With funding for a new bridge likely unavailable for three years, Irwin officials are expected to discuss next month whether to rent or buy a temporary structure to replace a bridge closed in January because of a hole in the decking.
“If everything went smoothly, we’re still looking at three years until we have the bridge back,” said Steve Schmitt, borough engineer with Gibson-Thomas Engineering Co. of Latrobe. Schmitt added that such a timeline depends on a combination of funding, design, permitting and a flawless construction process.
The cost of a new bridge could range from $500,000 to $700,000, excluding engineering costs, Schmitt said. Permitting could take three to six months if the project disturbs the stream.
Council is expected to discuss the project at its workshop meeting March 3, borough manager Shari Martino said.
While the deck of the Colony Drive Bridge remains a concern, there is no problem with the bridge abutments in the stream and the beams appear to be in good condition, Schmitt told borough officials Feb. 11.
The borough closed the bridge, which spans an unnamed tributary of Tinker’s Run, after a hole in the decking was discovered Jan. 15. Borough crews had previously placed a metal plate over the hole.
Irwin could rent a bridge for about $18,000 a year, Schmitt said. To purchase a 12.5-foot-wide bridge would cost about $48,000, while a 15.5-foot-wide bridge would cost about $78,000.
Both options would be single-lane structures. The borough would need a 40-foot bridge to allow 10 feet at either end for the approaches, Schmitt said.
If the borough opts for a temporary bridge, it could take eight weeks to receive it. Used bridges also may be available and could be sold later, Schmitt noted, adding that these structures can last more than 30 years and can be moved to other sites.
Regardless of the model, a temporary bridge would have a weight limit of 15 to 18 tons, Schmitt said.
Councilman Frank Rossi said a fire truck should be able to cross the bridge.
