The Contraloría de la República, the budget and contractual watchdog, has approved an agreement to widen the General Cañas highway from four to six lanes over the Río Virilla west of San José.
The agreement for the bridge job is 2.1 billion colons or about $4 million.
Work to reinforce the bridge and to improve it has been suspended pending approval of this agreement, the Ministerio de Obras Pública y Transportes said. The bridge has been declared ill designed, and there have been continual problems with the roadbed due to vibration.
The wider bridge is also part of a plan to put in a new highway to San Ramón, although this is not involved in this deal.
The highway itself is six lanes until it reaches the bridge on either side.
The minister said that 100,000 vehicles a day use the bridge.