OK, I got back from an out of state trip yesterday and immediately called the local district IDOT employee who gave me the information and asked WHY the discrepancy between what he reported and what the DOT is reporting. Had to wait till this morning for the answer and I can believe what he said he was told this AM. ONE word, politics. The numbers he gave me were directly from the engineers that inspected the bridge and put in writing as the "safe" limits for the bridge, so my 16T RV will NOT cross that bridge under any conditions.
This is a resort area and it seems that if they loose bus service, supply services and visitors for 2 years, they think the area will dry up and blow away.
Now that I know the reason, all I will say, is believe who you want, but I put my faith in the engineers who went under the bridge and spent close to 3 weeks doing a comprehensive inspection. The state must also believe them, even though they will NOT follow their safety recommendations, as the state immediately changed the replacement date for the bridge, to commence immediately.