(a) 
         The right-of-way clearance, utility, and railroad work are to be so coordinated with the physical construction that no unnecessary delay or cost for the physical construction will occur.
     
    
        
        (b) 
         All right-of-way clearance, utility, and railroad work performed separately from the contract for the physical construction of the project are to be accomplished in accordance with provisions of the following:
     
    
        
        (1) 
         23 CFR part 140, subpart I;
     
    
        
        (2) 
         23 CFR part 646, subpart B;
     
    
    
        
        (4) 
         23 CFR part 645, subpart A.
     
    
        
            Code of Federal Regulations
        
        [40 FR 17251, Apr. 18, 1975, as amended at 40 FR 25585, June 17, 1975; 64 FR 71289, Dec. 21, 1999]