Baltimore City's industrial sections. Including the tunnel and approach roadways, the facility is approximately 18.5 miles in length.

E-ZPass Trasponder

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.

Contact Information:

  • Mailing Address:

    • Maryland Transportation Authority

      Baltimore Harbor Tunnel

      1200 Frankfurst Avenue

      Baltimore MD 21226
  • General Information:

Baltimore Harbor Tunnel Quick Facts:

  • Length of tunnel and ramp structures: 1.4 miles
  • Length of entire facility, including tunnel and approaches: 18.5 miles
  • Number of twin-tube tunnel sections: 21 (ea. approximately 300 ft.long)
  • Baltimore Harbor Tunnel Groundbreaking: April 21, 1955
  • First tunnel section was sunk: April 11, 1956
  • Number of tiles lining the Baltimore Harbor Tunnel: 6,500,000
  • When dedicated, the tunnel was the 5th longest underwater vehicular tunnel in the world
  • First person to pay the Harbor Tunnel toll: Omero C. Catan of Teaneck, NJ
  • Designer/engineer of the tunnel: Ole Singstad of Singstad and Baillie in New York
  • State of Maryland Project Manager of the Baltimore Harbor Tunnel: J.E. Greiner Company, now known as URS Corporation
  • Traffic Volume: 27.6 million vehicles (both directions)

Other Information:

Baltimore Harbor Tunnel History:

The Baltimore Harbor Tunnel is eligible for inclusion in the National Register of Historic Places.  For more information about its history, follow link to learn more.

Baltimore Harbor Tunnel (I-895)

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Public Calendar

Nov 19

Bay Bridge Run

7 AM

357 Pier 1 Rd, Stevensville, MD 21666

DriveEzMD Outreach will be at the Bay Bridge Run, one of Maryland’s most iconic events! Whether you're running, walking, or cheering from the sidelines, stop by our booth to get information about E-ZPass.

7:00 AM - 10:00AM

Nov 23

Ravens Walk

10 AM

M&T Bank Stadium
1101 Russell Street, Baltimore, MD 21230

Catch the DriveEzMD Outreach Team at Ravens Walks before the game, where you can score free giveaways, get E-Z Pass tips, and show your purple pride with fellow fans!

10:00am-1:00pm

Nov 25

MDTA Board Meeting - November 25, 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.