MD 24 Interchange / Two-Lane ETL Extension
As part of the Maryland Transportation Authority’s (MDTA) $1.1 billion program to relieve congestion and improve travel 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).
Traffic Advisories
Work Zone Speed Camera Enforcement Begins on I-95 at MD 24
Beginning Monday, June 2, 2025, Automated Speed Enforcement (ASE) equipment will be in effect in both directions on I-95 at the MD 24 interchange (Exit 77). This equipment will be used to slow drivers in the work zones currently in place on this stretch of I-95. Advance warning signs are in place prior to the work zone to alert drivers of automated speed enforcement use and a “speed trailer” will be on-site to display drivers’ speeds.
Maryland SafeZones’ goal is to slow drivers and make work zones safer environments for work crews, drivers and passengers. Even when workers are not present, work zones can be dangerous due to uneven pavement, lane shifts, reduced shoulders and other modifications. For more information on the program, visit safezones.maryland.gov.
Long-Term Partial Ramp Closure and Detour for Southbound I-95 Traffic Traveling to Northbound MD 24
Beginning June 4 and continuing for approximately three months, the ramp from southbound I-95 to northbound MD 24 will be partially closed. The ramp will remain open to traffic to southbound MD 24. Northbound MD 24 traffic will be detoured to the off-ramp at Exit 77B and continue through the MD 924 intersection onto the on-ramp for northbound MD 24. The map below shows the detour that will be in place throughout the closure.
- Detour Map (PDF Download)
Project Highlights
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 new ETL ramp from northbound I-95 to MD 24.
- Install new traffic signal at the intersection of MD 24 and the new ETL ramp.
- Structures
- Reconstruct MD 24 overpass
- Construct new ETL ramp structure from I-95 to MD 24
- Construct new overpass on 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 storm water management
- Provide landscaping
- Turf grass/meadow establishment
- On-site reforestation
- Tree plantings adjacent to streams for thermal protection
- Landscaping at storm water management facilities
About Construction
Work associated with this project has started and is anticipated to be completed by fall of 2027. All I-95 travel lanes and all 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 and are encouraged to sign up for email alerts of traffic advisories and notices.
Initial Construction
Initial construction work will consist of 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.