Yes, there was.
In 1923 they constructed the subway approach to the MacArthur Bridge (underpass), under E. Jefferson from the Boulevard, which cost $467,000.
In 1984, the bridge underwent an $11.5 million renovation project, which was completed by 1986. They also redesigned E. Jefferson and E. Grand Blvd. That once infamous underpass/subway (or tunnel) was filled-in and removed during the renovation.
Here is a link with information:
http://www.detroittransithistory.info/AroundDetroit/BelleIsleCoachStation.html
It also shows a photo of cars leaving out of the underpass.
The address of the Belle Isle Botanical Society Bibs is: 8109 E Jefferson Ave, Detroit, MI 48214-3969
The Belle Isle Bridge or "Macarthur Bridge" as it is also known, spanned the Detroit River and was 2356 feet in total length. It was destroyed in 1915 and only the wooden pilings remain.
Belle Isle Aquarium was created in 1904.
The area of Belle Isle Park is 3,974,013.0067968 square meters.
Belle-Isle-en-Terre's population is 1,057.
The population of Belle Isle - Miami Beach - is 1,755.
The area of Belle-Isle-en-Terre is 14.11 square kilometers.
The area of Belle Isle State Park is 2,966,345.7576192003 square meters.
i lived on Belle Isle for 2 months. It's a small isle on the north side of Isle Royale National Park in Lake Superior, Michigan which is 24km from the Canadian shore
The phone number of the Belle Isle Library is: 405-843-9601.
The address of the Belle Isle Womens Committee is: , Birmingham, MI 48012-0079
There's a lot of places to hang in Detroit, but for my money the best place to hang around is Belle Isle just off the shoreline towards the Canadian border.