Cobb County may have hit another speed bump as it prepares for the opening of Suntrust Park.

A document obtained by the AJC says the 1,100-foot long pedestrian bridge spanning I-285 to the new ballpark may not be ready for Opening Day 2017. In fact, it says it may be not ready until September of that year, when most of the season is already over.

The AJC has already reported the estimated cost to build the bridge may go much higher than the current figure of $9 million.

The Atlanta Regional Commission has said the bridge and a planned circulator bus system to and from the ballpark are critical factors. Otherwise, thousands of Braves fans will try to cross busy Cobb Parkway (Hwy. 41) on game days.

An estimated 25,000 additional cars are expected to flood the area around I-75 and I-285 for sold out Braves games at Suntrust Park.

A Braves spokeswoman tells the AJC the team remains hopeful the bridge will be ready by April 2017, but the team is making contingency plans just in case.