The Marsh Road Bridge over the Barge Canal in Bushnell's Basin will close for the day Thursday.
That's according to the State Department of Transportation, which says the closure is to allow access to the top of the truss for engineering purposes.
Weather permitting, the bridge will close at 9am and reopen by 3.
Motorists who normally use the Marsh Road Bridge over the Barge Canal should plan an alternate route.