There is indeed Duncan.
The road is called 'The Strand', and it passes right under the bridge. There's a couple of parking laybys, close to the bridge.
The road can flood when there's a very high tide.
Coming from Norwich down the A140, go right through to the A14, and head East towards Ipswich and Felixstowe.
Leave the A14 at the Wherstead Interchange, and turn left towards Ipswich. Down the hill to the roundabout, and turn right, passing the Oyster Reach pub on the right, and Fox's Marina on the left.
Just go straight on for about a half mile, and you will pass under the bridge. Parking a little way along on the left.
Dave