The commute across the Ottawa River won't be easy for drivers or bus passengers this afternoon. The Chaudiere Bridge is closed in both directions and could be for some time after an inspection found "deterioration in the masonry arches" according to a release from the federal department of public works. The bridge is one of the key downtown links between Ottawa and Gatineau, and its closure means more traffic will be pushed onto adjacent crossings up and down the Ottawa River. The city is waiting for formal word from the Department of Public Works, which owns the Chaudiere Bridge, on whether one lane in each direction can be opened to traffic, according to John Buck, manager of the city's traffic management office. In that case, there would be a weight limit in effect so trucks and buses would have to be rerouted, he added. Public Works is talking to the National Capital Commission to see if trucks can use the Portage Bridge nearby, which belongs to the NCC. OC Transpo bus routes 8, 88 and 105, which cross the bridge, have already been rerouted. No STO buses use the bridge but traffic tie-ups are causing delays. Buck said the lanes are unlikely to open in time for the afternoon rush hour, but police will be on hand to direct traffic. Those who use the bridges across the Ottawa River are being asked to factor extra time into their tavel plans