Bulgaria said it has opened a tender for the construction of a 31.5 km motorway section that will link the Sofia beltway with the Kalotina checkpoint on the border with Serbia.
Bids can be placed until January 7, the government's Road Infrastructure Agency said in a statement on Thursday.
Bulgaria's regional development ministry said at the end of September that the indicative value of the project is 62 million euro ($80.4 million).
The project is financed from the EU-funded operational programme Transport and the government budget.