IMPORTANT DIRECTIONS: 6/6/15
If you are driving east on Pennsylvania Ave, you will need to follow any closure/detour signs, and proceed up the Jackson Street off ramp. Simply proceed OVER the bridge though, as if you were returning back down the ON ramp, to proceed further east on Pennsylvania.
FOLLOW THE "LOCAL TRAFFIC ONLY" SIGNS TO REACH THE MUSEUM.
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Interstate highway 35E & Pennsylvania avenue interchange is under construction until 2015. Please allow for a few minutes extra travel time when visiting the Jackson Street Roundhouse or the MTM corporate offices.
 
Northbound exit on I-35E to Pennsylania / Phalen boulevard, just north of I-94, is now permanently closed. If you are coming from Interestate 94, exit on Marion Street, just west of I-35E / downtown St. Paul. Travel east on Marion and follow to Rice Street; at Rice Street, Marion becomes Pennsylvania Avenue; follow Pennsylvania ahead, where the roundhouse is located.
 
Southbound I-35E traffic is currently unaffected by the construction and reconfigured interchange so you may still exit onto Pennsylvania Ave.
In 2015 when the project is completed, access to the roundhouse will shift to the new Cayuga street interchange, and Pennsylvania Ave will be accessible as before.