from the testimony of two reputable engineers produced by some of the defendants , it appears that the land chosen by the plaintiff for the extension of rizal avenue to the municipality of caloocan is not the best or the less expensive , although upon it there may be constructed a straight road , without curves or winding ; but that in order to construct said road upon said land , the city of manila would have to remove and transfer to other places about four hundred graves and monuments , make some grubbings , undergo some leveling and build some bridges the works thereon , together with the construction of the road and the value of the lands expropriated , would mean an expenditure which will not be less than p180,000 .