A significant issue has been found with the Route 133 bridge replacement project between Brookfield and Bridgewater.  The state DOT contractor says the way the bridge deck was constructed 20 years ago, causes a problem now on how to demolish it.  Engineers developed an underdeck support system to be installed this week.  The delay, which is about a month long, is to allow for engineering and adjustments to the contract costs.  The DOT expects the contractors to complete only 2 stages with weekend closures and by-passes before the Bridgewater Fair weekend. The last weekend closure may be as late as the November.