MD 24 Interchange / Two-Lane ETL Extension

As part of the Maryland Transportation Authority’s (MDTA) $1.1 billion program to relieve congestion and provide more reliable travel times along the I-95 Corridor into Harford County, the MDTA is reconstructing the interchange at I-95 and MD 24 (Vietnam Veterans Memorial Highway) to accommodate the future northbound I-95 Express Toll Lanes (ETL).

The MD 24 interchange reconfiguration requires changes to existing traffic patterns, including the removal or addition of ramps, which will result in new ways drivers access I-95, MD 24, and MD 924. The existing loop ramp from northbound MD 24 to southbound I-95 will be removed and replaced with a new ramp, which traffic will access via a left turn at a new signal-controlled intersection. The existing loop ramp from northbound I-95 to northbound MD 924 will be widened to a two-lane loop ramp for all MD 24 and MD 924 traffic. This traffic will be separated from other northbound MD 24 traffic until it crosses over I-95, at which point the ramp will be split, allowing travelers to go left to continue north on MD 24 or go right to access MD 924. Northbound MD 24 traffic coming from south of the interchange will access MD 924 via a new ramp. Southbound I-95 traffic will continue to access MD 924 via the existing ramp. MD 24 traffic will be directed to the realigned loop ramp. Other ramps will remain with realignment modifications to accommodate the ETL lanes. 
The reconstruction will affect the following ramps:
 

• Northbound I-95 off-ramp to MD 24 (Exit 77A)
• Northbound I-95 off-ramp to MD 924 (Exit 77B)
• Southbound I-95 off-ramp to MD 924 (Exit 77B)
• Southbound I-95 off-ramp to MD 24 (Exit 77A)
• MD 24 on-ramp to northbound I-95
• Northbound MD 24 on-ramp to southbound I-95
• Southbound MD 24 on-ramp to southbound I-95
   

Project Map

Traffic Advisories

Additional Project Information 

The MD 24 interchange reconfiguration requires changes to existing traffic patterns that include the removal or addition of ramps resulting in new ways drivers will access I-95, MD 24, and MD 924. The existing loop ramp from northbound MD 24 to southbound I-95 will be removed and replaced with a new ramp which traffic will access via a left turn at a new signal-controlled intersection. The existing loop ramp from northbound I-95 to northbound MD 924 will be widened to a two-lane loop ramp for all MD 24 and MD 924 traffic. This traffic will be separated from other northbound MD 24 traffic until it crosses over I-95 at which point the ramp will be split where travelers can go left to continue north to MD 24 or go right to access MD 924. Northbound MD 24 traffic coming from south of the interchange will access MD 924 via a new ramp. Southbound I-95 traffic will continue to access MD 924 via the existing ramp. MD 24 traffic will be directed to the realigned loop ramp. Other ramps will remain with realignment modifications to accommodate the ETL lanes.

Other project highlights include: 

• Roadway
  • Provide an overlay or reconstruct approximately two miles of northbound I-95 to add two northbound ETLs from south of Old Joppa Road to north of MD 24.
  • Reconstruct approximately 0.8 miles of MD 24 from Edgewood Road to MD 924/Tollgate Road.
  • Construct a new ETL ramp from northbound I-95 to MD 24.  
  • Install a new traffic signal at the intersection of MD 24 and the new ETL ramp.
• Structures
  • Reconstruct the MD 24 overpass.
  • Construct a new ETL ramp structure from I-95 to MD 24.
  • Construct a new overpass on the ramp from northbound MD 24 to MD 924.
  • Widen Winters Run Bridge to its ultimate configuration for future southbound ETL improvements (not currently funded).
  • Build ten retaining walls.
• Install new signage including dynamic message and toll information signage.
• Install new Intelligent Transportation Systems.
• Provide partial interchange lighting at traffic decision points.
• Perform drainage work and stormwater management.
• Provide landscaping.
  • Turfgrass/meadow establishment.
  • On-site reforestation.
  • Tree plantings adjacent to streams for thermal protection.
  • Landscaping at stormwater management facilities. 
     

Rendering of Reconstructed MD 24 interchange

Construction Details

Work associated with this project started in the fall of 2024. All I-95 travel lanes and traffic operations on MD 24 will be maintained during peak-traffic periods; however, some travel lanes will be closed during off-peak periods. Drivers should use caution and obey the posted speed limits within the construction zone. Sign up for email alerts about traffic advisories and notices at https://mdta.maryland.gov/I95ETLNB/home.html.

Initial construction work will involve shifting I-95 traffic in both northbound and southbound directions to the outside lanes to permit work to begin in the median areas. The off-ramp from I-95 southbound to MD 24 northbound will be realigned with temporary closures and detours in place. For traffic on MD 24, the on-ramp to I-95 southbound will be realigned with temporary closures and detours in place. All closures will be announced in advance via traffic alerts posted on the website and through social media.

Work is anticipated to be completed by fall of 2027.

Additional Information

• UPDATE: MD 24 Interchange/Two-Lane ETL Extension Factsheet – July 2025