Does anyone know the % grade one rides up when crossing the local bridges?

For instance, on the Queensboro bridge, it is listed as 130 ft high, and the approach from Queens is 984 feet, and 1182 from the Manhattan side.

assuming I am doing the calculations right (and I realize the height is less than 130 ft if accounting for the elevation at the onramps, which must be higher than sea level, I get grades of about 13% from Queens and 11% from Manhattan.

Of course, the Manhattan side climbs steeper early on...Those figures actually sound reversed - isn't the climb from Queens longer and less steep? It sure feels that way.

are there any DOT or other links to published grades for it and the other local bridges?