From Boston's Logan Airport and Points South   
When leaving the airport, take Sumner Tunnel to Route 93 North to Exit 42, Dascomb Road/Tewksbury. Turn left at the end of the ramp and then take the first right onto Frontage Road. Proceed past the Park and Ride lot and the highway entrance/exit ramps. 25 Frontage Road is the second building on the right.

From New Hampshire and Points North   
Take Route 93 South to Exit 42, Dascomb Road/Tewksbury. Turn right at the end of the ramp. 25 Frontage Road is the second building on the right.

See regional highway map

From Boston's Logan Airport and Points South   
When leaving the airport, take Sumner Tunnel to Route 93 North to Exit 45, River Road. Turn left at the traffic light at the end of the ramp. Take the first right into Woodland Park. 400 Federal Street is located approximately 1/4 mile down the road on the right.

From New Hampshire and Points North   
Take Route 93 South to Exit 45, River Road. Turn right at the end of the ramp. Take the first right after the traffic light into Woodland Park. 400 Federal Street is located approximately 1/4 mile down the road on the right.

See regional highway map